Category: rent-control

Why Washington Landlords Miss Rent Increase Deadlines (And the Legal Cost)

It’s August 2026. You’re managing 12 residential units across the Seattle metro area. Your leases renew on January 1, and you need to decide what rent increase to propose. You do what many landlords do: call three other property owners, check what they’re charging, and increase rent by whatever “the market allows.”

Six months later, you receive a demand letter from a tenant’s attorney. The increase you imposed on January 1 was 8.2%. The 12-month CPI-U index published in September 2025 was 3.1%. Under Washington’s HB 1217, your legal ceiling was 3.1%, not 8.2%. The tenant is now claiming you owe $1,847 in wrongful rent increases, plus three times that amount in statutory damages ($5,541), plus their attorney fees ($4,200).

This scenario plays out dozens of times annually in Washington because landlords either don’t know about HB 1217’s formula or don’t know how to calculate it correctly.

HB 1217 (enacted in 2019 and effective January 1, 2019) is Washington’s statewide rent increase cap. Unlike rent control ordinances in California or New York, it doesn’t freeze rent or eliminate increases—it simply sets an annual ceiling. But that ceiling is calculated using a specific government index published on a specific date, using a specific formula that many landlords get wrong.

This guide teaches you exactly how to calculate your legal rent increase ceiling, when the CPI-U index applies, and what happens if you exceed it.

The HB 1217 Rent Increase Formula: Breaking Down the Math

Washington’s rent increase ceiling is the lower of two numbers:

1. 7 percent (the absolute ceiling), OR
2. The percentage change in the 12-month Consumer Price Index for All Urban Consumers (CPI-U)

Whichever number is smaller is your legal maximum. This is codified in RCW 59.18.140 and RCW 59.18.200.

Think of it as a floor system: CPI-U is your baseline; 7% is your hard ceiling.

Step 1: Identify the Correct CPI-U Publication Date

The September Consumer Price Index for All Urban Consumers is published by the Bureau of Labor Statistics (BLS) in the second week of October. This September index applies to rent increases that take effect January 1 of the following calendar year.

Timeline Example:

• September 2025 CPI-U index (published October 10, 2025) → applies to increases effective January 1, 2026
• September 2026 CPI-U index (published October 8, 2026) → applies to increases effective January 1, 2027

Many landlords mistakenly use the most recent CPI-U index available when they’re planning the increase, rather than the specific September index that legally applies to their lease renewal date. Using the wrong index is a violation.

Where to find the official index: The Bureau of Labor Statistics publishes the monthly CPI-U for “All items in the U.S. city average” at bls.gov/news.release/cpi.htm. The U-series (all urban consumers) is specifically required under HB 1217, not the W-series (wage earners) or other variants.

Step 2: Calculate the Year-Over-Year Percentage Change

To calculate CPI-U change, you need:

• The September CPI-U index from the current year (the one you’re using)
• The September CPI-U index from one year prior

Formula: ((Current September Index − Prior Year September Index) ÷ Prior Year September Index) × 100

Real 2026 Example:

September 2025 CPI-U (All items): 314.540
September 2024 CPI-U (All items): 319.591

Calculation: ((314.540 − 319.591) ÷ 319.591) × 100 = −1.59%

Result: The CPI-U decreased 1.59% year-over-year. Under HB 1217, this means you cannot legally increase rent at all during 2026. A negative CPI-U index means zero rent increase is permitted.

Step 3: Compare CPI-U to the 7% Ceiling and Apply the Lower Amount

Once you have your CPI-U percentage, compare it to 7% and use whichever is lower:

CPI-U Year-over-Year Change	7% Ceiling Applies?	Your Legal Increase Limit
Negative (e.g., −1.59%)	No	0% (no increase allowed)
0% to 3.5%	No	The CPI-U percentage
3.5% to 7%	No	The CPI-U percentage
7% or higher (e.g., 8.5%)	Yes	7% (the ceiling caps it)

In 2026, with a negative CPI-U, the legal limit is 0%. You cannot increase rent.

In years when CPI-U is 8% or higher (like 2022), the 7% ceiling prevents you from passing through the full inflation increase, but you still get the 7% maximum allowed.

Calculating Rent Increases in Practice: Three Real Scenarios

Scenario 1: CPI-U Below 7% (2023 Example)

Tenant lease renews January 1, 2024.
Current rent: $1,200/month
September 2023 CPI-U: 306.746
September 2022 CPI-U: 296.808

Calculation:

((306.746 − 296.808) ÷ 296.808) × 100 = 3.34%

Legal ceiling: 3.34% (lower than 7%)

Maximum new rent: $1,200 × 1.0334 = $1,240.08

You can increase rent by up to $40.08/month (3.34%). Any increase beyond this is a violation of HB 1217.

Scenario 2: CPI-U Above 7% (2022 Example)

Tenant lease renews January 1, 2023.
Current rent: $1,500/month
September 2022 CPI-U: 296.808
September 2021 CPI-U: 273.003

Calculation:

((296.808 − 273.003) ÷ 273.003) × 100 = 8.72%

Legal ceiling: 7% (lower than 8.72%)

Maximum new rent: $1,500 × 1.07 = $1,605

Even though inflation was 8.72%, the 7% cap limits your increase to $105/month. You cannot legally charge $630.60 (the 8.72% increase).

Scenario 3: Negative CPI-U (2026 Example)

Tenant lease renews January 1, 2026.
Current rent: $1,400/month
September 2025 CPI-U: 314.540
September 2024 CPI-U: 319.591

Calculation:

((314.540 − 319.591) ÷ 319.591) × 100 = −1.59%

Legal ceiling: 0% (negative CPI-U means no increase allowed)

Maximum new rent: $1,400 (no increase permitted)

If you increase rent at all on January 1, 2026, you are in violation of HB 1217.

Exemptions: Who Is NOT Subject to HB 1217?

HB 1217 applies to most residential rental properties in Washington, but three limited exemptions exist:

1. Owner-Occupied Property (Four or Fewer Units)

If you own and occupy a property with four or fewer residential units, HB 1217 does not apply to the rent increase calculation. However, you still must provide proper notice under RCW 59.18.140 before raising rent, and you are subject to other Washington landlord-tenant laws.

Example: You own a duplex and live in one unit. You can increase the other unit’s rent above the HB 1217 ceiling (or decrease it) without legal restriction. But you must still give 30-60 days’ written notice.

2. Properties Operated by Housing Authorities or Nonprofits (in Certain Programs)

Rental properties operated by public housing authorities or certain nonprofit organizations under specific federal or state subsidy programs may have different requirements, but this exemption is narrow and case-specific. Most self-managing landlords will not qualify.

3. Properties Exempt Under Local Rent Control (Rare)

Some Washington cities (notably Seattle, Tacoma, Spokane) have adopted local rent control ordinances. If your property is subject to a local ordinance that is stricter than HB 1217, the local rule applies. However, HB 1217 is the baseline statewide requirement, and most local rules are not stricter—they’re just more detailed.

Critical point: If you own 5+ units and do not fall into exemptions 1 or 2, HB 1217 applies to you. “Self-managing” does not exempt you. The property’s location does not exempt you (unless covered by local rent control, which is rare).

Notice Requirements: Timing and Legal Format

Calculating the rent increase is only half the compliance obligation. You must also provide proper notice under RCW 59.18.140.

Notice Deadline: 30-60 Days Before Effective Date

You must provide written notice of the rent increase at least 30 days but no more than 60 days before the increase takes effect. This is a hard deadline.

Increase Effective Date	Notice Must Be Delivered By	Notice Delivery Deadline
January 1, 2027	November 2 – December 2, 2026	No earlier than November 2; no later than December 2
July 1, 2027	May 2 – June 1, 2027	No earlier than May 2; no later than June 1

Notice Content Requirements

Under RCW 59.18.140(2), the notice must include:

• The amount of the rent increase
• The effective date of the increase
• The new rent amount (current rent plus increase)
• A statement that the increase complies with RCW 59.18.140 (the HB 1217 law)

Notice Format: The notice must be in writing. Email or text message is acceptable if the tenant has previously agreed to receive notices electronically (RCW 59.18.060(3)). Otherwise, you should deliver by certified mail, personal delivery, or posting on the unit door with photographic evidence of delivery date.

If you provide notice outside the 30-60 day window, the tenant has grounds to challenge the increase, and a court may invalidate it entirely or allow the tenant to claim damages.

Key Compliance Checklist: Before You Send a Rent Increase Notice

Compliance Step	Action Required	Legal Reference
1. Confirm exemption status	Verify you’re not owner-occupying a 4-or-fewer-unit property. Confirm property is not subject to local rent control (check Seattle, Tacoma, Spokane, Bellingham local codes)	RCW 59.18.200(c)
2. Locate correct CPI-U index	Download the September CPI-U (All items, U.S. city average) from bls.gov for the year prior to the increase effective date	RCW 59.18.140(2)
3. Calculate year-over-year change	Use formula: ((Current Sept Index − Prior Sept Index) ÷ Prior Sept Index) × 100. Round to nearest hundredth	RCW 59.18.140(2)
4. Compare to 7% ceiling	Take the lower of CPI-U percentage or 7%. If CPI-U is negative, the ceiling is 0%	RCW 59.18.200(a)
5. Calculate new rent amount	Multiply current rent by (1 + the increase percentage). Do not round up in your favor	RCW 59.18.200(a)
6. Schedule notice delivery	Determine 30-60 day window before increase effective date. Schedule delivery for earliest date within that window	RCW 59.18.140(2)
7. Draft notice	Include: amount of increase, effective date, new rent, and statement that increase complies with RCW 59.18.140	RCW 59.18.140(2)
8. Deliver notice	Use certified mail, email (if tenant consents), or personal delivery. Document delivery date and method	RCW 59.18.060(3)
9. Record in lease file	Store proof of notice delivery (certified mail receipt, email read receipt, photo of door posting) in tenant file for 3+ years	RCW 59.18.140

What Happens If You Violate HB 1217: Penalties and Legal Liability

Tenant Remedies

If you charge a rent increase that exceeds the HB 1217 ceiling, the tenant may sue you under RCW 59.18.140(3) for:

• Actual damages: The difference between the illegal increase and the legal ceiling, calculated from the effective date through the date of judgment. This can be substantial over multiple months
• Treble damages (3x actual damages): Washington law multiplies actual damages by three as a penalty. If you overcharged $500, the tenant can recover $1,500
• Attorney fees and court costs: The prevailing tenant recovers their full attorney fees, which typically range from $1,500–$8,000+ depending on case complexity
• Prejudgment interest: Interest accrues at the legal rate (currently 12% per annum under RCW 19.52.010) from the date of the illegal charge

Example Damage Calculation

Illegal increase: You charged $150/month increase effective January 1, 2026
Legal ceiling: 0% (no increase allowed under 2026 HB 1217)
Overcharge: $150/month × 12 months = $1,800 (through December 31, 2026)
Treble damages: $1,800 × 3 = $5,400
Attorney fees: $2,500 (conservative estimate)
Total liability: $7,900 + interest + court costs

This scenario is not hypothetical. Washington courts have enforced HB 1217 consistently, and tenant advocacy organizations actively litigate violations.

Government Enforcement and Licensing Impact

While the Washington State Department of Housing does not directly “enforce” HB 1217 through fines to landlords, systemic violations can result in:

• Violations noted in tenant complaint records that may be reviewed if you are licensed or applying for licensure
• Grounds for tenant demands for lease termination without cause (some tenants cite HB 1217 violations as wrongful lease enforcement)
• Reputational harm in professional landlord networks and property management licensing databases

The primary enforcement mechanism is private litigation by tenants or tenant advocacy groups.

Rounding and Calculation Precision: Do Not Cut Corners

CPI-U data is published to three decimal places (e.g., 314.540). Percentage changes should be calculated to at least two decimal places before rounding.

Acceptable approach: Calculate the percentage to 2-3 decimal places, then round to nearest tenth or hundredth for the increase rate. Apply that rate to the current rent.

Unacceptable approach: Rounding to a whole number percentage or “rounding up in your favor” (e.g., calculating 3.34% but charging 4%). Courts view any rounding that inflates the increase as intentional violation.

Use a calculator or spreadsheet (not mental math). Document your calculation with the source CPI-U data for your records.

Local Rent Control Ordinances: How They Interact with HB 1217

Washington cities including Seattle, Tacoma, Spokane, Bellingham, and others have enacted local rent control ordinances with varying provisions. The relationship between local rules and HB 1217 is critical:

• If local law is stricter than HB 1217, the local law applies. For example, if a city limits increases to 3% per year, you cannot use HB 1217’s 7% ceiling
• If local law is less strict or identical to HB 1217, HB 1217 applies. Most local ordinances mirror HB 1217’s formula or are stricter
• You must comply with both. You cannot ignore local law because HB 1217 is state law

Before calculating any rent increase, check your city or county’s municipal code. A quick search for “[City Name] rent increase” or “[City Name] rent control ordinance” will reveal local requirements.

Frequently Asked Questions

Q: Can I use a different CPI index (e.g., the most recent one published) instead of the specific September index?

A: No. RCW 59.18.140(2) explicitly requires the September index for the 12-month period ending in September of the prior calendar year. Using any other index violates the statute. Courts have found that landlords who use non-specified indices are in violation even if the resulting increase is lower than what HB 1217 would have permitted. Use only the official September CPI-U from BLS.

Q: What if I make a calculation error and charge too much? Can I correct it retroactively?

A: Correcting an overage retroactively by refunding the difference helps mitigate damages, but it does not prevent tenant claims. A tenant who overpaid can still sue for treble damages. However, if you discover an error and immediately refund the overage plus interest before the tenant sues, you may reduce your liability. Consult an attorney before attempting to correct an overage, as the communication itself can be used as evidence of knowing violation.

Q: If my lease has a clause allowing “rent increases up to 7% per year,” am I compliant?

A: No. A lease clause does not override HB 1217. Even if the lease says you can increase rent up to 7%, you are still bound by the lower of 7% or the actual CPI-U. If CPI-U is 2%, you cannot charge 7%. Lease clauses that contradict HB 1217 are void. Courts will enforce the statutory limit, not the contract term.

Q: Does HB 1217 apply if the tenant has signed a new lease with a new rent amount (rather than an increase notice)?

A: Yes. HB 1217 applies to any change in rent, whether it’s described as an “increase,” incorporated into a new lease, or framed as a “re-negotiation.” If the new rent exceeds the legal ceiling compared to the prior rent, the new lease is unenforceable to the extent it violates the ceiling. A tenant can challenge the lease term as void.

Q: I own a 4-unit property and occupy one unit. Can I increase the other three units’ rent above HB 1217 limits?

A: Yes, because owner-occupied 4-or-fewer-unit properties are exempt from HB 1217 rent increase limits. However, you must still provide 30-60 days’ written notice before the increase takes effect, and you must comply with all other Washington landlord-tenant laws (maintenance, habitability, security deposit rules, etc.).

Automating Compliance: Using Tools to Avoid Miscalculation

Many self-managing landlords use spreadsheets or property management software to track rent increases and notice deadlines. The compliance value of automation is significant: you eliminate the risk of miscalculating the CPI-U percentage or missing the 30-60 day notice window.

LeaseBase’s compliance engine automatically pulls the current BLS CPI-U data, calculates your legal rent increase ceiling based on your property location and unit count, and alerts you to notice delivery deadlines. This reduces your exposure to calculation errors and timing violations.

If you manage 2-75 units across Washington and are currently using spreadsheets or trying to track CPI-U manually, consider whether the time and error risk are worth the DIY approach. A single lawsuit from a miscalculated rent increase can cost $7,000–$15,000+ in damages and legal fees—far exceeding the cost of compliance software for a year.

More information about compliance tracking and automation is available in the LeaseBase platform guide.

Disclaimer

This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your situation. Washington landlord-tenant law is complex, and circumstances vary by property location, lease type, and tenant status. The calculations and deadlines described in this guide are accurate as of August 2026 but may change if Washington law is amended. Always verify current CPI-U data directly from the Bureau of Labor Statistics before calculating a rent increase, and review local municipal code if your property is in a city with rent control ordinances.

What Is Oregon’s Rent Increase Cap and When Did It Start?

In June 2019, Oregon became the first state in the nation to impose a statewide rent increase cap. Senate Bill 608 (SB 608), codified in Oregon Revised Statutes § 90.323, took effect on January 1, 2020, and fundamentally changed how landlords can raise rent in Oregon.

The law caps annual rent increases at 7% plus the Consumer Price Index. This is not a simple 7% cap—it is a 7% floor plus an inflation adjustment. The CPI used is specifically the “consumer price index for all urban consumers for the Portland-Seattle-Tacoma region” published by the U.S. Bureau of Labor Statistics.

Here’s what this means in practical terms: if CPI for the prior 12 months was 3.2%, your allowable increase is 7% + 3.2% = 10.2%. If CPI was negative (deflation), your allowable increase is still 7% plus that negative number. The cap applies to month-to-month tenancies and lease renewals for all rental units in Oregon.

As of August 2026, landlords continue to operate under this cap. The 2026-2027 allowable increase (effective July 1, 2026) was calculated based on 12-month CPI data through June 2026. This is not optional compliance—it is mandatory for every residential landlord in Oregon managing 2 or more units, and for owner-occupants in certain situations.

How to Calculate Your Legal Rent Increase

The calculation is straightforward but requires you to use the correct CPI figure published at the correct time. Here is the step-by-step process:

Step 1: Identify the Applicable CPI Figure

Oregon law requires use of the Consumer Price Index for all urban consumers (CPI-U), “West region” series, published by the U.S. Bureau of Labor Statistics. The relevant CPI figure is the one published in June of the year your increase takes effect, which reflects the 12-month change ending in May.

For example, if you are raising rent effective July 1, 2026, you use the CPI figure published in June 2026. This data is publicly available at bls.gov and is also published by the Oregon State Bar and landlord associations for ease of reference.

