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What Oregon's Rent Increase Cap Actually Means

On January 1, 2017, Oregon became one of the first states to impose a statewide rent control measure when SB 608 took effect. The law created ORS 90.323, which caps annual rent increases at 7% plus the percentage increase in the Consumer Price Index (CPI-U). This is not a hard 7% cap—it's a floor combined with inflation.

For example, if the CPI-U increases 3.2% in a given year, the allowable rent increase is 7% + 3.2% = 10.2%. If CPI rises 5%, the cap is 12%. If CPI declines (deflation), the cap remains at the statutory 7% minimum. This annual recalculation means you cannot simply apply last year's cap to this year's increase.

The law applies to all rental housing in Oregon except a narrow set of exemptions. Most self-managing landlords with 2-75 units fall squarely under this requirement, regardless of property age, property type, or neighborhood. The burden is on you to know the law, calculate correctly, and document compliance.

Understanding the 7% + CPI Formula

How the Calculation Works

The formula is straightforward on its face but requires precision in execution:

Allowable Rent Increase = 7% + (Current Year CPI-U% – Prior Year CPI-U%)

The CPI-U referenced in the statute is the Consumer Price Index for All Urban Consumers published by the U.S. Bureau of Labor Statistics. Oregon uses the annual average CPI for the U.S. city average, not regional or Portland-specific indices.

Here's a practical example:

• Prior year (2025) CPI-U average: 3.8%
• Current year (2026) CPI-U average: 4.2%
• CPI increase: 4.2% − 3.8% = 0.4%
• Allowable rent increase: 7% + 0.4% = 7.4%
• Current rent: $1,500/month
• Maximum new rent: $1,500 × 1.074 = $1,611

The Oregon Department of Consumer and Business Services publishes the CPI index used for rent increase calculations each year, typically by mid-January. Many landlord organizations and compliance platforms (such as LeaseBase's compliance tools) track this data and update their systems automatically.

The 7% Floor Matters

Even if CPI is zero or negative, you can still increase rent by 7%. This was deliberate policy. The legislature recognized that landlords face real costs that may not track perfectly with inflation, but refused to allow unlimited increases. The 7% floor is a compromise between rent stability and landlord economics.

Conversely, you cannot increase rent above the cap simply because your costs increased more than the formula allows. No "pass-through" exception exists for property taxes, insurance, or maintenance—a recurring compliance mistake.

Exemptions: Narrow and Documented

ORS 90.323(2) lists exemptions from the rent increase cap. Understanding which properties qualify is critical because claiming an exemption without legal grounds exposes you to liability.

Exemption 1: New Construction (15-Year Window)

A building is exempt from the cap for the first 15 years following completion of new construction. "New construction" means a building that was not previously occupied as a residential rental.

Compliance requirement: You must be able to document the date the building was first occupied. If a property was built in 2010, the exemption expired at the end of 2024. You cannot claim this exemption simply because the building is "newer."

What "first occupied" means: The statute does not require the building to be occupied as a rental from day one—it means first occupied as a residence. If you constructed a building in 2012 and held it vacant until 2015, the 15-year clock started in 2015, not 2012.

Exemption 2: Substantial Repairs or Capital Improvements

A landlord may increase rent above the cap if the increase is tied to costs of substantial repairs or capital improvements. This exemption is frequently misused by landlords and heavily disputed by tenants and enforcement agencies.

Statutory requirement (ORS 90.323(2)(b)): The increase must be "necessary to recover the costs of substantial repairs or capital improvements made or to be made to the premises." The statute does not define "substantial," creating ambiguity and litigation risk.

Key limitations:

• The increase must be tied to actual, documented costs
• Routine maintenance and repairs do not qualify (e.g., repainting, floor waxing, HVAC service)
• The improvement must add value to the property or prevent deterioration
• You must provide detailed notice explaining the repairs and the cost basis for the increase
• Tenants have a right to request documentation and verification

Examples that might qualify: roof replacement, foundation repair, major electrical system upgrade, seismic retrofit, new HVAC system, kitchen or bathroom renovation, siding replacement.