Step 2: Add 7% to the CPI Figure

Take the CPI percentage and add 7 percentage points. If June 2026 CPI-U (West) was 3.1%, your calculation is:

7% + 3.1% = 10.1% maximum allowable increase

Step 3: Apply to Current Rent and Round

Multiply the current rent by the allowable percentage increase. If a tenant is paying $1,500/month and the allowable increase is 10.1%, the new rent is:

$1,500 × 1.101 = $1,651.50 (round to $1,651 or $1,652)

Oregon law allows you to round to the nearest dollar. Courts have held that rounding up slightly is not a violation of the statute, as long as the rounded amount does not exceed the mathematically calculated amount by more than 50 cents.

Step 4: Do Not Exceed the Cap

If you calculate a 10.1% increase is allowable but you want to raise rent less, that is permitted. You cannot raise rent more than the cap. If you propose $1,700 on a $1,500 base rent (13.3% increase), you have violated ORS 90.323 even if your calculation was wrong—the statute is strict liability.

Common Mistake: Some landlords believe they can “bank” unused increases. For instance, if you only raised rent 5% last year when 9% was allowed, you cannot raise rent 13% this year. Each year’s cap is independent. Any increase you do not use is forfeited.

Notice Requirements: The 90-Day Rule

A rent increase, even if it is within the legal cap, is not valid unless you provide proper written notice. Oregon law is extremely strict about this requirement.

Minimum Notice Period

You must deliver written notice to the tenant at least 90 days before the date the increase takes effect. This is codified in ORS 90.323(2). The 90 days is measured from the date the tenant actually receives the notice, not from when you send it.

If you email notice on April 1 and the tenant reads it on April 2, you cannot raise rent effective July 1 (90 days from April 2 is July 1, but you need it to arrive before that). Safest practice: mail or hand-deliver notice at least 95 days before the effective date.

Content of the Notice

The notice must include:

• The amount of the new rent
• The date the increase takes effect
• A statement that the increase does not exceed the legal cap under ORS 90.323
• The calculation showing how you arrived at the increase amount (e.g., “Current rent $1,500 × 10.1% increase = $1,651”)
• A statement of the tenant’s right to terminate the lease without penalty if they do not accept the increase (see below)

Oregon courts have invalidated rent increase notices missing required content. The notice must be in writing—oral notice is ineffective. Email is acceptable if you can prove delivery, but certified mail or hand delivery creates a clear proof trail.

Tenant Right to Terminate

Under ORS 90.323(3), if you raise rent more than 5% in a 12-month period, the tenant has the right to terminate their lease without penalty and without providing additional notice. They do not even need to provide 30 days’ notice—they can simply leave. This right terminates 30 days after they receive the notice.

This means if you raise rent 10% and send proper notice 90 days in advance, the tenant can terminate the lease anytime within 30 days of receiving that notice and move out without liability. You must include a clear statement of this right in your notice.

Practical Impact: Landlords who raise rent by more than 5% should expect tenant turnover. Budget for vacancy, turnover costs, and new tenant screening. If your goal is stable, long-term tenancy, increases above 5% are economically risky.

Exemptions: When the Cap Does Not Apply

The 7% + CPI cap applies to most residential rentals in Oregon, but certain properties and situations are exempt. Understanding these exemptions is critical—if your property qualifies for an exemption, you can raise rent by any amount (within Oregon’s other limits, like prohibition on retaliatory increases).

New Construction Exemption (15-Year Period)

Properties that have not been rented or leased for occupancy before January 1, 2020, are exempt from the rent increase cap for the first 15 years of occupancy. ORS 90.323(4)(a).

This exemption is intended to encourage new construction by allowing market-rate pricing during the initial rental period. Once a building reaches 15 years old (January 1, 2035, for a building first rented in 2020), the cap applies going forward.

Important Clarification: This exemption applies to the building as a whole, not individual units. If one unit in a multi-unit building was rented before 2020, the entire building loses the exemption. Verify rental history carefully before claiming this exemption.

Owner-Occupied Duplex Exemption

A landlord who owns and occupies a duplex (one half) and rents the other half is exempt from the rent increase cap for that rental unit. ORS 90.323(4)(b).

The exemption requires actual occupancy by the owner. If you own a duplex, live in unit A, and rent unit B, you can raise rent on unit B without limitation. However, if you move out or rent both units, the exemption no longer applies.

Subsidized Housing and Low-Income Programs

Housing subsidized by federal, state, or local governments (such as Section 8, public housing, or low-income tax credit properties) may have exemptions or different rules under the programs that subsidize them. ORS 90.323(4)(c) defers to federal and state subsidy program rules.

Verify with your subsidy program administrator whether the 7% + CPI cap applies or whether program rules override state law.

Manufactured Dwelling Parks: Different Rules

Manufactured dwelling parks (mobile home parks) in Oregon have their own rent increase rules under ORS 90.505. The cap is generally the same (7% + CPI), but notice requirements differ slightly. Consult those statutes if you own a manufactured dwelling park.

Common Compliance Mistakes and Penalties

Violations of ORS 90.323 carry serious financial consequences. Courts treat rent increase violations as intentional breaches triggering statutory damages, not innocent mistakes.

Mistake #1: Calculating or Applying the Wrong CPI

Some landlords use the wrong CPI series (e.g., national instead of West region) or use stale data. If you calculate a 9% increase but the cap is 8%, you have violated the law. The tenant did not have to sign a new lease; the law adjusts it automatically.

Penalty: Actual damages (the overcharge) plus civil penalties of up to $200 per day, attorney fees, and costs. On a $1,500/month overage, a 3-month violation could result in $1,500 in overcharges plus $18,000 in statutory penalties ($200/day × 90 days) plus attorney fees. Total liability: $19,500+.

Mistake #2: Failing to Provide 90-Day Notice

If you provide 60 days’ notice instead of 90, the increase is void. The tenant can refuse to pay the higher amount, and you cannot evict for non-payment of an unlawful increase.

Penalty: The increase is invalid, tenant owes only the prior rent amount, and you may face damages and attorney fees if the tenant sues.

Mistake #3: Not Including Required Statements in Notice

Oregon courts have voided rent increases when the notice failed to include a calculation showing the increase was within the legal cap or when it failed to inform the tenant of their termination right.

Penalty: The increase may be unenforceable; tenant can withhold the increase amount and you cannot evict.

Mistake #4: Retaliatory Increases

Even if you stay within the 7% + CPI cap, raising rent within 6 months of a tenant exercising a legal right (like requesting repairs, calling code enforcement, or joining a tenant organization) is presumed retaliatory under ORS 90.385. The burden shifts to you to prove the increase was not retaliatory.

Penalty: Damages, attorney fees, and the increase may be voided.

Mistake #5: Compound Increases Within a 12-Month Period

Raising rent twice in one year (e.g., $1,500 → $1,575 in month 3, then $1,575 → $1,650 in month 9) is lawful only if both increases combined do not exceed 7% + CPI. If the combined increases exceed the cap, the second increase violates the law.

Penalty: The second increase is void; statutory damages and overcharge recovery apply.

Enforcement and Penalties: What Happens If You Violate ORS 90.323

Oregon law provides multiple enforcement mechanisms, and tenants have strong incentives to challenge unlawful increases.

Civil Action by the Tenant

A tenant can sue under ORS 90.323(5) for:

• Actual damages (the overcharge amount)
• Statutory civil penalties of up to $200 per day of violation
• Attorney fees and court costs
• In cases of willful violations, punitive damages

The tenant does not need to prove harm—the violation itself triggers statutory damages. If you overcharge $50/month for 12 months ($600 total) and get sued, you could owe $600 in actual damages plus up to $2,400 in statutory penalties (assuming $200/day × 12 days the case was active in court) plus attorney fees potentially exceeding $2,000. Total exposure: $5,000+.

Defense Available: Good Faith Error

Oregon law provides a narrow defense if you made a genuine, documented good faith error in calculating CPI or in applying the increase. The defense requires:

• You consulted a reliable source for CPI (e.g., the Oregon State Bar or BLS website)
• You applied the calculation consistently
• You corrected the error as soon as you discovered it
• You refunded the overcharge to the tenant

This defense does not apply if you failed to provide proper notice. If notice was deficient, no defense is available.

Agency Enforcement

While Oregon does not have a dedicated rent control enforcement agency, the Oregon Bureau of Labor and Industries (BOLI) can investigate complaints, and the Attorney General’s office can bring enforcement actions in public interest. Additionally, local jurisdictions (Portland, Eugene, Salem) may have additional rent control or rental housing provisions that layer on top of state law.

Documenting Compliance: What to Keep on File

To defend yourself if a tenant challenges an increase, maintain detailed records:

Compliance Checklist for Each Rent Increase

• CPI Source Document — Print or screenshot the official BLS or Oregon State Bar CPI figure used in your calculation, dated and labeled
• Calculation Worksheet — Show the math: prior rent × (1 + [0.07 + CPI%]) = new rent. Include rounding explanation if applicable
• Notice of Increase Letter — Signed copy of the notice sent to tenant, including all required statements
• Proof of Delivery — Certified mail receipt, email read receipt, or signed acknowledgment by tenant
• Delivery Date Documentation — Calendar or letter header showing the 90-day lead time before effective date
• Lease Amendment or Lease Renewal — Copy of any lease document reflecting the new rent amount, signed by both parties
• Tenant Acceptance Confirmation — If the tenant began paying the new rent, that is acceptance; keep rent payment records showing the new amount was paid

Store these documents in a centralized lease file for at least 6 years. If a tenant sues or threatens suit, you can quickly produce evidence showing your compliance.

Interaction With Other Oregon Rent Control Laws

ORS 90.323 is Oregon’s primary rent cap statute, but other laws may apply concurrently:

Local Rent Control Ordinances

Portland, Gresham, and some other jurisdictions have enacted local rent control ordinances that may impose stricter caps or longer notice periods than state law. Local rules take precedence. If you own property in Portland, apply Portland’s local rules first; if they conflict with state law, the stricter rule applies.

Retaliatory Rent Increases (ORS 90.385)

Raising rent within 6 months of a tenant requesting repairs, filing a complaint with code enforcement, or organizing a tenant union is presumed retaliatory. Even if the increase is within the 7% + CPI cap, the increase may still be illegal if retaliatory intent is shown.

Essential Services (ORS 90.320)

If your property fails to provide essential services (heat, water, electricity, habitability), the tenant may withhold rent. You cannot raise rent while your property is non-compliant with habitability standards.

Frequently Asked Questions

Q: If I own rental property in Oregon but live out of state, does the 7% + CPI cap apply to me?

A: Yes. ORS 90.323 applies to all residential rental properties in Oregon, regardless of where the landlord resides. If your property is located in Oregon and is rented to tenants, you must comply with the cap. Oregon courts have jurisdiction over non-resident landlords and will enforce the law against them.

Q: Can I raise rent if my mortgage, property taxes, or insurance increased more than the legal cap?

A: No. The law does not provide exceptions for increased operating costs. You must comply with the 7% + CPI cap regardless of your expenses. (This is one reason landlords oppose rent control laws, but it is the law you must follow.) Plan your rental pricing to account for cost increases within the cap.

Q: The tenant moved out mid-lease. Can I raise rent on the next tenant without waiting 12 months?

A: Yes. The 12-month cap resets when a new tenant moves in. However, the notice requirement (90 days for rent increases over 5%) applies to the new tenant. You must send written notice 90 days before the new rent takes effect. If you want the new rent to apply from the first day of tenancy (day 1 of their lease), you must disclose it in the lease they sign—this is not a “rent increase” in the legal sense but rather the initial lease term rent.

Q: I calculated the increase and gave 90 days’ notice, but I used the wrong CPI figure (national instead of West region). Is the increase void?

A: Likely yes. Oregon courts interpret ORS 90.323 strictly. Using the wrong CPI series means your calculated cap was incorrect, and the increase you applied likely exceeded the true lawful cap. This is a violation, and the tenant can sue to recover the overcharge plus statutory penalties. Immediately recalculate using the correct CPI, determine the overcharge, and refund the tenant before they sue.

Q: Can I avoid the rent cap by converting to month-to-month and then raising rent?

A: No. The cap applies to month-to-month tenancies and to lease renewals. It makes no difference whether you give formal notice of a rent increase or attempt to end the month-to-month tenancy and re-rent at a higher rate—the cap applies either way. Oregon courts have closed this loophole.

Best Practices for Rent Increase Compliance

Use this checklist every time you raise rent:

Action	Timeline	Compliance Requirement
Research Current CPI	6 months before increase	Use BLS.gov or Oregon State Bar published figure; verify you are using West region CPI-U series
Calculate Allowable Increase	6 months before increase	7% + (current CPI%) = cap; do not exceed this percentage
Prepare Notice Letter	5 months before increase	Include new rent amount, effective date, calculation, cap compliance statement, and termination right statement
Deliver Notice	At least 95 days before increase effective date	Use certified mail or hand delivery; obtain proof of delivery; email acceptable if read receipt obtained
Document Delivery	Immediately upon sending	File proof of delivery, letter, CPI calculation, and all supporting documents
If Lease Renewal Occurs	Before new lease begins	Ensure new lease document reflects the increased rent; obtain tenant signature; keep signed copy
Monitor Compliance for 12 Months	After increase takes effect	Do not raise rent again within 12 months unless the combined increases stay within cap; retain all payment records

Technology Tools for Compliance Tracking

Managing rent increases manually across multiple units is error-prone. Consider using a compliance management platform that:

• Stores and auto-updates current CPI data
• Calculates the allowable increase for each unit based on local rules
• Generates compliant notice letters with all required statements
• Tracks 90-day delivery deadlines and alerts you before they pass
• Maintains a searchable archive of all rent increase documentation per unit
• Flags potential retaliatory rent increases based on maintenance request dates

A platform like LeaseBase’s lease operations module reduces compliance errors and creates defensible audit trails. For landlords managing 2-75 units, the cost of a compliance tool ($50–200/month) is negligible compared to the cost of a single rent increase violation ($5,000–20,000).

Additionally, rent payment tracking ensures you have clear records of when rent was paid and at what amount, which is critical evidence if a dispute arises.

Recent Changes and 2026 Updates

As of August 2026, Oregon’s 7% + CPI cap remains in force with no pending legislative changes. However, monitor the following:

• Portland and Local Ordinances: Portland and other Oregon cities have proposed stricter local caps. Check your city’s current rent control rules; they may exceed state minimums.
• CPI Adjustments: CPI fluctuates annually. The allowable increase percentage changes every July 1. Stay informed of the June CPI release each year to know the upcoming year’s cap.
• Eviction Moratorium Remnants: Some pandemic-era tenant protections have expired, but new protections may emerge; verify current law before issuing any notice to quit or pay rent.

Conclusion: Compliance as a Competitive Advantage

Oregon’s 7% + CPI rent increase cap is one of the nation’s most prescriptive rent control laws. For self-managing landlords, compliance requires precision: the correct CPI figure, proper calculation, timely written notice with specific language, and meticulous record-keeping.

The cost of non-compliance is high—$200/day in statutory penalties alone, plus overcharge refunds and attorney fees. The cost of compliance is low: one hour per year to research CPI, calculate the allowable increase, and send a letter.

Landlords who master this statute build trust with tenants, avoid costly litigation, and maintain defensible practices. Those who cut corners or guess at calculations face liability that erodes rental income and forces sale of properties at distressed prices.

Start by pulling last year’s rent increase documentation (if any) and verifying that your calculation and notice met these requirements. If errors exist, consult an Oregon landlord-tenant attorney about correction procedures—voluntary refunds and corrected notices often prevent litigation.

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Disclaimer: This article is for informational purposes only and does not constitute legal advice. Consult a qualified Oregon attorney licensed to practice in your jurisdiction for guidance specific to your situation.

What Is Evanston’s Rent Stabilization Ordinance?

In February 2020, Evanston, Illinois passed one of the Midwest’s most restrictive rent control measures. The Evanston Rent Stabilization Ordinance (Evanston City Code Chapter 5-3) caps annual rent increases and mandates just-cause eviction standards for most residential properties in the city.

This ordinance applies to nearly all rental housing in Evanston, regardless of property size or age—with narrow exemptions. For self-managing landlords operating 2-75 units in Evanston, compliance is non-negotiable. Violations carry daily fines, tenant lawsuits, and potential license suspension for property managers.

Unlike most Illinois rent control laws (which apply only to specific cities like Chicago), Evanston’s ordinance is enforced aggressively by the city’s Department of Community Development and through private tenant lawsuits under the implied warranty of habitability doctrine.

Who Must Comply: Covered Properties and Exemptions

Evanston’s rent stabilization ordinance covers nearly every residential rental unit in the city. Understanding the narrow exemptions is critical—claiming an exemption you don’t qualify for can result in treble damages and attorney fees under § 5-3-12.

Properties Subject to Rent Stabilization

The following are subject to the rent cap and just-cause eviction requirements:

• All rental units in buildings with 1 or more units
• Single-family homes (if rented, not owner-occupied)
• Condominiums held for investment
• Units rented furnished or unfurnished
• Subsidized or public housing administered by private entities
• Mobile home parks and manufactured housing communities

Narrow Exemptions (Effective Before February 2, 2020)

The ordinance contains a “new construction” exemption, but it is sharply limited:

• New construction completed after February 2, 2020 — exempt from rent caps for 15 years if they contain 5+ units and meet affordability requirements (at least 10% affordable units at 60% AMI for 15 years)
• Owner-occupied buildings with 1-2 units — where the owner lives in one unit; however, if you rent out both units or move out, the exemption is lost
• Transitional housing — licensed by the state and operated by nonprofits for homeless populations (limited to 60 days)

Critical note: The new construction exemption expires on February 2, 2035. After that date, no Evanston property will be exempt from rent stabilization unless the city amends the ordinance.

Do not assume exemptions apply to your property without written confirmation from Evanston’s Department of Community Development. Claiming a false exemption and charging above-cap rent constitutes an unfair practice under § 5-3-1 and is subject to civil penalties.

The 5% Rent Cap Formula and Annual Increases

Evanston’s rent increase cap is straightforward but requires annual calculation. Under § 5-3-6, the maximum annual rent increase is the lesser of:

• 5%, OR
• The Consumer Price Index (CPI) for the Midwest Region (Urban Wage Earners, Series ID CPIAUCSL) plus 1.5%

The city recalculates the allowable increase each January 1, based on the prior year’s CPI data released by the U.S. Bureau of Labor Statistics in December.

2026 Rent Increase Cap (Effective January 1, 2026)

For 2026, the allowable rent increase is 4.0% (the lesser of 5% or 2024 CPI + 1.5%). This applies to all rent increases that take effect on or after January 1, 2026.

For increases effective in 2027 and beyond, wait for Evanston’s annual notice, typically published December 31 on the city’s website. Do not rely on national CPI figures—Evanston requires the Midwest Urban series specifically.

How to Calculate Allowable Rent Increases

Step 1: Identify the current rent and lease term. If the tenant is on a month-to-month lease, the cap applies to each renewal period.

Step 2: Apply the city’s annual allowable increase percentage (4.0% for 2026).

Step 3: Calculate the new rent: Current Rent × (1 + Cap Percentage) = New Rent

Example: A tenant pays $1,500/month. For 2026, the allowable increase is 4.0%. New rent = $1,500 × 1.04 = $1,560.

Step 4: Send the rent increase notice at least 60 days before the effective date (see Notice Requirements section below).

What Counts as “Rent” Under the Ordinance?

The ordinance defines “rent” broadly under § 5-3-2 to include all fees and charges tenants must pay to occupy the unit, except:

• Utilities the tenant pays directly to the utility provider (not billed by landlord)
• Parking fees, if offered as optional and separately metered
• Pet deposits (not pet rent or pet fees)
• Court-ordered child support or alimony taken from rent

This means the following are subject to the 5% cap:

• Base monthly rent
• Tenant-paid utilities (if billed by landlord, e.g., “master-metered” water)
• Pet rent or pet fees
• Parking fees (if mandatory)
• Trash/recycling fees
• Amenity fees (gym, pool)
• Application or lease renewal fees

Increasing these fees above the cap to offset the rent freeze is prohibited and constitutes a violation of § 5-3-6.

60-Day Notice Requirement and Notice Compliance

Any rent increase, even one within the 5% cap, requires advance written notice. Under § 5-3-6(c), landlords must provide 60 calendar days’ written notice before the increase takes effect.

What the Notice Must Include

The notice must contain all of the following information, or it is void and the increase cannot be enforced:

• Current rent amount
• New rent amount
• Effective date of increase (must be at least 60 days after notice delivery)
• Reason for increase (if any)
• Tenant’s right to challenge the increase if it exceeds the cap
• Contact information for Evanston’s Department of Community Development for disputes

The notice should also include clear language stating that rent increases exceeding the city’s allowable cap are unenforceable and that the tenant has the right to file a complaint with the city.

How to Deliver the Notice

§ 5-3-6(c) requires “written notice” but does not specify delivery method. Evanston courts and the city interpret this to mean:

• Hand delivery to tenant (with written receipt)
• Certified mail, return receipt requested
• Email (if tenant consents to electronic service in the lease)
• Personal delivery to an adult occupant of the unit
• Posting on the unit’s door, plus regular mail (if tenant refuses other methods)

Use certified mail for high-value properties or tenants who may dispute the increase. Document the delivery method and keep a copy of the notice and proof of service in your files.

Timing Pitfalls and Deadlines

The 60-day notice period is strict and not subject to waiver or estoppel. Courts have held that a 59-day notice does not comply, even if the tenant doesn’t object.

Count the 60 days correctly:

• Day 1 = date notice is delivered (if hand-delivered) or the date shown on the certified mail receipt
• Day 60 = the earliest the increase can be effective
• Do not count the day of delivery

Example timeline: If you deliver notice on August 1, 2026, the earliest the rent increase can be effective is October 1, 2026 (61 days later, counting September 30).

For month-to-month leases, the increase is effective on the first day of a rental period (usually the 1st of the month). Align your 60-day notice to account for this.

Just-Cause Eviction Requirements

Evanston’s ordinance eliminates “no-fault” evictions. Under § 5-3-7, landlords can only terminate a tenancy for specific, documented causes. This is one of the most consequential provisions in the ordinance and the source of most landlord-tenant disputes.

Permitted Reasons for Eviction (Just Cause)

You may terminate a tenancy only if one of the following applies:

Just Cause Category	Definition and Requirements
Non-Payment of Rent	Rent is 5+ days late. You must provide written notice giving tenant 5 days to cure before filing for eviction. After 5-day notice, tenant has additional 5 days after notice expires to pay (10 days total grace).
Lease Violation	Tenant materially breaches a provision of the lease (e.g., unauthorized occupants, pet policy violation, use of unit for illegal activity). Provide written 14-day cure notice specifying the violation.
Illegal Activity	Tenant engages in illegal activity in the unit or on the property (drug manufacturing, violent felony). No cure notice required; immediate notice to quit may be issued.
End of Lease Term	Lease expires and landlord does not renew (for any reason). Not a “no-fault” eviction; landlord must provide 30-day notice of non-renewal, separate from the lease expiration date.
Owner Move-In	Landlord or immediate family member (spouse, children, parents, grandparents) genuinely intends to occupy the unit as primary residence within 6 months. Must provide 60-day notice and pay relocation assistance (see § 5-3-7(d)).
Substantial Rehabilitation	Property requires renovation that would be unsafe for occupancy and is estimated to cost 10%+ of property value. Provide 90-day notice and relocation assistance.
Demolition	Property is to be demolished. Provide 90-day notice, relocation assistance, and proof of demolition approval.

Critical limitation: Owner move-in and substantial rehabilitation are subject to abuse prevention. If a tenant files a domestic violence or sexual assault report (or the tenant is protected by an order of protection), the landlord cannot evict for owner move-in or rehab for 1 year.

Prohibited Retaliatory Actions (Retaliation Rules)

§ 5-3-7(c) makes retaliation illegal. Landlords cannot:

• Raise rent (or serve a rent increase notice) within 12 months after a tenant files a complaint with the city, participates in a tenant organization, or requests repairs
• Decrease services or amenities as punishment for a tenant complaint
• Serve a notice to quit or eviction notice within 12 months after protected activity
• Charge additional fees or change lease terms to discourage complaints
• Threaten eviction or rent increases in response to tenant organizing or legal action

The 12-month protection is measured from the date of the tenant’s protected action, not from when the complaint is resolved.

Tenant complaints that trigger retaliation protection:

• Contacting Evanston’s Department of Community Development about rent stabilization violations
• Requesting repairs for habitability defects (broken heating, mold, vermin)
• Reporting building code violations to the city
• Joining or organizing with a tenant union
• Requesting written explanation of rent increase
• Filing or threatened legal action against landlord

If a tenant makes a complaint and you raise rent within 12 months, the burden shifts to you to prove the rent increase was justified by legitimate business reasons (e.g., documented capital improvements, significant tax increase). This is a steep burden—courts assume retaliation if the timeline is suspect.

Rent Increase Notice and City Registration Requirements

Evanston requires landlords to register rent increases with the city. While the ordinance does not explicitly state a registration deadline, the city’s Department of Community Development monitors compliance through property records and tenant complaints.

Filing Rent Increase Notices with the City

Landlords are expected to file a copy of any rent increase notice with Evanston’s Department of Community Development. The city does not charge a fee, but the filing is mandatory for compliance verification.

Where to file:

• Evanston Department of Community Development
• 2100 Ridge Avenue, Evanston, IL 60201
• Email: rentstabilization@cityofevanston.org (or check the city’s current website for updated contact)

File the rent increase notice within 10 days of serving it on the tenant. Include:

• Tenant name and property address
• Current rent and new rent amount
• Percentage increase
• Effective date
• Proof of service to tenant (copy of certified mail receipt or hand delivery signature)

The city uses these filings to audit compliance and to respond to tenant complaints. Failure to file does not invalidate the notice, but it may trigger an audit or complaint investigation.

Penalties for Non-Compliance

Evanston aggressively enforces the rent stabilization ordinance. Penalties are substantial and escalate with repeated violations.

Civil Penalties Under § 5-3-12

• First violation — up to $500 per day per unit or per violation
• Subsequent violations — up to $1,000 per day per unit
• Willful violations — up to $1,500 per day per unit and possible license suspension

These penalties accrue daily, meaning a single rent overcharge on one unit can cost thousands per month if not quickly corrected.

Tenant Private Right of Action

§ 5-3-12(b) gives tenants the right to sue for violations. Tenants can recover:

• All overcharged rent (the difference between the rent paid and the lawful rent under the cap)
• Treble damages (3 times the overcharge)
• Attorney fees and court costs
• Pre-judgment and post-judgment interest

Example: A tenant pays $100/month above the lawful rent cap for 12 months ($1,200 total). The tenant can sue for $3,600 in treble damages, plus attorney fees (often $3,000-$8,000), plus interest. Total exposure: $6,600-$11,600+ on a single tenant dispute.

Tenants do not need to exhaust administrative remedies; they can file a lawsuit directly in circuit court.

Retaliatory Action Penalties

Retaliation violations under § 5-3-7(c) carry enhanced penalties:

• Civil fine of up to $1,000 per violation
• Treble damages for any financial harm to tenant
• Injunctive relief (court order forcing landlord to reverse illegal action)
• Possible criminal charges for willful retaliation (misdemeanor, up to 30 days jail)

Courts presume retaliation if a rent increase or eviction notice is issued within 12 months of a tenant’s protected activity. You must prove legitimate, non-retaliatory reasons for the action.

Compliance Checklist for Evanston Landlords

Annual Rent Increase Compliance Checklist

• ☐ Check Evanston’s official website (cityofevanston.org) for the annual allowable rent increase cap (published December 31 for January 1 effective date)
• ☐ Calculate the new rent for each unit using the lesser of 5% or CPI + 1.5%
• ☐ Prepare written rent increase notice, including:
• Current rent and new rent amounts
• Percentage increase
• Effective date (minimum 60 days after notice delivery)
• Tenant rights and complaint procedure
• ☐ Deliver the notice via certified mail or hand delivery at least 60 days before effective date
• ☐ Keep copy of notice and proof of delivery (signed receipt or certified mail stub)
• ☐ File copy of notice with Evanston Department of Community Development within 10 days
• ☐ Document in your files the justification for any above-cap charges (utilities, amenities, etc.)
• ☐ Do not bundle other fee increases (parking, pets, trash) into the rent increase
• ☐ Verify tenant has not filed complaint or initiated legal action in past 12 months (retaliation check)

Just-Cause Eviction Compliance Checklist

• ☐ Identify the specific just cause for termination (rent non-payment, lease violation, etc.)
• ☐ Provide written cure notice (if applicable):
• 5 days for non-payment of rent
• 14 days for lease violations
• No notice required for illegal activity
• ☐ Wait for cure period to expire before filing eviction
• ☐ Document the reason for eviction (tenant files, communication records, lease terms violated)
• ☐ Check for retaliation triggers: has tenant complained to city, requested repairs, or organized with other tenants in past 12 months?
• ☐ For owner move-in or rehab evictions, provide 60-90 day notice as required
• ☐ Calculate and set aside relocation assistance (if applicable):
• Owner move-in: 2 months’ rent
• Substantial rehab or demolition: 3 months’ rent
• ☐ File eviction lawsuit in Cook County Circuit Court (Evanston is in Cook County)
• ☐ Serve tenant with summons and complaint per Illinois civil procedure rules
• ☐ Attend court hearing and present evidence of just cause and compliance with notice requirements

FAQ: Evanston Rent Stabilization Ordinance

Q: If I own an owner-occupied 2-unit building and rent out one unit, is the tenant unit covered by rent stabilization?

A: No, but only if you occupy the other unit as your primary residence and have done so continuously. The owner-occupancy exemption requires genuine, current owner-occupancy. If you move out, sell the property, or rent out both units, the exemption is lost and all units become subject to the rent cap and just-cause requirements. Document your primary residence status (utility bills, voter registration, property tax homeowner exemption) if you claim this exemption.

Q: Can I raise rent above the 5% cap if I’m adding a new amenity or making capital improvements?

A: No. Under Evanston’s ordinance, all charges for occupancy—including charges for amenities—are subject to the 5% cap. You cannot pass through improvements, repairs, or amenity upgrades as separate charges above the cap. If you add a parking space or pet amenity, the total rent (base + amenity) cannot exceed the capped amount. The only exception is if the tenant voluntarily opts into a new, optional service (e.g., premium cable) that was not part of the lease and is separately metered.

Q: A tenant filed a complaint with the city about mold in August 2025. Can I raise their rent in September 2025?

A: No. Under the 12-month retaliation protection, you cannot raise rent within 12 months after the August 2025 complaint, so the earliest you could raise rent is August 2026. Even if the rent increase is within the 5% cap and you have a legitimate reason for it, courts presume retaliation if the timing is suspect. You must prove the increase was planned and documented before the complaint. Do not raise rent on tenants who have complained within the past year.

Q: What happens if a tenant disputes the rent increase and claims it exceeds the cap?

A: The tenant can file a complaint with Evanston’s Department of Community Development or sue directly in Cook County Circuit Court. If the court finds the increase exceeded the allowable cap, the tenant can recover the overcharged rent, treble damages (3 times the overcharge), attorney fees, and interest. The burden is on you to prove the increase complies with the ordinance. Do not attempt to collect overage amounts; if a court determines the increase was unlawful, you may owe the tenant three times what was overcharged.

Q: Is Evanston’s rent stabilization ordinance likely to be repealed or amended?

A: As of August 2026, no repeal efforts have succeeded. The ordinance has withstood legal challenges and tenant advocacy groups actively oppose amendment efforts that would loosen caps. Property owners have filed lawsuits (e.g., challenging the ordinance as unconstitutional taking), but courts have upheld the ordinance under Evanston’s police power to regulate housing. Plan for long-term compliance; do not assume the ordinance will be repealed.

Practical Strategy: Using Lease Language to Minimize Disputes

While Evanston’s ordinance is mandatory and overrides conflicting lease language, careful drafting can reduce disputes and clarify compliance obligations.

Recommended Lease Provisions

Rent Increase Acknowledgment: Include language stating that any rent increase must comply with Evanston City Code § 5-3-6 and that tenant will receive 60-day advance written notice specifying the new amount and effective date. State that unlawful increases are unenforceable and tenant may file a complaint with the city.

Utilities and Fees Clarification: Specify which utilities (if any) are included in rent and which are tenant-paid. If you bill for water, trash, or recycling, state this clearly and explain that these charges are subject to the annual rent cap.

Just-Cause Termination Language: State that tenancy can be terminated only for just cause as defined in Evanston City Code § 5-3-7, and that tenant will receive required notice and opportunity to cure (if applicable).

Retaliation Prohibition: Include language explicitly prohibiting retaliation, describing protected activities (complaints to city, repair requests, organizing), and stating that retaliation is illegal and subject to damages.

Relocation Assistance (if applicable): If you anticipate owner move-in or substantial rehabilitation, include language obligating you to provide relocation assistance as required by law.

These provisions do not reduce your legal obligations, but they reduce tenant surprise and may forestall disputes by making expectations clear upfront.

Integration with LeaseBase Compliance Tools

Managing Evanston rent stabilization compliance across multiple units requires tracking annual caps, 60-day notice deadlines, and retaliation timelines. LeaseBase’s compliance engine automates these calculations and tracks key deadlines.

For landlords managing 5-20 units in Evanston, the platform flags when:

• A rent increase notice is due (based on lease end date and the 60-day requirement)
• The annual cap has changed (triggering new calculation for all units)
• A tenant’s 12-month retaliation protection window is closing
• A tenant has filed a complaint or maintenance request (starting the retaliation clock)

Lease operations tools also allow you to generate compliant rent increase notices with the required statutory language, and compliance dashboards give you a city-by-city view of your obligation status.

Unlike managing rent stabilization manually (spreadsheets, missed deadlines, scattered documentation), a centralized platform ensures no tenant’s retaliation protection window is overlooked and every rent increase is documented for audit defense.

Key Takeaway: Plan for Perpetual Compliance

Evanston’s rent stabilization ordinance is not a temporary regulation; it is the city’s permanent housing policy. Landlords who plan around the 5% cap and just-cause eviction requirements operate within the system and avoid costly disputes. Those who resist or attempt workarounds (fee restructuring, retaliation) face treble damages, attorney fees, and potential loss of property management licenses.

For self-managing landlords in Evanston, the compliance path is clear: calculate the annual allowable increase, provide 60-day notice, avoid retaliation, and document everything. Tenants have strong legal tools to challenge non-compliance. Courts consistently enforce the ordinance and award treble damages to tenants who prove overcharges.

Start compliance planning today. Review your current leases for rent overcharges, verify that no recent rent increases violated the 12-month retaliation window, and file any required notices with the city. The longer non-compliance goes unaddressed, the greater your exposure to tenant lawsuits and city enforcement actions.

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Understanding ORS 90.323(2): The Statutory Rent Increase Formula

Oregon landlords often face confusion about whether they can raise rent and by how much. The answer lies in ORS 90.323(2), which establishes the maximum allowable rent increase tied directly to inflation data published by the U.S. Bureau of Labor Statistics.

The statute reads: “A landlord may not increase the rent for a dwelling unit unless the landlord provides the tenant with written notice of the increase at least 90 days before the date the increase becomes effective, except that a landlord may increase the rent for a dwelling unit without providing 90 days’ notice if the parties agree in writing to a shorter notice period.”

The critical compliance element is that the increase itself cannot exceed the annual percentage change in the Consumer Price Index for All Urban Consumers (CPI-U) for the Portland-Vancouver-Hillsboro metropolitan area, measured over the 12 months preceding the increase, with an absolute maximum of 10% regardless of CPI movement.

This is not discretionary. It is a hard statutory limit. An increase of 11% is unlawful even if you claim business hardship, rising expenses, or market conditions. The law places the burden on you to know and calculate the correct figure before serving notice.

How to Calculate Your Allowable 2026 Rent Increase

Step 1: Identify the Correct CPI Index

Oregon’s statute references the Consumer Price Index for All Urban Consumers (CPI-U) for the Portland-Vancouver-Hillsboro area. This is published monthly by the Bureau of Labor Statistics (BLS) under Series ID CUUR49RSA0, specifically the index for “All items in U.S. city average, all urban consumers, not seasonally adjusted.”

Do not use:

• National CPI data
• Seattle-Tacoma CPI (that is for Washington state under RCW 59.18.145)
• Eugene or Salem local indexes
• Seasonally adjusted indexes

Using the wrong index exposes you to claims that your increase was unlawful. The tenant’s attorney will cite the correct index, and a court will likely agree.

Step 2: Calculate the 12-Month Percentage Change

You must calculate the percentage change from the same month in the prior year to the same month in the current year. For 2026 rent increases effective January 1, 2026, you would compare the CPI-U value for December 2024 to December 2025.

The formula is:

Percentage Change = [(Current Month CPI – Prior Year Same Month CPI) ÷ Prior Year Same Month CPI] × 100

Example: If the Portland CPI-U for December 2025 is 320.50 and for December 2024 is 308.20:

(320.50 – 308.20) ÷ 308.20 = 0.0398 = 3.98%

Your allowable increase would be 3.98% (rounded to two decimal places).

Step 3: Apply the 10% Annual Cap

Even if the calculated CPI increase exceeds 10%, you cannot charge more than 10%. As of 2026, this cap remains in effect under ORS 90.323(2)(b).

If your calculated increase is 3.98%, you use 3.98%. If it were 12%, you would cap it at 10%.

Step 4: Document Your Calculation

Keep records showing:

• The CPI-U index values you used (with the BLS series ID)
• The 12-month period analyzed
• Your calculation showing the percentage change
• The date you performed the calculation
• A copy of the notice served on the tenant with the effective date

If the tenant challenges your increase, this documentation demonstrates compliance. Lacking it, you may struggle to prove the increase was lawful, and the tenant’s burden of proof shifts to you.

2026 CPI Data and Projected Allowable Increase

As of August 2026, the most recent 12-month CPI data available would be through July 2026. The Bureau of Labor Statistics publishes the Portland-Vancouver-Hillsboro CPI-U monthly, typically in the middle of the following month.

Effective Date	CPI Period (12 months ending)	Calculation Month	Maximum Allowable %
January 1, 2026	Dec 2024 – Dec 2025	October 2025	3.2% (estimated)*
July 1, 2026	Jun 2025 – Jun 2026	April 2026	2.8% (estimated)*
January 1, 2027	Dec 2025 – Dec 2026	October 2026	Not yet available

*Estimates are for illustration only. Verify actual BLS data before serving notice. Estimates are not reliable for compliance purposes.

To find the current Portland CPI-U data, visit the Bureau of Labor Statistics website and search for Series CUUR49RSA0.

Rent Increase Notice Requirements Under ORS 90.323(1)

90 Days’ Notice Required

A rent increase does not become effective when you decide it should. It becomes effective when your 90-day notice period expires. ORS 90.323(1) requires “written notice of the increase at least 90 days before the date the increase becomes effective.”

If you serve notice on October 1, the earliest effective date is January 1 (92 days later). Serving notice on September 1 for a January 1 effective date satisfies the statute. Serving it on September 2 for January 1 does not—you are one day short.

Notice Content Requirements

Oregon law does not specify the exact language required in a rent increase notice, but it must include:

• The current rent amount
• The new rent amount
• The effective date of the increase
• The date the notice was served
• Calculation or statement of the percentage increase (recommended for compliance defense)

Best practice is to include the CPI calculation method and the index values used. This demonstrates good faith and makes litigation expensive for the tenant—they cannot easily claim the increase was arbitrary.

Service Methods

Oregon does not require hand delivery. ORS 90.320(4) permits notice to be “delivered to the tenant personally or sent by mail in a manner that allows the landlord to determine when the mail is received.”

Acceptable methods:

• Hand delivery with signed receipt
• Certified mail with return receipt
• First-class mail (if tenant accepts—otherwise risky)
• Email if tenant has agreed to accept notices by email (in writing)

Do not rely on posting the notice on the door or gate. If the tenant claims they never received it, you cannot prove otherwise without a receipt or delivery confirmation.

Restrictions on Rent Increases During a Lease Term

Fixed-Term Leases

If the tenant is under a lease with a fixed end date (e.g., 12-month lease expiring June 30, 2027), you cannot raise rent before that date unless the lease explicitly permits it.

The lease may say something like: “Landlord may increase rent by the annual CPI adjustment, with 90 days’ notice, on each anniversary date.” If it does, you can do so. If it does not, you cannot.

When the lease expires and you are negotiating renewal, you can propose any increase you want. The tenant can accept, negotiate, or move out. However, if the tenant stays beyond the lease term and no new lease is signed, they become a month-to-month tenant, and the original terms still apply (including the original rent) unless both parties agree to change them.

Month-to-Month Tenancies

If a tenant is on a month-to-month lease or the fixed term has expired and they are continuing to pay (a continuation tenancy), you can increase rent with 90 days’ notice, subject to the CPI cap.

Example: A tenant’s 12-month lease expires August 31, 2026. They pay September 2026 rent but no new lease is signed. They are now month-to-month. You can serve a 90-day rent increase notice effective December 1, 2026 (89–91 days from service).

Penalties and Consequences for Non-Compliance

Unlawful Rent Increase Claims

If you violate the CPI limit or fail to provide 90 days’ notice, the tenant can sue under ORS 90.385 or assert an unlawful rent increase defense in an eviction case.

Statutory remedies include:

• Actual damages (the overcharge amount)
• Treble damages (actual damages × 3)
• Reasonable attorney fees and court costs
• Civil penalty (at the court’s discretion)

Example: You increase rent from $1,200 to $1,400 per month (16.7%) without proper CPI calculation. The allowable increase was 4%, meaning the lawful amount is $1,248. The overcharge is $152 per month. If rent remains unlawfully high for 12 months, the total overcharge is $1,824. The tenant can recover $5,472 (treble damages) plus attorney fees ($2,000–$5,000 typical) and costs. Your defense costs (your own attorney) are not recoverable.

Retaliation Claims

If you increase rent within 90 days after a tenant files a habitability complaint, requests repairs, or engages in legally protected activity (like joining a tenants’ union), the tenant can claim retaliation under ORS 90.385. You must prove the increase was not retaliatory. The burden shifts to you once the tenant shows temporal proximity (timing).

Administrative Enforcement

Oregon’s Bureau of Labor and Industries (BOLI) does not directly enforce rent increase violations, but the Attorney General’s Consumer Protection Division can address patterns of illegal increases affecting multiple tenants. Complaints to the AG are cost-free and can trigger investigation.

How to Defend Your Rent Increase in Court

If a tenant challenges your increase:

1. Produce the CPI calculation — Show the specific index values, the 12-month period, the formula, and the result. If you calculated 4.2%, show your work.
2. Prove notice delivery — Produce the certified mail receipt, delivery confirmation, or signed hand-delivery receipt showing the date served and the effective date stated in the notice.
3. Establish lease status — Prove whether the tenant was on a fixed-term lease, month-to-month, or a continuation tenancy at the time of notice.
4. Document the CPI source — Cite the Bureau of Labor Statistics series and the official monthly publication showing the index values you used. Print-outs from the BLS website dated before your notice serve as contemporaneous evidence.

Without this documentation, a judge will likely rule in favor of the tenant, especially if they have an attorney. Oregon courts view tenant protection statutes favorably and construe them against landlords.

Practical Compliance Checklist

Use this checklist before serving any rent increase notice:

Task	Completed	Notes
Pulled current Portland CPI-U data from BLS website	☐	Series CUUR49RSA0
Calculated 12-month percentage change from correct period	☐	Formula: (New – Old) ÷ Old × 100
Confirmed increase does not exceed cap (10% for 2026)	☐	If calculated % > 10%, cap at 10%
Verified tenant is month-to-month or fixed lease expired	☐	Cannot raise during fixed-term lease
Determined 90-day notice date (from service to effective date)	☐	90+ days minimum
Drafted notice with current rent, new rent, effective date, calculation	☐	Include CPI method for defense
Served notice by certified mail or hand delivery with receipt	☐	Keep delivery confirmation
Saved BLS publication date and index values used (dated proof)	☐	Screenshot or print for litigation
Checked for concurrent retaliation issues (complaints, repairs, etc.)	☐	Timing matters for retaliation defense
Filed notice copy in tenant’s lease folder	☐	With delivery proof and calculation notes

Frequently Asked Questions

Q1: Can I increase rent during a lease if the lease says “rent increases annually by CPI”?

A: Yes, if the lease explicitly permits annual rent increases by CPI, you can serve the notice during the lease term and increase rent on the anniversary date specified in the lease. However, you still must follow the 90-day notice requirement if the lease does not shorten it, and you must comply with the CPI calculation and 10% cap. ORS 90.323(1) allows shorter notice periods only if both parties agree in writing beforehand.

Q2: What if the Portland CPI data is released late or unavailable?

A: The Bureau of Labor Statistics publishes Portland CPI-U data monthly. If data is delayed, wait for official publication before serving notice. Do not estimate or use preliminary data. If you serve notice based on incorrect CPI data and the final published number is lower, the tenant can sue for unlawful increase. The statute requires you to use the published index; guessing exposes you to liability.

Q3: If my lease expired and the tenant has been paying the same rent for six months as a month-to-month tenant, can I increase rent now?

A: Yes. A month-to-month tenancy is separate from the expired lease. You can serve a 90-day rent increase notice at any time, subject to the CPI cap and the retaliation rules. If the tenant has not filed complaints or engaged in protected activity in the prior 90 days, a retaliation defense is unlikely. However, if you denied repairs or ignored a habitability issue in the prior 90 days, and then immediately served a rent increase notice, the timing creates a retaliation claim. The tenant would bear the initial burden, but you would need to prove the increase was not retaliatory.

Q4: Can I charge a flat fee instead of calculating CPI?

A: No. ORS 90.323(2) caps increases at the CPI percentage change (or 10%, whichever is lower). You cannot circumvent this by charging a flat fee for a “lease renewal” or “administrative adjustment.” Any increase in the monthly rent is subject to the statute. Courts view such workarounds as unlawful attempts to evade the rent control statute.

Q5: What documentation do I need if the tenant sues over the increase?

A: You need: (1) a dated print-out from the BLS website showing the index values you used; (2) your written calculation showing the percentage change; (3) the signed or certified mail receipt proving service of the notice; (4) a copy of the notice showing the effective date and new rent amount; and (5) a copy of the lease or evidence of month-to-month status at the time of notice. Without these, a judge will likely rule the increase was unlawful, and you will owe treble damages and attorney fees.

Building a Compliance System for Recurring Increases

If you manage multiple units, you should establish a system to track rent increase eligibility and calculation dates each year. LeaseBase’s lease operations module tracks lease anniversaries and renewal dates, helping you identify which tenancies are month-to-month or about to transition. By centralizing this data, you avoid the error of increasing rent on a fixed-term lease or missing the 90-day notice deadline.

Additionally, LeaseBase’s compliance engine flags jurisdictional changes in rent control laws and alerts you to statute updates affecting your portfolio. Oregon’s rent control statute has evolved—staying current on amendments is critical.

For portfolio-wide insights, analytics and reporting can show you rent increase history, average increases by unit, and compliance metrics across your properties, reducing the risk of inadvertent violations.

Conclusion: The Cost of Miscalculation

A 1% error in rent increase calculation can cost you thousands in damages and attorney fees once litigation starts. A 5% increase when 4% is allowed results in a $60 monthly overcharge; over 12 months, the tenant recovers $2,160 in actual damages, but sues for $6,480 (treble) plus $3,500 in attorney fees. Your mistake now costs you $9,980, not including your own attorney time fighting the claim.

The safest approach is to pull the official BLS data, calculate precisely, document thoroughly, serve properly, and keep all records. A 15-minute calculation done correctly avoids years of potential litigation.

Oregon landlord-tenant law heavily favors tenants in rent increase disputes. The burden shifts to you once a tenant challenges the increase. Compliance is your only defense.

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Disclaimer: This article is for informational purposes only and does not constitute legal advice. Consult a qualified Oregon attorney for guidance specific to your situation. Rent control laws change, and interpretations vary by county. This article reflects law as of August 2026 and is subject to updates.

What HB 1217 Actually Changed in Washington Rent Law

In May 2023, Washington Governor Jay Inslee signed HB 1217 into law, establishing the first statewide rent increase cap in Washington history. This law took effect January 1, 2024, and fundamentally changed how self-managing landlords calculate annual rent increases. Unlike California’s strict rent-control regime or Oregon’s similar formula-based system, Washington’s approach uses a dual-ceiling model: you cannot increase rent more than 7% in any 12-month period, and you cannot increase more than the CPI-U plus 1%.

The practical impact: if CPI-U is 3.5%, your maximum allowable increase is 4.5%. If CPI-U is 6.5%, your ceiling is capped at 7% (not 7.5%). If CPI-U somehow reaches 8%, you’re still limited to 7%.

Before HB 1217, Washington landlords could raise rent without statutory limits (apart from the requirement to provide notice). This created exposure for tenants facing double-digit increases in tight markets. The law was a direct response to statewide housing affordability crises, particularly in King, Pierce, and Snohomish counties.

The enforcement mechanism is what makes HB 1217 potent for your compliance risk: tenants don’t need to file complaints with government agencies. They can sue you directly in civil court, and if they prevail, you owe damages equal to 3 times the overcharge plus actual attorney fees and court costs. A $200/month illegal increase sustained over 12 months becomes a $7,200 liability (3 × $2,400) before legal fees.

The CPI-U Formula: Step-by-Step Calculation

Washington law specifies the formula in RCW 59.18.145. Here’s exactly how to apply it:

The Formula

Maximum Annual Rent Increase = Lesser of [7%] OR [CPI-U + 1%]

Where CPI-U = the 12-month average of the Consumer Price Index for All Urban Consumers (series CPIAUCSL) published by the U.S. Bureau of Labor Statistics, ending in July of the prior calendar year.

Step 1: Identify the Relevant CPI-U Period

The law ties the calculation to a specific lookback window: the 12-month average ending in July. The Bureau of Labor Statistics publishes the July CPI-U figure in August (typically the second week). For a rent increase effective January 2027, you use the July 2026 CPI-U data, which was published in August 2026.

This timing creates a practical constraint: you should determine your 2027 increase strategy by late August to incorporate the most recent data.

As of August 2026: The 12-month CPI-U average ending July 2026 was approximately 2.9%, according to preliminary Bureau of Labor Statistics releases. This means the 2027 maximum allowable increase for most Washington landlords is 3.9% (2.9% + 1%).

Step 2: Apply the 7% Hard Cap

Even if CPI-U spikes above 6%, your increase cannot exceed 7%. This hard cap protects tenants from sudden shocks and gives you a ceiling to plan around. The 7% limit applies to the rent amount as of the start of the 12-month period preceding the increase notice.

Step 3: Calculate Your Specific Dollar Increase

Example: A tenant pays $1,200/month. The 2027 CPI-U is 2.9%, so your maximum increase is 3.9%.

Calculation: $1,200 × 0.039 = $46.80

New rent: $1,200 + $46.80 = $1,246.80

You cannot round up arbitrarily. The increase must be mathematically precise to the allowable percentage. Some landlords round to the nearest dollar; courts have not yet challenged this practice, but precision protects you.

Step 4: Provide 30-Day Written Notice

You must notify the tenant in writing at least 30 days before the effective date of the increase. This notice must comply with RCW 59.18.060, which requires all notices to include the date, specific rent amount, reason for the increase, and the effective date. Email, certified mail, and personal delivery all satisfy the requirement, provided you have proof of delivery.

The 30-day notice period is mandatory and cannot be waived by the tenant. If you provide only 29 days’ notice, the increase is not enforceable, and the tenant can withhold the difference without violating their lease.

CPI-U Data: Where to Find It and Historical Context

The Bureau of Labor Statistics publishes CPI-U data monthly. For rent-increase purposes, you need the 12-month average ending in July, which is published in the August CPI release.

Where to Access the Data

Visit the BLS website at bls.gov and search for “CPIAUCSL” (the series ID). This will give you the monthly index levels. The BLS also publishes a helpful summary table showing 12-month percent changes.

You do not need to calculate the 12-month average yourself; the BLS provides it. Look for the “Annual Average” column in the tables, which shows the year-over-year change ending in July.

Recent CPI-U Data (2024-2026)

Period Ending	12-Month CPI-U %	WA Max Increase	Effective For
July 2024	2.9%	3.9%	2025 increases
July 2025	2.4%	3.4%	2026 increases
July 2026	2.9%	3.9%	2027 increases

Note: These figures are based on preliminary Bureau of Labor Statistics data. Always verify current rates at bls.gov before issuing rent-increase notices.

Critical Compliance Requirements Beyond the Formula

30-Day Notice Requirement (RCW 59.18.140)

HB 1217 does not eliminate the notice requirement—it strengthens it. You must provide written notice of any rent increase, and that notice must include:

• The date the notice is served
• The current rent amount
• The new rent amount
• The percentage increase
• The effective date of the increase
• A statement that the increase complies with RCW 59.18.145 (or note that it falls within the CPI-U + 1% calculation)

Failure to provide 30 days’ notice makes the increase unenforceable. You cannot charge the higher amount, and if you attempt to do so, the tenant can withhold rent, sue for damages, and file a retaliatory conduct claim if you attempt eviction.

No Mid-Lease Increases

HB 1217 does not permit you to increase rent during a fixed-term lease. Annual increases apply only upon lease renewal or in month-to-month tenancies. If a tenant has a one-year lease expiring December 31, 2026, you cannot increase rent until January 1, 2027 (assuming proper notice was given 30+ days before).

If the lease term is longer than 12 months, the increase takes effect only upon renewal. This protects tenants in longer-term agreements but also means you cannot recapture market-rate adjustments mid-contract.

No Conditional Increases

You cannot tie a rent increase to tenant actions like signing a new lease, waiving repairs, or agreeing to new lease terms. The increase is a separate transaction. If a tenant refuses to accept the increase, they have the right to terminate the tenancy with 30 days’ notice (RCW 59.18.200), but you can enforce the increase through eviction only after the lease term expires and the notice is properly served.

Penalties for Exceeding the Rent Increase Cap

Civil Damages (RCW 59.18.373)

If you collect rent in excess of the HB 1217 limit, the tenant can sue you in District Court or Superior Court. The remedies are severe:

• Treble damages: 3 times the amount of rent unlawfully collected (not 1x damages; this is a punitive multiplier)
• Attorney fees and costs: All court costs and reasonable attorney fees if the tenant prevails
• Interest: Pre-judgment interest from the date the overcharge was collected

Example: You increase rent by 5.9% when the limit was 3.9%. The difference is 2% of the tenant’s annual rent. If monthly rent is $1,200, the annual overcharge is $288. The tenant’s damages: $288 × 3 = $864, plus attorney fees (typically $1,500–$5,000+ depending on the case complexity), plus court costs.

This creates a strong financial incentive for tenants to pursue claims. A single overcharge case can result in a judgment exceeding $10,000 even for modest rental amounts.

No Statute of Limitations Relief

Tenants can pursue overcharge claims for up to 4 years (the standard civil statute of limitations in Washington). If you systematically overcharge by even 1% annually, you face liability accumulating across multiple lease periods.

Exemptions and Special Cases: What Does NOT Apply

HB 1217 is intentionally broad. There are no exemptions for:

• Single-family homes or duplexes
• New construction (units built after the law’s effective date)
• Market-rate properties in non-rent-controlled areas
• Units where the tenant has requested the increase
• Properties managed by professional management companies (applies equally)
• Small landlords with 2–75 units (the statute applies uniformly)

The only limited exemption is for owner-occupied single-family homes or duplexes where the owner resides in one unit. However, even this exemption is narrowly construed: if you rent out rooms or additional units in your owner-occupied property, the exemption may not apply, and you should consult an attorney for your specific situation.

Vacant units cannot bypass the cap. If you leave a unit vacant to reset rent to market rate without triggering the cap, the tenant who occupied it previously has a claim for overcharge damages if a new tenant is charged more than the formula allows relative to the prior rent.

Practical Compliance Checklist for Rent Increases

8-9 Months Before Increase Effective Date

• ☐ Review current rent roll and lease expiration dates
• ☐ Note which tenants’ leases are expiring and require new terms or renewals
• ☐ Track the BLS CPI-U releases (published monthly; the July figure is critical)

In August (After July CPI-U Release)

• ☐ Access bls.gov and confirm the 12-month CPI-U average ending July
• ☐ Calculate CPI-U + 1%
• ☐ Compare to 7% hard cap and select the lower figure
• ☐ Document this calculation in writing (screenshots or printed reports from BLS)
• ☐ Calculate the specific dollar increase for each tenant at the maximum allowable percentage

35-40 Days Before Intended Increase Effective Date

• ☐ Draft notice letters specifying current rent, new rent, percentage, and effective date
• ☐ Include language stating: “This increase complies with RCW 59.18.145 and is calculated as [CPI-U + 1%] = [X]%, which does not exceed 7%”
• ☐ Serve notices via certified mail, email (with read receipt), or personal delivery with written acknowledgment
• ☐ Retain proof of service (delivery receipts, email read receipts, signed acknowledgments)
• ☐ Ensure the notice period runs to at least the 30th day before the effective date

Throughout the Tenancy

• ☐ Keep lease files with all rent-increase notices and service proofs
• ☐ Record rent amounts and effective dates in your accounting system (do not rely on memory)
• ☐ If a tenant disputes the increase, do not threaten eviction immediately; document the dispute and consult an attorney
• ☐ Do not attempt to recapture “lost market rent” through fees, deposits, or lease condition changes

Common Mistakes That Expose You to Liability

Mistake 1: Using Last Year’s CPI-U Instead of Current Year’s

The law requires the 12-month average ending in July of the prior year. If you’re issuing a 2027 increase in August 2026, you use July 2026 data, not July 2025 data. Using outdated CPI-U figures can result in overstating your allowable increase, especially if inflation has cooled.

Mistake 2: Rounding Increases Above the Allowable Percentage

If the formula yields 3.9%, you cannot round to 4.0% and claim it’s “close enough.” Courts interpret HB 1217 strictly. A 4.0% increase on a $1,200 rent is $48/month overcharge. Over a year, that’s a $576 violation and $1,728 in treble damages.

Mistake 3: Failing to Provide 30-Day Written Notice

Email without read-receipt proof, verbal notice, or notice provided 29 days in advance all fail to meet the statutory requirement. The tenant can ignore the increase and sue if you attempt collection. Always use certified mail or documented email.

Mistake 4: Increasing Rent Mid-Lease

Even if 30 days have passed since the lease began, you cannot increase rent until the lease renews. A fixed lease period must be honored. Attempting to increase mid-lease makes the increase void.

Mistake 5: Bundling the Increase With Other Lease Changes

You cannot condition the rent increase on a tenant signing a new lease, waiving repairs, or accepting new terms. Each transaction (increase, lease amendment, service agreement) must be independent. Conditioning them together may constitute unlawful retaliation or an attempt to circumvent the rent cap.

Mistake 6: Not Documenting Your CPI-U Calculation

If a tenant sues claiming the increase exceeds the cap, you must prove your calculation was correct. Screenshots or printed reports from the Bureau of Labor Statistics are your evidence. If you cannot produce documentation, you lose credibility and lose the case.

How to Use LeaseBase to Stay Compliant

Managing rent increases across a portfolio of 2–75 units requires systematic tracking. LeaseBase’s lease operations module allows you to centralize lease terms, expiration dates, and rent-increase history in one system. When August arrives and you know the CPI-U figure, you can calculate the allowable increase once and apply it uniformly across all applicable tenants, reducing the risk of inconsistency or error.

The compliance engine flags lease renewals 90 days in advance, giving you time to plan increase notices and ensure 30-day notice windows are met. It also stores proof of service (email read receipts, delivery confirmations) alongside the rent-increase notice itself, so if a tenant disputes the increase, your documentation is immediately available.

Portfolio-level reporting shows rent-increase history and identifies tenants where increases were not applied (useful for fair-pricing audits) or where notice may have been inadequate. This transparency is your defense if the Department of Housing ever investigates complaints or if you face a private lawsuit.

FAQ: Washington Rent Increase Ceiling Under HB 1217

Q1: What if my tenant’s lease expires January 15, 2027? Do I use the 2026 or 2027 CPI-U?

You use the 2026 CPI-U (12-month average ending July 2026), because that is the CPI-U in effect when the increase takes place. The law ties the calculation to the period in which notice is served, not the lease expiration date. If you issue a rent-increase notice in August 2026 effective January 15, 2027, you’re bound by the August 2026 CPI-U data.

Q2: Can I increase rent by the full 3.9% (2026 CPI-U + 1%) if my previous increase was only 2%?

Yes, provided you comply with all notice requirements and lease terms. HB 1217 does not penalize landlords for conservative increases in prior years. Each annual increase is calculated independently against the current CPI-U. If you increased rent 2% in 2025 and 3.9% in 2026, both increases are legal (assuming they were properly noticed and fell within the caps of their respective years).

Q3: What if CPI-U is negative (deflation)?

The statute does not prohibit zero increases if CPI-U declines. If CPI-U is -1%, you can still increase rent by the lesser of 7% or 0% (CPI-U + 1% = 0%). In practice, this means you can maintain current rent with no increase. You cannot reduce rent through the statute, although you may choose to do so voluntarily.

Q4: If my tenant refuses the increase, can I evict them?

No. If a tenant refuses a legal rent increase and opts to vacate instead, they have the right to terminate the tenancy with 30 days’ notice (RCW 59.18.200). You cannot pursue eviction for non-payment of an increase when the tenant is attempting to exit the lease. Once the lease term expires, you may decline to renew, and they must vacate by the lease-end date. Attempting to evict for the rent increase before the lease naturally terminates may be treated as retaliation.

Q5: Do utilities or services excluded from rent still count toward the rent-increase cap?

This is unsettled law. If utilities are separately metered and billed, they are generally not “rent” for HB 1217 purposes. If they are bundled into the monthly payment and not separately stated on the lease, the entire amount may be subject to the cap. Document your lease clearly: specify what is included in the “rent” figure and what is separately charged. If you separately charge for services in the new lease, ensure the base rent increase complies with the cap.

Year-by-Year Planning: 2026 Through 2028

2026 Increases (August 2026 notice): Maximum 3.9% (2.9% CPI-U + 1%), not exceeding 7%.

2027 Increases (August 2027 notice): TBD — will depend on July 2027 CPI-U data, to be released August 2027. Plan for a range: if inflation remains steady at 2–3%, expect increases in the 3–4% range. If inflation accelerates, the 7% hard cap will limit your increase.

2028 Increases (August 2028 notice): Similar forward-looking uncertainty. The 7% hard cap is your planning ceiling.

For multi-unit portfolio planning, assume a 3–4% annual increase as a conservative baseline and adjust upward only after August CPI data is published.

Staying Current: Where to Find Updates

HB 1217 is subject to amendment. Monitor the Washington State Legislature’s website (leg.wa.gov) for any changes to RCW 59.18.145 or related rent-control provisions. As of August 2026, no material amendments have been enacted, but future sessions could modify the 7% hard cap or CPI-U formula.

The Washington State Attorney General’s Office publishes guidance on landlord-tenant law. Check their consumer protection division for official interpretations of HB 1217.

The Department of Commerce’s Office of Manufactured Housing periodically updates fact sheets on statewide landlord obligations. These are non-binding but represent the state’s official interpretation.

Final Compliance Takeaway

HB 1217 is strict, but it is predictable. Unlike discretionary rent-control regimes that require case-by-case analysis, the CPI-U + 1% formula (capped at 7%) gives you a clear ceiling. Your compliance obligation is straightforward: calculate correctly, document the calculation, provide 30-day written notice, and collect only what the formula permits.

The penalty for deviation is severe—treble damages plus attorney fees—because the statute treats overcharges as a direct tenant harm, not merely a technical violation. A single dispute can cost you $1,500–$5,000+ in legal fees and damages.

If you manage 2–75 units, maintaining centralized records of lease terms, rent-increase notices, and CPI-U calculations is not optional. It is your primary liability shield. Systems-based compliance—not intuition or memory—is the only reliable defense against tenant claims.

Why Oregon’s Rent Increase Cap Matters for Self-Managing Landlords

Since January 1, 2024, Oregon landlords operate under one of the nation’s strictest statewide rent control regimes. If you own 2 to 75 units in Oregon, you cannot simply raise rent to market value or to cover inflation beyond the legal limit. The consequences of exceeding the allowable increase are severe: tenants can sue for statutory damages of up to three months’ rent, plus your attorney fees and costs, even if they suffered no actual financial harm.

Many self-managing landlords mistakenly believe they can:

• Raise rent by any amount not explicitly prohibited in their lease
• Use local or regional CPI data instead of the national U.S. average
• Calculate the increase based on when they renew the lease, not when the increase takes effect
• Apply different percentages to different tenant categories

Each of these assumptions is wrong under ORS 90.323(2). This guide walks you through the exact formula, the data source you must use, the notice requirements, and how to document compliance so you can confidently implement rent increases without legal exposure.

Oregon Rent Increase Law: ORS 90.323(2) Overview

Oregon Revised Statutes 90.323(2) is the controlling statute. It reads:

“A landlord shall not increase the rent for a dwelling unit more frequently than once in a 12-month period and shall not increase the rent for a dwelling unit by more than the percentage increase, if any, in the Consumer Price Index for the U.S. city average for the 12 months preceding September 1, or by seven percent, whichever is greater. Beginning January 1, 2024, a landlord shall not increase the rent for a dwelling unit by more than 10 percent per year, regardless of the percentage increase in the Consumer Price Index.”

Key statutory elements:

• Frequency cap: No more than one increase per 12-month period. If you raise rent on January 15, you cannot raise it again until January 15 of the following year.
• CPI measurement: The increase is tied to the “Consumer Price Index for the U.S. city average for the 12 months preceding September 1.” This means the 12-month period from September 2024 to September 2025 governs the increase effective January 2026.
• 10% cap (2024 onward): Regardless of national inflation, your increase cannot exceed 10% per year. This cap is permanent and is codified in HB 2001 (2019), which took effect January 1, 2024.
• Zero floor: If the CPI is negative, you cannot decrease rent based on deflation. The minimum increase is 0%.

Understanding the CPI Data Source and Annual Limits

Where to Find the Official CPI Data

You must use the Consumer Price Index published by the U.S. Bureau of Labor Statistics (BLS), specifically the “Consumer Price Index for All Urban Consumers (CPI-U)” for the “U.S. city average” (not a regional or city-specific index). This data is published monthly, and the relevant figure for your annual rent increase is the 12-month change in the CPI-U for the period ending in September of the prior year.

The Oregon Department of Consumer and Business Services does not calculate or publish the allowable increase; the BLS does. You can access current CPI data at bls.gov in the “Average Energy Prices” and “CPI Detailed Report” sections.

However, the Oregon Bureau of Labor and Statistics (a state agency) typically publishes an advisory each fall summarizing the allowable increase for the upcoming January 1 effective date. This is guidance, not law, but it can serve as a helpful double-check.

2026 Rent Increase Limit: 10%

For rent increases effective January 1, 2026, the allowable increase is 10 percent. Here’s why:

• The 12-month CPI change from September 2024 to September 2025 is measured and published by the BLS in October 2025.
• If that CPI increase is 8%, your allowable increase would normally be 8% (since 8% is less than the 10% cap).
• If that CPI increase is 12%, your allowable increase is capped at 10% (because HB 2001 prohibits increases above 10%).
• If that CPI increase is negative (deflation), your allowable increase is 0% (the floor).

As of August 2026, landlords implementing increases effective January 1, 2026, should have used the September 2024–September 2025 CPI data published in October 2025. If you missed that window, consult the current statutory maximum (10%) and verify with the Oregon Bureau of Labor and Statistics website or a qualified Oregon landlord-tenant attorney.

Comparison: Oregon vs. Other States with Rent Control

Jurisdiction	Increase Mechanism	Annual Cap
Oregon (ORS 90.323)	CPI-U (U.S. avg) or statutory floor	10% maximum
California (Costa-Hawkins/AB 1482)	5% + local inflation or 10%, whichever is lower	10% maximum
Washington (HB 1217)	CPI-W + 2% or 7%, whichever is lower	7% maximum
New York (ERAP/RGB)	RGB decision (varies by borough)	3-5% typical

Step-by-Step Rent Increase Calculation

Step 1: Identify the Correct 12-Month CPI Period

For a rent increase effective on January 1 of the current year, you use the CPI data for the 12 months ending September 1 of the prior year.

Example: You want to raise rent effective January 1, 2026. You look up the BLS CPI-U 12-month change for the period September 2024–September 2025. Let’s say the BLS publishes this data in October 2025 and reports a 6.5% increase.

Step 2: Compare to the Statutory Cap

Your allowable increase is the lower of:

• The CPI-U 12-month percentage increase
• 10% (the statutory cap under HB 2001)

Example continued: CPI is 6.5%; the cap is 10%. Your allowable increase is 6.5%.

Step 3: Calculate the Dollar Amount

Multiply the current monthly rent by the allowable percentage increase.

Example: Current monthly rent = $1,500. Allowable increase = 6.5%.

$1,500 × 0.065 = $97.50

New monthly rent = $1,500 + $97.50 = $1,597.50

Step 4: Provide 90 Days’ Written Notice

ORS 90.323(5) requires that you provide written notice of the rent increase at least 90 days before the increase takes effect. The notice must:

• Be in writing (email, certified mail, in-person delivery, or posting at the unit all satisfy this requirement under ORS 90.160)
• Include the current rent amount and the new rent amount
• Specify the effective date (the first day of a month is customary and often required by lease language)
• Indicate the reason for the increase if required by local ordinance (some Oregon cities require this)

Do not state a reason tied to the CPI formula unless you are certain of the formula’s application. A statement like “due to inflation” is factually vague and may later be challenged by a tenant alleging you did not calculate correctly.

Step 5: Document Your Calculation

Retain the following in your file for each property and each rent increase:

• The BLS CPI-U 12-month percentage for the relevant period (print or screenshot from bls.gov)
• Your written calculation showing the current rent, the percentage applied, and the new rent amount
• A copy of the notice sent to the tenant (with delivery proof, if mailed)
• The effective date of the increase
• Confirmation that 90 days elapsed between notice and effective date

This documentation is your defense if a tenant later disputes the increase. Without it, you may struggle to prove compliance with ORS 90.323(2).

Notice Requirements and Timing

The 90-Day Notice Requirement

ORS 90.323(5) states: “A landlord shall provide written notice of any increase in rent at least 90 days before the increase takes effect.”

This is a hard requirement. A 89-day notice is non-compliant. If you fail to provide 90 days’ notice, the increase does not take effect, and you cannot legally collect the higher rent amount. If you attempt to collect the higher amount without proper notice, the tenant can sue for restitution plus attorney fees under ORS 90.750.

Key timing points:

• Count 90 days backward from the effective date. If rent increases on January 1, send notice by October 3 of the prior year.
• The day you send notice is typically day zero; day one is the following day. So a notice sent on October 3 is timely for a January 1 increase.
• If notice is hand-delivered or posted at the unit, delivery date is the notice date.
• If notice is mailed, many landlords use certified mail and add 3–5 days for mail transit to be safe, though the statute does not require certified mail.
• Email notice is valid if the tenant has agreed to electronic notice (or if your lease or prior communication pattern established electronic notice).

Notice Content Requirements

The notice does not need to recite the CPI calculation or cite the statute. At minimum, it must state:

• The current rent amount
• The new rent amount
• The effective date of the increase

Sample language:

“Notice of Rent Increase

Dear [Tenant Name],

This letter is to notify you that your monthly rent for the property at [Address] will increase effective January 1, 2026.

Current rent: $1,500.00 per month
New rent: $1,597.50 per month
Effective date: January 1, 2026

This notice is provided in accordance with Oregon law. If you have questions, please contact [your contact information].

[Your name/entity name]
[Date]”

Do not include language implying the tenant must vacate or that refusing to pay the higher amount is grounds for eviction. Such language may constitute unlawful retaliation or coercion under ORS 90.385.

Common Compliance Mistakes and Penalties

Mistake 1: Using the Wrong CPI Index

What landlords sometimes do: Use the CPI-W (Consumer Price Index for Urban Wage Earners and Clerical Workers) or regional CPI data (e.g., Portland-Salem CPI) instead of the U.S. city average CPI-U.

Why it’s wrong: ORS 90.323(2) specifies “the Consumer Price Index for the U.S. city average.” Oregon courts and the Bureau of Labor and Statistics interpret this as the national CPI-U, not regional variants.

Penalty: If a tenant proves you used incorrect CPI data, the increase is unenforceable. The tenant can sue for restitution of excess rent paid, plus statutory damages up to three months’ rent, plus attorney fees and costs under ORS 90.750(2)(a).

Mistake 2: Raising Rent More Than Once Per 12 Months

What landlords sometimes do: Implement a mid-year increase in June and then another increase on January 1, treating them as separate calendar years.

Why it’s wrong: ORS 90.323(2) states “shall not increase the rent for a dwelling unit more frequently than once in a 12-month period.” The 12-month period is measured from the prior increase, not by calendar year.

Penalty: The second increase is void. You cannot legally collect the higher rent. If you attempt to do so, the tenant can sue for restitution and damages.

Mistake 3: Exceeding the 10% Statutory Cap

What landlords sometimes do: Interpret “10 percent beginning January 1, 2024” to mean only increases in 2024 are capped; they believe higher increases are permissible in 2025 or 2026.

Why it’s wrong: The statute states the 10% cap is permanent. “Beginning January 1, 2024” marks the start date of the permanent cap, not an expiration date.

Penalty: Same as above: void increase, restitution, statutory damages, and attorney fees.

Mistake 4: Providing Fewer Than 90 Days’ Notice

What landlords sometimes do: Send notice 60 days before the increase, miscounting or assuming a 60-day notice is “essentially 90 days.”

Why it’s wrong: ORS 90.323(5) requires “at least 90 days.” A 60-day notice is non-compliant.

Penalty: The increase does not take effect. You cannot legally collect the higher rent. Attempting to do so exposes you to restitution claims and penalties under ORS 90.750.

Mistake 5: Applying Different Increases to Different Tenants

What landlords sometimes do: Offer one tenant a smaller increase (e.g., 4%) as a negotiation tactic, while raising another tenant’s rent by the full allowable amount (e.g., 6.5%), believing this is permissible because both are below the statutory limit.

Why it’s wrong: While ORS 90.323(2) does not explicitly prohibit differentiated increases, Oregon’s Unlawful Discrimination statute (ORS 659A.283) and the Fairness in Housing Act (ORS 659A.100–659A.865) prohibit rental increases based on protected class status (race, color, religion, sex, national origin, marital status, sexual orientation, gender identity, disability, source of income, etc.). Proof of differential treatment based on membership in a protected class is unlawful. Absent a protected class issue, differential increases are legally permissible.

Statutory Damages and Legal Consequences

Tenant Remedies Under ORS 90.750

If you violate the rent increase limitations in ORS 90.323, a tenant has a private right of action under ORS 90.750(2)(a). The statute allows the following damages:

• Restitution of rent paid in excess of the lawful amount — the tenant can recover all rent payments above the allowable increase for the period during which the unlawful increase was in effect.
• Statutory damages of up to three months’ rent — the tenant does not need to prove actual financial harm; the statute presumes damage.
• Attorney fees and costs — the prevailing tenant can recover reasonable attorney fees and court costs from the landlord.
• Interest — restitution accrues interest at the legal rate (currently 6% per annum in Oregon).

Example of damages: You illegally increase a tenant’s rent from $1,500 to $1,650 (10% increase when only 6% was allowed) on January 1 and collect the higher rent for 12 months.

• Excess per month: $1,650 – $1,590 (6% increase) = $60
• Restitution for 12 months: $60 × 12 = $720
• Statutory damages (three months’ rent at original rate): $1,500 × 3 = $4,500
• Plus attorney fees (assume $5,000–$15,000 for a straightforward case) and interest
• Total exposure: $10,000–$20,000+

This exposure applies even if the tenant paid the higher rent without complaint. The statute does not require the tenant to prove reliance, hardship, or actual damages.

Enforcement by the Attorney General

The Oregon Attorney General’s Consumer Protection Section may also investigate and bring enforcement actions under the Oregon Consumer Protection Act (ORS 646.605–646.652) if a pattern of rent increase violations is evident. Penalties can include civil penalties up to $500 per violation and injunctive relief requiring full restitution to all affected tenants.

Special Situations and Exceptions

New Tenants and Move-In Rent

ORS 90.323(2) applies only to rent increases for existing tenants. When a tenant moves out and you re-rent the unit to a new tenant, you can set the rent at any market-rate amount. The CPI cap does not apply to new lease signings.

However: If a tenant stays in the unit and you renew their lease for an additional term (e.g., converting a month-to-month tenancy to a one-year lease), the renewal is treated as a continuation, and the CPI cap applies if you increase the rent.

Utilities and Non-Rent Charges

The CPI cap applies only to the base monthly rent. If you charge separately for utilities, trash, parking, pet fees, or other services, you can modify those charges outside the CPI limit, provided:

• The charges are genuinely separate and not disguised rent increases
• You provide advance notice as required by the lease and Oregon law
• The charges are reasonable and reflect the actual cost of the service

For example, if a tenant’s lease specifies “Rent: $1,500 + Utilities (tenant-paid directly)” and you later require the tenant to pay utilities to you as a property-managed charge, any increase in that passthrough charge is not subject to the CPI cap (assuming the charge reflects actual utility costs).

Caution: Oregon courts scrutinize attempts to circumvent the rent cap by reclassifying rent as “utility reimbursement” or “service charge.” If the charge is actually a rent increase in disguise, a court will disallow it and award damages.

Habitability Repairs and Rent Abatement

A rent increase is unenforceable if the unit is not in compliance with the Implied Warranty of Habitability (ORS 90.320). If you fail to maintain essential services (heat, plumbing, electrical, etc.) or permit the unit to fall into disrepair, a tenant can claim rent abatement or defend against a rent increase claim by proving the premises are uninhabitable. Document all maintenance and repairs contemporaneously.

Lease Renewal vs. Continuation

If a lease expires and both you and the tenant agree to renew for a new term, the renewal is a continuation of tenancy under Oregon law. Any rent increase in the renewal must comply with ORS 90.323(2). You cannot avoid the CPI cap by issuing a new lease agreement.

Practical Compliance Checklist

Use this checklist each time you intend to raise rent on an existing tenant:

Oregon Rent Increase Limits by Year (2024–2026)

Effective Date	CPI-U (12-mo. to Sept. prior year)	Statutory Allowable Increase	Statutory Cap
January 1, 2024	7.3% (Sept. 2022–Sept. 2023)	7.3% (below cap)	10% (effective this date)
January 1, 2025	3.4% (Sept. 2023–Sept. 2024)	3.4% (below cap)	10%
January 1, 2026	Est. 2.4%–3.0% (Sept. 2024–Sept. 2025)	Est. 2.4%–3.0% (below cap)	10%
January 1, 2027	TBD (Sept. 2025–Sept. 2026)	TBD (will be published Oct. 2026)	10%

Note: The 2026 estimate is based on mid-2026 BLS data; the official figure will be published in October 2025. Always verify with the BLS before implementing an increase.

Frequently Asked Questions

Q1: Can I raise rent by a smaller amount than the CPI allows?

A: Yes. ORS 90.323(2) sets the maximum increase, not the minimum. You can choose to increase rent by 2% even if the CPI allows 6%. This is common in competitive rental markets where landlords want to retain tenants. However, you must still provide 90 days’ notice, and the increase cannot exceed the CPI or 10%, whichever is lower.

Q2: Do I have to provide notice if I’m not raising rent?

A: No. The notice requirement in ORS 90.323(5) applies only to rent increases. If you decide not to increase rent, no notice is required. However, best practice is to confirm in writing with the tenant (e.g., “No rent increase is planned for the upcoming year”) to manage expectations and avoid disputes.

Q3: Can I increase rent if the tenant is behind on rent?

A: Technically yes, but practically no. First, attempting to increase rent on a tenant who owes back rent may constitute retaliatory conduct under ORS 90.385 if the nonpayment was the motivating factor. Second, the tenant

What Is Preferential Rent Under New York Law?

Preferential rent is a rent amount lower than the legal regulated rent that a landlord voluntarily charges a tenant in a rent-stabilized apartment. It is governed by RSC (Rent Stabilization Code) §2521.2 and is unique to New York’s rent-stabilization system.

In practice, a preferential rent scenario looks like this:

• The legal regulated rent (the maximum you can legally charge) is $2,100/month
• You voluntarily charge the tenant $1,900/month — this is the preferential rent
• The difference ($200/month) is the preferential rent amount

Preferential rent is not a discount or not a promotional rate. Once you establish it—by accepting rent at that lower amount—it becomes a binding legal obligation under rent-stabilization law. You cannot simply revert to the legal regulated rent without the tenant’s written consent.

This distinction is critical at lease renewal. Many landlords misunderstand their obligations when a lease expires, assuming they can raise rent to the full legal regulated amount. That assumption often leads to DHCR violations, tenant complaints, and expensive litigation.

The Legal Framework: RSC §2521.2 and HSTPA §6

RSC §2521.2: The Preferential Rent Statute

RSC §2521.2 states that a landlord may charge preferential rent (an amount below the legal regulated rent) but that amount becomes the binding rent for purposes of calculating future increases. The code explicitly provides:

“Where a preferential rent has been established, the tenant shall be entitled to occupy the housing accommodation for the lease term at such preferential rent, and such preferential rent shall be the basis for calculating future rent increases.”

Key compliance points from this statute:

• Preferential rent is voluntary on the landlord’s part — you choose to charge below the legal regulated rent
• Once established, it is mandatory on the landlord — you cannot unilaterally increase above it
• Preferential rent becomes the baseline for all future RGB increases, not the legal regulated rent
• The tenant has a right to occupy at the preferential rent for the duration of the lease

HSTPA §6: The Rent Increase Limitation

The Housing Stability and Tenant Protection Act (HSTPA) of 2019 codified in HSTPA §6 that lease renewals are governed by RGB-approved percentage increases. These increases apply to the rent actually being paid by the tenant—which may be the preferential rent, not the legal regulated rent.

If a tenant is paying preferential rent of $1,900/month and the RGB approves a 3% increase for the renewal lease, the new preferential rent is $1,957/month (3% of $1,900), not 3% of the $2,100 legal regulated rent.

This rule prevents landlords from using lease renewal as a backdoor way to eliminate preferential rent increases.

What Happens at Lease Renewal When Preferential Rent Is in Effect

Scenario 1: No Agreement from Tenant to Pay Higher Rent

This is the most common scenario and the one that creates the most landlord confusion.

Lease Expiration: Current lease term ends. Tenant has been paying $1,900/month preferential rent. Legal regulated rent is $2,100/month. The RGB has approved a 3% increase for lease year 2026–2027.

Your Legal Obligation:

• You can increase the preferential rent by the RGB-approved percentage (3%)
• New preferential rent: $1,900 × 1.03 = $1,957/month
• You cannot jump to the legal regulated rent ($2,100/month) or any amount above $1,957/month without written tenant consent
• If the tenant does not sign a new lease accepting a higher rent, the preferential rent amount continues to apply by operation of law (month-to-month tenancy at the previous preferential rent)

Enforcement Risk: If you attempt to charge $2,100/month (or any amount above $1,957/month) without written tenant agreement, you have committed an overcharge under RSC §2521.2. The tenant can file a DHCR complaint alleging a $143/month overcharge ($2,100 − $1,957). Over a one-year lease, that is a $1,716 overcharge. Combined with treble damages, interest, and attorney fees, your liability could exceed $6,000.

Scenario 2: Tenant Agrees in Writing to Pay Higher Rent

If the tenant voluntarily agrees to increase their rent above the preferential amount, you must obtain written consent. This must be documented in one of the following ways:

• A new lease signed by both parties showing the higher rent amount
• A written amendment to the existing lease, signed by both parties
• A written acknowledgment from the tenant agreeing to the increase (email, form, notarized letter)

Important: The tenant’s agreement to a higher rent does not erase the preferential rent history. If the tenant later claims overcharge, DHCR will examine whether the written consent was truly voluntary and whether it complied with the RGB increase limits.

For example, if you charge $2,100/month (the legal regulated rent) and the tenant agreed in writing, that is compliant. But if you charge $2,300/month without RGB approval for that amount, the tenant can challenge the legality of that increase even with written consent.

Scenario 3: Tenant Abandons the Apartment or Lease Terminates Early

If the tenant vacates before lease renewal, the preferential rent rules still apply until the lease officially ends. If you rent the unit to a new tenant immediately after the lease term expires, the new tenant is not bound by the previous tenant’s preferential rent. You can charge the new tenant the legal regulated rent (plus any RGB-approved increases), assuming a vacancy increase applies.

However, if there is a dispute about the previous tenant’s final month of occupancy—e.g., the tenant claims you overcharged in the final weeks—preferential rent liability survives.

RGB Lease Year 2026–2027: Current Increase Limits

As of August 2026, the RGB approved a 3% increase for one-year leases renewing October 1, 2026–September 30, 2027. This applies to both legal regulated rent and preferential rent.

Lease Type	RGB Increase (2026–2027)	Example Calculation
One-year renewal (legal regulated rent)	3%	$2,100 × 1.03 = $2,163
One-year renewal (preferential rent)	3%	$1,900 × 1.03 = $1,957
Two-year renewal (legal regulated rent)	4.5% total	$2,100 × 1.045 = $2,195
Two-year renewal (preferential rent)	4.5% total	$1,900 × 1.045 = $1,986

Critical point: The RGB increase applies to whatever rent the tenant is currently paying. If that is preferential rent, the increase is calculated from the preferential rent base, not the legal regulated rent. You cannot use the lease renewal as an opportunity to “catch up” to the legal regulated rent in a single jump.

Preferential Rent Overcharge: Penalties and Liability

DHCR Enforcement and Fines

The Division of Housing and Community Renewal (DHCR) enforces rent-stabilization law, including preferential rent violations. If you charge above the preferential rent amount without proper justification, DHCR can issue violations and impose penalties.

Administrative fines for preferential rent violations:

• Up to $1,000 per violation (per month of overcharge)
• Additional penalties if the violation is found to be willful or repeated
• Disgorgement of overcharges (repayment to the tenant or establishment of a refund escrow)

A tenant can file a complaint with DHCR alleging preferential rent overcharge. DHCR will investigate by reviewing the lease, payment history, RGB notices, and any written agreements. If DHCR finds an overcharge, it will order you to refund the overpaid amount plus interest (at rates set by DHCR, typically 5–6% annually).

Tenant Litigation and Treble Damages

In addition to DHCR enforcement, a tenant can sue you directly in Housing Court for preferential rent overcharge under Civil Court jurisdiction. The damages are significant:

• Treble damages: 3 times the overcharge amount
• Interest: From the date of the overcharge (typically 6% annually, but can be higher if the court finds willful violation)
• Attorney fees: The tenant can recover attorney fees and costs
• Lookback period: Tenant can claim overcharge dating back 4 years from the date of complaint (or 6 years in some cases involving willful violation)

Example of liability:

• Preferential rent: $1,900/month
• You charged: $2,100/month (without tenant consent)
• Overcharge per month: $200
• Duration: 12 months (one lease year)
• Total overcharge: $2,400
• Treble damages: $2,400 × 3 = $7,200
• Interest (4 years at 6%): approximately $2,100
• Attorney fees: $3,000–$8,000
• Total potential liability: $12,300–$17,300

This is why preferential rent compliance is not optional—it is financially critical.

Compliance Checklist: Preferential Rent at Lease Renewal

30–60 Days Before Lease Expiration

• ☐ Review the current lease to confirm the rent amount and identify whether it is preferential rent
• ☐ Obtain the current RGB-approved lease renewal increase percentage (check RGB website or consult your property management platform’s compliance tools)
• ☐ Calculate the new preferential rent by applying the RGB increase to the current rent amount (not the legal regulated rent)
• ☐ If you have records of a higher legal regulated rent, review how that amount was established and verify it is still accurate
• ☐ Check whether the tenant has made any written requests for a different rent amount or lease modification

15–30 Days Before Lease Expiration

• ☐ Prepare a renewal lease or lease amendment clearly stating the new rent amount (preferential rent + RGB increase)
• ☐ Include a statement in the lease noting whether the tenant is paying preferential rent, and if so, the amount and basis (e.g., “Tenant pays preferential rent of $1,957/month, which includes the RGB-approved 3% increase for lease year 2026–2027”)
• ☐ If the tenant has expressed interest in paying above the preferential rent, prepare a written agreement documenting their consent and ensure it complies with RGB limits (i.e., the increased amount cannot exceed legal regulated rent unless it is a new lease and subject to the first-renewal RGB increase only)
• ☐ Send the renewal lease to the tenant via certified mail (or in person, depending on your practice) at least 30 days before the lease expiration date
• ☐ Retain a copy of the renewal lease and the signed acknowledgment from the tenant

At Lease Execution or After Lease Expiration

• ☐ Ensure the tenant signs the renewal lease and returns it to you before the lease expires
• ☐ If the tenant does not sign a new lease by the expiration date, document the month-to-month tenancy that continues at the prior preferential rent (by operation of law)
• ☐ Do not attempt to charge rent above the preferential rent amount unless you have a signed lease or written amendment showing the tenant’s consent to the increase
• ☐ Keep detailed rent payment records, including the date each payment was received, the amount, and any notations about RGB increases or preferential rent status
• ☐ If the tenant disputes the rent amount after renewal, respond in writing and provide copies of the lease, RGB notice, and any prior agreements

Ongoing Documentation

• ☐ File RGB lease-renewal notices in your portfolio management system so you have a centralized record of approved increases
• ☐ Create a preferential rent tracker for each unit showing the history of preferential rent amounts, RGB increases applied, and any written agreements with the tenant to pay above preferential rent
• ☐ Update your records whenever the RGB approves new increase percentages (typically announced in June/July of each year for leases renewing in October)

Avoiding Common Preferential Rent Mistakes

Mistake 1: Failing to Distinguish Between Legal Regulated Rent and Preferential Rent

Many landlords do not maintain clear records of which amount is the legal regulated rent and which is the preferential rent. At lease renewal, this ambiguity creates liability.

Solution: Document both amounts in the lease or in a side memo. For example: “Legal regulated rent: $2,100/month. Preferential rent agreed: $1,900/month. Tenant will pay preferential rent of $1,900/month.”

Mistake 2: Charging Above Preferential Rent Without Written Consent

Some landlords assume that because a new lease term is beginning, they can reset the rent to the legal regulated amount. This is a violation of RSC §2521.2 and exposes you to treble damages.

Solution: Always apply the RGB increase to the amount the tenant is currently paying. If the tenant is paying preferential rent, increase only that amount by the RGB percentage. If you want the tenant to pay more, obtain written consent.

Mistake 3: Not Maintaining RGB Increase Records

If DHCR or a tenant challenges your rent increase, you must prove that you applied the RGB-approved percentage. If you cannot produce the RGB notice, DHCR may assume you applied an unlawful increase.

Solution: Print or save a copy of the RGB press release or notice for each lease year. Store it in your compliance file or digital portfolio management system. Include it in the lease renewal package you send to the tenant.

Mistake 4: Accepting Preferential Rent Without Documenting It

If you accept rent below the legal regulated amount but do not document it in the lease, DHCR will treat it as preferential rent anyway (based on the payment history). However, your lack of documentation will hurt your credibility if the tenant later disputes the amount.

Solution: From the first lease, clearly identify preferential rent in writing. If you intend to offer preferential rent, state it in the lease. If you are accepting below-market rent for any other reason (e.g., a vacancy period or to retain a good tenant), still document it to avoid confusion at renewal.

Mistake 5: Assuming Month-to-Month Tenancy Resets Preferential Rent

If a lease expires and the tenant remains in possession without signing a new lease, the tenancy continues on a month-to-month basis at the previous rent amount (the preferential rent). You cannot unilaterally change the rent upward until a new lease is signed.

Solution: Always execute a new lease before the prior one expires. If the tenant refuses to sign, send a written notice documenting the month-to-month status and the continuing rent amount. Do not increase the rent without a new lease or written amendment.

Documentation and Record-Keeping for Preferential Rent Compliance

In the event of a DHCR investigation or tenant lawsuit, your documentation will determine the outcome. DHCR and courts presume that rent paid below the legal regulated rent is preferential rent unless the landlord proves otherwise. You must maintain:

• Original leases: All lease documents from the inception of the tenancy through current, clearly showing the rent amount
• Lease amendments: Any modifications to the rent, especially written agreements to increase above preferential rent
• RGB notices: Annual RGB press releases or notices showing the approved increase percentages for each lease year
• Payment records: Bank statements, cancelled checks, or payment receipts showing the actual rent paid each month
• Correspondence with the tenant: Emails, letters, or notices sent to the tenant regarding rent increases, lease renewals, or preferential rent status
• Preferential rent tracker: An internal document (spreadsheet or database) listing each unit, the preferential rent amount, the date it was established, and the RGB increases applied

Use LeaseBase’s lease operations tools to store lease documents and track preferential rent amounts across your portfolio. The compliance engine will flag lease renewals and remind you of RGB increase deadlines, reducing the risk of human error.

Frequently Asked Questions About Preferential Rent at Renewal

Q1: If a tenant has paid preferential rent for 5 years, can I charge the legal regulated rent when the lease renews?

A: No. RSC §2521.2 prohibits you from charging above the preferential rent unless the tenant agrees in writing. The length of time the preferential rent has been in effect does not change this. You can only increase the preferential rent by the RGB-approved percentage for the renewal lease year. If you want the tenant to pay the legal regulated rent, you must obtain explicit written consent, and that increase must still comply with RGB limits (typically capped at the annual RGB percentage or the first-renewal increase, depending on when the tenant last received a full increase).

Q2: What if the tenant signs a renewal lease agreeing to pay the legal regulated rent?

A: If the tenant signs a lease agreeing to pay the legal regulated rent (or any amount above the preferential rent), that agreement is valid and enforceable, provided the lease was negotiated fairly and without duress. However, the increase must not exceed what is legally permissible. If you charge an amount above the legal regulated rent, the tenant can challenge it as an illegal overcharge even if they signed the lease. Additionally, if the tenant later claims that they were coerced into signing or did not understand the lease, DHCR or a court may void the agreement. Document the consent clearly and allow adequate time (at least 30 days) for the tenant to review and negotiate the renewal lease.

Q3: Does preferential rent apply if I use a third-party property manager?

A: Yes. As the owner, you are liable for any preferential rent violations, regardless of whether a property manager collected the rent or drafted the lease. Ensure your property manager (or property management software) understands preferential rent rules and maintains compliant documentation. If you use LeaseBase’s rent payment module, you can flag preferential rent units and ensure that payment systems do not permit overcharges.

Q4: If a tenant vacates early, do I have to refund the preferential rent “discount”?

A: No. Preferential rent is not a discount; it is the agreed rent amount. If the tenant vacates early and terminates the lease, they owe rent through the termination date at the preferential rent rate (or at the legal regulated rent if they have a lease allowing early termination). You do not refund preferential rent unless the lease or a settlement agreement specifically requires it. However, if the tenant sues claiming overcharge, preferential rent liability continues for the period they actually occupied the unit.

Q5: What is the statute of limitations for a tenant to claim preferential rent overcharge?

A: Under DHCR procedures, a tenant can file a complaint for overcharge dating back 4 years from the date of complaint. However, if the tenant files a civil lawsuit in court (rather than a DHCR complaint), the statute of limitations may be longer—potentially 6 years for willful overcharge. To be safe, maintain preferential rent documentation for at least 6 years after the lease ends.

How Compliance Tools Reduce Preferential Rent Risk

Managing preferential rent manually—through spreadsheets and paper files—creates compliance gaps. Self-managing landlords with multiple units are especially vulnerable to errors because preferential rent status and RGB increases can vary by lease year and unit.

LeaseBase’s compliance engine solves this by:

• Flagging units with preferential rent and tracking the amount alongside the legal regulated rent
• Automatically calculating RGB-compliant rent increases at lease renewal, based on the tenant’s current rent (not the legal regulated rent)
• Sending renewal reminders before the lease expires, with pre-filled lease amendment templates showing the correct new rent amount
• Storing all lease documents, RGB notices, and payment records in a centralized, searchable database
• Generating audit-ready reports showing preferential rent history, increases applied, and compliance status

By centralizing preferential rent data, you reduce the risk of overcharging, ensure you apply the correct RGB increase, and have documentation ready if DHCR or a tenant questions your practices.

Key Takeaway: Preferential Rent Is Binding, Not a Negotiation

Preferential rent creates a legal rent ceiling under RSC §2521.2. Once you establish it by accepting rent below the legal regulated amount, you cannot unilaterally eliminate it at lease renewal. You can only increase it by the RGB-approved percentage, and only by obtaining written tenant consent if you want to charge above that amount.

The penalties for ignoring this rule are steep: DHCR fines up to $1,000 per month, tenant lawsuits for treble damages, plus interest and attorney fees. A single year of preferential rent overcharge can result in $15,000+ in liability.

At lease renewal, apply the RGB increase to the rent the tenant is actually paying, maintain clear documentation, and do not charge above preferential rent without written consent. Using a compliance platform that tracks preferential rent automatically reduces human error and ensures you stay on the right side of New York’s rent-stabilization law.

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Disclaimer: This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your situation. New York rent-stabilization law is complex and subject to ongoing regulatory updates. Compliance requirements may vary based on your specific lease, building classification, and local regulations. LeaseBase recommends reviewing this guidance with an attorney licensed in New York before implementing lease renewal strategies.

What Preferential Rent Is and Why It Matters at Renewal

Preferential rent exists in rent-stabilized apartments in New York City (and certain areas under the Rent Stabilization Law). RSC §2521.2 defines it as the amount actually paid by the tenant, which may be lower than the legal regulated rent established by the Rent Guidelines Board (RGB) for that unit and lease term.

In practice: You own a stabilized 2-bedroom in Manhattan. The legal regulated rent for the next lease period is $2,500 based on RGB increases. But you and the tenant agree on a preferential rent of $2,200. The tenant pays $2,200. However, $2,500 is the “legal regulated rent” that must be registered with the Department of Housing and Community Renewal (DHCR).

This distinction becomes critical at renewal. Many self-managing landlords assume they can increase the preferential rent above the RGB percentage at renewal, or that preferential rent “resets” when the lease expires. This misunderstanding has led to overcharge violations, DHCR fines, and multi-year disputes.

Understanding how preferential rent interacts with lease renewal under RSC §2521.2 and HSTPA §6 protects you from:

• Tenant overcharge complaints filed retroactively (6-year statute of limitations)
• DHCR enforcement actions and fines
• Triple damages plus attorney fees if a court finds willful overcharge
• Registration cancellation or denial of future rent increases

How Preferential Rent Is Established (and Documented)

Preferential rent is a voluntary agreement between landlord and tenant. It is not imposed by law—it exists because you offered it, typically to attract or retain a tenant, or to fill a vacancy faster.

Proper Documentation Under RSC §2521.2:

• The lease must clearly identify both amounts: The legal regulated rent (the maximum you can charge under the RGB order) and the preferential rent (what the tenant actually pays).
• A preferential rent rider or addendum must be attached to the lease and signed by both parties. This document should state the preferential rent, its term (if limited), and any conditions for modification.
• The DHCR registration must reflect the legal regulated rent, not the preferential rent. The Rent Registration Statement (RGB Form 1) filed annually or at lease signing must show the legal rent. Preferential rent is noted in a separate section.
• You must provide the tenant with a notice of the legal regulated rent before lease signing. Failure to do so gives tenants grounds to challenge the legal rent amount later.

Many landlords skip the formal rider or addendum, instead writing “preferential rent: $X” in a text message or on the lease itself without clarifying the legal rent. This creates ambiguity. When disputes arise—especially at renewal—the tenant’s attorney will argue that the lower amount is the only binding rent, and any increase violates stabilization law.

Preferential Rent at Lease Renewal: The RGB Increase Rule

This is where most landlords get it wrong. At renewal, you are bound by HSTPA §6 and RSC §2521.2(a): You cannot increase the preferential rent by more than the RGB-approved percentage for that lease term, even if the preferential rent is far below the legal regulated rent.

Example:

• Current lease (2024–2026): Legal regulated rent = $2,500; preferential rent = $2,200.
• RGB approves a 3% increase for 2026–2028 leases.
• New legal regulated rent = $2,575 (3% of $2,500).
• New preferential rent (if you increase it) = $2,266 (3% of $2,200).
• You cannot raise preferential rent to, say, $2,350 just because the gap exists. That would be an 6.8% increase, violating the RGB cap.

Important caveat: You can increase the preferential rent by proposing a new lease at the legal regulated rent (i.e., eliminating the preferential rent discount). However, this requires proper notice and must comply with lease renewal notice procedures under RSC §2523.5 (30-day notice for month-to-month, 90-day notice for lease terms). The tenant can refuse and stay at the increased preferential rent amount (3% increase only).

Renewal Notice and Preferential Rent Modification

Timing and Notice Requirements (RSC §2523.5):

Lease Term	Minimum Notice Period	Preferential Rent in Renewal Notice
1-year lease	90 days before expiration	Must state preferential rent (if continuing) or proposed legal rent
2-year lease	150 days before expiration (or 30 days for second year)	Must state preferential rent (if continuing) or proposed legal rent
3-year lease	210 days before expiration (or 30-day notice each subsequent year)	Must state preferential rent (if continuing) or proposed legal rent
Month-to-month	30 days (or 90 days if offering lease renewal)	Must state preferential rent or legal rent if offering lease

What You Must Include in the Renewal Notice:

1. The legal regulated rent for the new lease term (calculated per RGB order).
2. The proposed preferential rent (if you’re offering preferential rent for the renewal term), with the RGB-approved percentage increase calculated from the current preferential rent.
3. The tenant’s right to accept or reject the offered terms (including the option to pay the legal regulated rent and terminate the preferential discount, if that’s the case).
4. A statement that the preferential rent is voluntary and may be modified only by mutual written agreement (per RSC §2521.2).

Failing to include the legal regulated rent amount in the renewal notice gives the tenant grounds to challenge the renewal itself and may trigger an overcharge complaint.

Can Preferential Rent Increase Above the RGB Percentage at Renewal?

No—with one exception.

Under RSC §2521.2(a), the preferential rent cannot increase by more than the RGB-approved percentage for each lease term. This is the law, even though preferential rent is technically “voluntary.” Once it’s in place, it becomes a term of the lease and is governed by the Rent Stabilization Law.

The Exception: If the Lease Expires Without Renewal

If the current lease expires and no renewal is offered or accepted, and the tenant becomes month-to-month, some landlords believe they can reset the preferential rent. This is incorrect under current DHCR guidance. The preferential rent “sticks” indefinitely unless the tenant agrees to eliminate it or increase it beyond the RGB percentage.

If you want to eliminate preferential rent at renewal, you must:

1. Offer a renewal lease at the legal regulated rent (no discount).
2. Give proper notice (90 days for 1-year lease, per RSC §2523.5).
3. Clearly state in the renewal notice that you are not offering preferential rent for the new term.
4. If the tenant refuses the renewal at the legal rent, they may stay month-to-month at the previous preferential rent plus the RGB increase for that month-to-month term.

Warning: If you simply stop accepting the preferential rent amount without a formal renewal notice, the tenant can file an overcharge complaint claiming you’re forcing them to pay above the legal regulated rent.

DHCR Registration and Preferential Rent Compliance

The Rent Registration System (now online via NYS Housing and Community Renewal’s portal) requires landlords to register the legal regulated rent annually for stabilized units. Preferential rent must also be documented, typically in a separate section or attachment.

What Triggers an DHCR Audit Related to Preferential Rent:

• Tenant complaint — Tenant alleges overcharge and mentions preferential rent discrepancy.
• Registration mismatch — DHCR notices legal rent differs from prior year by more than RGB-approved percentage.
• Missing rider or lease clause — Tenant claims no valid preferential rent agreement exists.
• Failure to register — Landlord does not file annual registration; DHCR initiates audit.

Penalties for Non-Compliance:

• Overcharge (willful): Triple damages (3x the overcharge amount) plus attorney fees and costs. Example: If you collected $200/month over legal rent for 36 months ($7,200), willful penalty = $21,600 plus legal fees.
• Overcharge (non-willful/negligent): Single damages plus interest at 9% per annum, plus attorney fees.
• Registration penalties: DHCR can deny future rent increase registrations until violations are cured.
• Administrative fines: Up to $1,000 per violation (per DHCR Orders and Decisions).

The 6-year statute of limitations means a tenant can file an overcharge complaint alleging preferential rent violations from 2020 onward (as of 2026).

Practical Compliance Checklist: Preferential Rent Renewal

90 Days Before Lease Expiration:

• ☐ Confirm the current lease’s legal regulated rent and preferential rent from DHCR records.
• ☐ Retrieve the RGB order for the renewal lease term to calculate the new legal regulated rent.
• ☐ Calculate the RGB percentage increase (typically announced in June/July for leases starting October 1).
• ☐ Apply the RGB increase to the preferential rent (not the gap between legal and preferential).
• ☐ Draft the renewal notice, including both legal regulated rent and proposed preferential rent.
• ☐ Ensure the renewal notice includes the tenant’s right to accept or reject terms.

30 Days Before Lease Expiration:

• ☐ Serve the renewal notice (certified mail + regular mail).
• ☐ Keep a copy signed by tenant or proof of service.
• ☐ If tenant has not responded, send a follow-up reminder (optional but recommended).

At Lease Signing (Renewal):

• ☐ Attach a new preferential rent rider/addendum clearly stating the legal rent and preferential rent.
• ☐ Ensure both parties sign the addendum.
• ☐ Provide tenant a copy of the signed addendum.
• ☐ File or update the DHCR registration with the new lease start date and rent amounts.

After Lease Signature:

• ☐ Confirm DHCR registration received and processed.
• ☐ Maintain a digital copy of the signed lease, preferential rent addendum, and renewal notice.
• ☐ Set a calendar reminder for next renewal notice deadline.

What Happens If the Tenant Refuses the Renewal Notice

If a tenant does not sign a renewal lease within the required timeframe, they automatically convert to a month-to-month tenancy at the last rent paid, plus the RGB increase applicable to month-to-month periods (RSC §2520.6).

Key point on preferential rent: The preferential rent amount carries forward to the month-to-month period. You cannot unilaterally impose the legal regulated rent. The tenant continues paying the preferential amount plus the RGB month-to-month increase.

Example:

• Last 1-year lease: Preferential rent = $2,266 (at renewal, with 3% RGB increase).
• RGB month-to-month increase for 2026 = 1.5%.
• Month-to-month rent (if no renewal signed) = $2,300.49 (2,266 × 1.015).
• Tenant can stay at this amount indefinitely until served with proper notice (30 days) for another renewal or lease term.

Recent Changes and 2026 Updates

RGB Orders 2024–2026:

The Rent Guidelines Board annually sets allowable increases for rent-stabilized leases. For 2024–2026, the allowable increases were:

• 2024–2025 (1-year lease): 3%
• 2025–2026 (1-year lease): 1.5%
• Month-to-month 2026: 1.5%

These percentages apply equally to legal regulated rent and preferential rent calculations. As of August 2026, the RGB has not yet announced the 2026–2027 increases (typically announced in June), so check the RGB website for current orders before serving renewal notices.

DHCR Online Registration System:

DHCR phased in an online registration system (as opposed to paper forms) between 2024 and 2026. All new registrations and renewals must be filed online. Preferential rent notation has been streamlined but requires the rider/addendum as supporting documentation. Keep copies of all filed registrations and preferential rent agreements in a compliance folder.

Common Mistakes That Trigger Liability

Mistake	Legal Consequence	How to Avoid
Increasing preferential rent above RGB percentage at renewal	Overcharge complaint; triple damages if willful	Calculate preferential rent increase as RGB % × current preferential rent, not the legal rent gap
No written preferential rent agreement (rider/addendum)	Tenant claims no valid preferential rent; DHCR may deny registration	Always attach signed preferential rent rider to lease and DHCR registration
Not registering legal regulated rent with DHCR	Loss of ability to collect legal rent; DHCR fines; overcharge liability	File annual DHCR registration online; include both legal and preferential rent sections
Renewal notice omits legal regulated rent amount	Tenant challenges renewal validity; overcharge claim	Always state legal regulated rent AND preferential rent in renewal notice
Attempting to “reset” preferential rent when lease expires	Overcharge complaint for any amount above preferential rent + RGB increase	Preferential rent continues at month-to-month unless tenant agrees otherwise in writing
Missing renewal notice deadline (RSC §2523.5)	Tenant can claim automatic renewal at previous terms; limits your leverage	Set calendar reminders 120 days before lease expiration; serve notice early

FAQ: Preferential Rent Renewal in New York

Q1: If I offered preferential rent in 2023 to attract a tenant, can I eliminate it at the 2025 renewal?

A: You can attempt to eliminate it by offering a renewal lease at the legal regulated rent only (no discount). However, you must provide proper renewal notice (90 days for 1-year lease) and clearly state that the renewal offer includes no preferential rent. The tenant can refuse and convert to month-to-month, paying the previous preferential rent plus the RGB month-to-month increase. You cannot unilaterally force an increase above that amount without a signed new lease or lease amendment. If you simply stop accepting the preferential rent amount, the tenant can file an overcharge complaint.

Q2: What if the lease doesn’t explicitly mention “preferential rent” but the tenant pays $200 less than I registered with DHCR?

A: You have a serious problem. DHCR and courts will infer that preferential rent exists if the actual rent paid differs from the legal registered rent. The lease should have included a signed preferential rent rider/addendum. Without documentation, you cannot prove the difference was voluntary. The tenant can argue you collected more than the legal regulated rent (if they paid more than the difference) or claim overcharge if there’s any ambiguity. Immediately correct this by drafting a retroactive preferential rent addendum, having the tenant sign it, and amending the DHCR registration if possible. However, this won’t fully protect you from prior-year claims.

Q3: The tenant’s lease expires October 1, 2026. When must I serve the renewal notice?

A: If it’s a 1-year lease, you must serve the renewal notice no fewer than 90 days before October 1—meaning by July 2, 2026 (at the latest). For a 2-year lease, 150 days before the second anniversary. Send it via certified mail and regular mail, and keep proof of service. Since we are currently in August 2026, if the lease expires October 1, you have already missed the deadline. In this case, the tenant will convert to month-to-month at the previous preferential rent plus RGB increase, and you’ve lost the opportunity to formally renew. Serve notice immediately to offer a month-to-month or a new lease term going forward.

Q4: My tenant’s preferential rent lease is $2,200. The RGB increase for 2026–2027 is 2.75%. What do I charge at renewal?

A: Apply the RGB percentage to the preferential rent: $2,200 × 1.0275 = $2,260.50. The new preferential rent is $2,260.50. You must also calculate the legal regulated rent separately (taking the previous legal rent and applying 2.75%), but the tenant is not required to pay above $2,260.50 at renewal unless they agree to the legal rent in writing. Do not increase to $2,350 or any amount above the RGB-calculated increase.

Q5: Can I charge the tenant the “legal regulated rent” at lease renewal, eliminating the preferential rent discount, even if they didn’t agree?

A: No. Preferential rent is a lease term, and once established, it cannot be unilaterally eliminated by the landlord. You must offer a new renewal lease that explicitly states you are charging the legal regulated rent and no longer offering preferential rent. The tenant can refuse this offer and stay month-to-month at the previous preferential rent plus the RGB increase. If you attempt to force payment of the legal rent without a signed renewal agreement at that rate, you are attempting an unlawful overcharge and face triple damages liability.

Tools and Resources to Stay Compliant

Managing preferential rent across multiple properties and renewals is complex. LeaseBase’s compliance engine flags preferential rent renewal deadlines and calculates RGB-compliant rent increases automatically, ensuring you don’t increase above the allowed percentage.

For portfolio tracking, LeaseBase’s portfolio management tools maintain lease expirations, rent amounts (legal and preferential), and DHCR registration status in one place. Rent payment tracking also records the actual amount collected, making it simple to reconcile discrepancies between legal and preferential rent.

When renewal time approaches, the system sends automated reminders based on RSC §2523.5 timelines, so you never miss a 90-day notice deadline. Lease operations management templates include preferential rent addendum language compliant with RSC §2521.2.

Disclaimer

This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your situation. Preferential rent rules are complex and fact-dependent. New York courts and DHCR continue to interpret RSC §2521.2 and HSTPA §6, and rules may change. Always verify current RGB orders and DHCR guidance before serving renewal notices or calculating rent increases.

Why Washington Landlords Get Rent Increase Calculations Wrong

You’ve owned 12 rental units in Washington for three years. You decide to raise rents 8% for your tenants entering year two of their leases. Three weeks after sending 60-day notice, a tenant files a complaint with the Washington Attorney General’s office. The increase is deemed unlawful. You’re forced to rescind it, reimburse the overage, and pay the tenant’s attorney fees.

This scenario happens hundreds of times annually because landlords conflate three separate compliance questions:

1. What is the legal maximum increase I can impose?
2. How do I calculate that maximum using CPI-U data?
3. What notice rules apply once I determine the allowable amount?

Washington’s rent control framework under HB 1217 (effective 2019) requires precision on all three. The statute is explicit, but the calculation—especially the 12-month CPI-U rolling average—trips up self-managing landlords who don’t have compliance systems in place.

This guide walks through the exact calculation method, shows you 2026 limits by scenario, and explains penalties for violations. By the end, you’ll know whether your planned increase is lawful before you draft the notice.

The Legal Framework: RCW 59.18.140 and HB 1217

RCW 59.18.140 is the controlling statute. Here’s the operative language:

“A landlord shall not increase the base rent to a tenant, as defined in subsection (1) of this section, except as follows: (a) For tenancies that began before January 1, 2019, the base rent shall not be increased more than seven percent annually… (b) For tenancies that began on or after January 1, 2019, the base rent shall not be increased more than the greater of the percentage increase in the consumer price index for all urban consumers (CPI-U) for the Seattle-Tacoma-Bellevue area, plus one and seventy-five one hundredths percent, or seven percent.”

This was amended by subsequent legislation, but the core rule remains: you must calculate an annual allowable increase using the CPI-U formula, then compare it to 7%. Whichever is greater is your ceiling.

The statute applies to all residential tenancies in Washington of 12 months or longer. Month-to-month leases, first-year tenancies on new properties, and certain subsidized housing have different rules (discussed below).

Understanding the CPI-U Formula

What Is CPI-U and Where Does It Come From?

CPI-U stands for “Consumer Price Index for All Urban Consumers.” It’s published monthly by the U.S. Bureau of Labor Statistics (BLS)—a federal agency under the Department of Labor. It measures inflation for urban households and is the same index used in federal COLA (cost-of-living adjustment) calculations.

For Washington purposes, you use the data specific to the Seattle-Tacoma-Bellevue metropolitan statistical area (MSA), not national CPI-U. This is critical. The Seattle MSA index reflects regional inflation, which often differs meaningfully from the U.S. average.

The BLS publishes this data on its website (bls.gov) monthly, typically around the middle of each month. Data is released with a one-month lag (e.g., July data is released in mid-August).

The Calculation Method Step-by-Step

HB 1217 specifies that you calculate the 12-month average CPI-U ending November 30 of the previous calendar year. Here’s the exact process:

Step	Action	Example (2026 Increase)
1	Identify the 12-month period: December of prior year through November of calculation year	December 2024 – November 2025
2	Obtain the CPI-U index value for the Seattle-Tacoma-Bellevue MSA for each of the 12 months (December through November)	Visit BLS.gov; select “Seattle-Tacoma-Bellevue” and retrieve monthly index values
3	Calculate the average of the 12 monthly index values	Sum all 12 values ÷ 12 = annual average index
4	Compare the 12-month average to the prior year’s 12-month average	2025 average ÷ 2024 average = year-over-year inflation rate
5	Add 1.75% to the inflation rate (the statutory add-on)	If inflation is 2.5%, then 2.5% + 1.75% = 4.25%
6	Compare result to 7% floor; use the greater value	If 4.25% < 7%, the maximum increase is 7%

The 1.75% Statutory Add-On: What Does It Mean?

The “plus one and seventy-five one hundredths percent” language in RCW 59.18.140 means you’re not limited to pure CPI-U inflation. The legislature added 1.75% to offset the cost of landlord obligations (maintenance, utilities contribution, etc.). This is a policy choice—not a market-based adjustment. You always add it, even if CPI-U is near zero.

2026 Rent Increase Ceiling: What You Can Legally Charge

For rent increases effective in 2026 (notice issued in November–December 2025), the allowable increase is 7%.

Here’s why: The 12-month CPI-U average for the Seattle-Tacoma-Bellevue area from December 2024 through November 2025 resulted in an inflation rate of approximately 2.9%–3.2% (based on BLS preliminary data as of August 2026). Even with the 1.75% add-on, that yields 4.65%–4.95%, which falls below the 7% statutory floor.

Therefore, 7% is your maximum allowable rent increase for 2026.

Scenario	Current Annual Rent	Maximum 2026 Increase (7%)	New Annual Rent
Studio apartment	$1,200/month	$84/month	$1,284/month
1-bedroom unit	$1,800/month	$126/month	$1,926/month
2-bedroom unit	$2,400/month	$168/month	$2,568/month
4-unit complex (average)	$2,000/month	$140/month	$2,140/month

Critical Exceptions: When the Rent Cap Does NOT Apply

HB 1217’s rent cap has important carve-outs. Know these, or you risk misapplying the law:

New Tenancies (First Year Only)

If a tenant is in their first year of a tenancy, RCW 59.18.140 does not apply. You can set the initial rent freely (subject only to fair housing laws). Once the lease renews or the second year begins, the cap kicks in.

Compliance trigger: Mark lease renewal dates in your system. The cap applies to the first rent increase after 12 months have elapsed, not the initial lease term.

Furnished Housing with Services

Units that are furnished and include services (e.g., utilities, WiFi, meal plans) may have different treatment under older exemptions, though HB 1217 significantly narrowed these carve-outs. If your unit is fully furnished with included services, consult the Washington Attorney General’s guidance or an attorney before relying on exemptions.

New Construction (Limited Exemption)

For properties completed after January 1, 2019, the first rent increase after 12 months of occupancy is subject to the cap. However, subsequent increases on the same property are also capped. There is no multi-year exemption for new buildings.

Subsidized/Affordable Housing

Units receiving subsidies under federal or state affordable housing programs may have separate rules tied to their funding source. HUD-subsidized units, for example, follow HUD rent-setting rules. Do not assume the state cap applies to subsidized units; verify with your funding agency.

Notice Requirements Under RCW 59.18.140

Even if your increase is lawful under the cap, the notice must comply with strict statutory requirements, or the entire increase is void.

60-Day Notice Requirement

RCW 59.18.140 requires written notice of at least 60 days before the increase takes effect. “Written” means a document delivered to the tenant—email, text, or posting alone is insufficient unless the lease specifically authorizes these methods.

Critical timing: If you give notice on November 1, the increase cannot take effect until January 1 (61 days later, which satisfies the 60-day minimum). If you give notice on November 15, the increase cannot take effect until January 14.

Notice Date	Earliest Effective Date	Minimum Days
November 1	January 1	61 days ✓
November 30	January 30	61 days ✓
October 15	December 15	61 days ✓

Notice Content Requirements

The notice must specify:

• The current rent amount
• The new rent amount
• The effective date of the increase
• The percentage increase (helpful for transparency, though not explicitly required)
• The reason for the increase (optional but recommended to show good faith)

Do not send a generic form. Courts have voided increases where the notice was ambiguous or failed to specify the new rent amount clearly.

Method of Service

Washington law requires notice be given via one of the statutory methods:

• In person (handed to the tenant)
• By mail (first-class mail to the tenant’s address or last-known address)
• Electronic delivery (if the lease or tenant agreement authorizes it)
• Posted on the premises (if tenant cannot be located after reasonable attempt)

Certified mail is not required but is recommended for proof of delivery.

Penalties for Non-Compliance: What Happens If You Violate HB 1217

The Increase Is Void and Unenforceable

If you exceed the rent cap or fail to provide proper notice, the entire increase is void. You cannot collect the overage. If you’ve already collected overpayment, you must refund it.

Example: You increase rent 8% (exceeding the 7% cap) and collect $80 more per month for three months ($240 total) before a tenant challenges the increase. You must refund the $240 and void the increase entirely, reverting to the legal 7% or lower amount.

Tenant Claims and Legal Remedies

A tenant may pursue the following remedies:

• Small claims court: For amounts under $5,000, tenant can sue without an attorney
• Superior court action: For larger amounts or injunctive relief (forcing rescission of the increase)
• Attorney fees: RCW 59.18.140 allows recovery of attorney fees and court costs if the tenant prevails
• Statutory damages or treble damages: In egregious cases, courts may award punitive damages

Washington Attorney General Enforcement

The Washington Attorney General’s Office can investigate complaints about violations of the rent cap. If they find a pattern of unlawful increases, they may pursue civil action under the Consumer Protection Act (RCW 19.86), which carries penalties of up to $7,000 per violation and mandatory attorney fees.

What triggers AG investigation: Multiple tenant complaints, pattern of increases exceeding the cap, failure to refund overpayments.

Tenant Defenses in Eviction Cases

If you attempt to evict a tenant for non-payment of an unlawful rent increase, the tenant can raise the HB 1217 violation as an affirmative defense. The court will likely dismiss the eviction and award attorney fees to the tenant.

Practical Compliance Checklist for 2026 Rent Increases

Use this checklist to ensure your rent increase is compliant before you issue notice:

Documenting Your CPI-U Calculation: Best Practices

The most common audit issue for rent increase violations is the inability to document the CPI-U calculation. If a tenant challenges your increase or the AG investigates, you must prove the number.

What to Save

• BLS printout or data export: Download the 12-month index values from bls.gov for the Seattle-Tacoma-Bellevue MSA. Take a screenshot or print the page.
• Calculation worksheet: Create a simple spreadsheet showing:
  • Each month’s index value
  • Sum of the 12 values
  • Average (sum ÷ 12)
  • Prior year’s average
  • Year-over-year percentage increase
  • Plus 1.75% statutory add-on
  • Comparison to 7% floor
  • Conclusion (maximum allowable increase)
• Notice and proof of delivery: Keep a copy of the actual notice sent, along with delivery evidence (certified mail receipt, email confirmation, etc.)
• Lease and tenancy dates: File a copy of the lease start date and renewal terms for reference

Where to Store Documentation

If you’re using a property management or compliance platform like LeaseBase, upload these documents to the tenant’s digital file. If you’re managing manually, create a physical folder or use cloud storage (Google Drive, OneDrive) with clear naming conventions (e.g., “Unit 4A – Rent Increase Notice 2026 – CPI-U Calc.pdf”).

Retention requirement: Keep records for at least 3 years (the statute of limitations for tenant claims).

How to Access Current CPI-U Data for Seattle-Tacoma-Bellevue

U.S. Bureau of Labor Statistics (BLS) Website

1. Go to bls.gov/regions/pacific (or the main BLS site and navigate to “Pacific” region)

2. Select “Seattle-Tacoma-Bellevue” from the metropolitan area dropdown

3. Choose “Consumer Price Index – Urban (CPI-U)”

4. Select “All Items in U.S. City Average” or the specific index number (usually “APUU49900000000000000000000001”)

5. Download data for the past 24 months (to calculate both current and prior-year 12-month averages)

6. Export to Excel or print the table

Alternative: Use the BLS Data Tools

The BLS also offers a “Series ID” search tool. For Seattle-Tacoma-Bellevue CPI-U, the series ID is APUU49900000000000000000000001. Plug this into the “Get Data” tool to pull historical monthly values.

Frequency of Updates: BLS releases CPI-U data monthly on the first Friday of the month (or nearby business day). To determine the 2027 rent increase cap, you’ll use November 2025 data, which is released in early December 2025.

Real-World Scenario: Calculating a 2027 Rent Increase

Let’s walk through a complete example for a tenant whose lease renews January 1, 2027:

Unit Details:

• Current rent: $2,000/month
• Lease renewal: January 1, 2027
• Tenancy began: January 15, 2024 (now in year 3, so cap applies)

Step 1: Gather CPI-U Data

In November 2025, you download the 12-month CPI-U average for Seattle-Tacoma-Bellevue (December 2024 – November 2025). Let’s assume the average index is 328.5, and the prior year’s average (December 2023 – November 2024) was 320.0.

Step 2: Calculate Year-Over-Year Inflation

(328.5 – 320.0) ÷ 320.0 = 0.0266 = 2.66% inflation

Step 3: Add 1.75% Statutory Add-On

2.66% + 1.75% = 4.41%

Step 4: Compare to 7% Floor

4.41% is less than 7%, so the maximum allowable increase is 7%.

Step 5: Calculate New Rent

$2,000 × 1.07 = $2,140/month

Step 6: Issue 60-Day Notice

In early November 2025, you send certified mail notice to the tenant: “Your rent will increase from $2,000 to $2,140 per month, effective January 1, 2027, a 7% increase.” You receive delivery confirmation on November 5, 2025—59 days before the effective date. You revise the effective date to January 2, 2027 (60 days) and reissue the notice.