Examples that do not qualify: painting, carpet cleaning, gutter cleaning, standard maintenance repairs, minor plumbing fixes, replacing light fixtures.

Compliance best practice: Obtain written estimates from licensed contractors documenting the scope and cost of work. Retain invoices, receipts, and work permits. Before increasing rent under this exemption, provide the tenant with detailed written documentation of the work and cost breakdown.

Exemption 3: Buildings with Four or Fewer Units (Limited)

ORS 90.323(3)(a) provides a limited exemption for buildings with four or fewer units if the landlord owns fewer than 10 such buildings statewide and does not own any other residential rental property in Oregon.

This exemption is narrow: it applies only if you meet all of these conditions:

• The building has 4 or fewer rental units
• You own no more than 9 other buildings of 4 or fewer units
• You own no other residential rental property in Oregon (this means no apartments, condos, or other rentals)
• You occupy at least one unit in the building as your primary residence

If you own a duplex, a fourplex, and a single-family rental house, you exceed the exemption threshold and are covered by the cap. If you own two fourplexes and occupy one unit as your primary home, you may be covered. The calculation is strict and the burden is on you to verify eligibility.

No exemption for rental market rates, demand, or landlord discretion. You cannot increase rent above the cap because the market will bear it, because a tenant can afford more, or because you simply choose to. Doing so violates ORS 90.323 and creates liability.

The 90-Day Notice Requirement

When Notice Must Be Provided

ORS 90.323(1) requires that you provide written notice of a rent increase at least 90 days before the effective date of the increase. This is a hard deadline, not a guideline.

Practical timeline:

• To increase rent effective January 1, notice must be provided by October 3 of the prior year
• To increase rent effective April 1, notice must be provided by January 1
• To increase rent effective your standard lease renewal date, count back 90 calendar days

Notice provided fewer than 90 days in advance is ineffective. The rent increase does not take effect, and the tenant is entitled to challenge the increase as improper. Some courts have held that a landlord who attempted to impose a rent increase with insufficient notice cannot cure the defect by re-issuing notice later.

What the Notice Must Include

Oregon law does not specify exact language required in the rent increase notice, but courts and the Attorney General have held that notice must include:

• The current rent amount
• The new rent amount
• The effective date of the increase
• A clear statement that the increase complies with ORS 90.323 (if it does)
• If claiming an exemption, documentation or explanation of the exemption basis

Best practice: Provide notice in writing, signed by you or your authorized agent, and delivered or mailed in compliance with service requirements in ORS 90.155. Keep a dated copy for your records. Many landlords and compliance platforms use certified mail or email with read receipt to document delivery and timing.

If the rent increase exceeds the statutory cap or is not preceded by 90 days' notice, tenants can refuse to pay the increase. Attempting to evict a tenant for non-payment of an illegal rent increase is itself unlawful and can result in a wrongful eviction claim.

Calculating Your 2026 Rent Increase Cap

For rent increases effective January 1, 2026, the calculation uses CPI data released in late 2025. The Oregon Department of Consumer and Business Services publishes the official calculation guidance.

2025 CPI-U (January–December average): Approximately 3.4% to 3.8% (final figure released in January 2026)

2024 CPI-U (January–December average): Approximately 3.2%

Estimated 2026 cap: 7% + (3.5% − 3.2%) = approximately 7.3%

Note: This is an estimate. The precise cap depends on official CPI data released by the Bureau of Labor Statistics. Do not rely on projections. Once the official 2025 CPI is published in January 2026, recalculate using actual figures.

Many landlords automate this calculation using compliance software that tracks CPI updates and alerts when new caps are published. This reduces manual calculation errors and ensures compliance.

Penalties for Non-Compliance

Civil Liability to Tenants

A tenant who is subjected to an illegal rent increase—one that exceeds the cap or lacks proper notice—can sue the landlord for damages. ORS 90.332 provides the remedies framework:

• Actual damages: Any rent paid in excess of the lawful cap, plus interest at 6% per annum
• Attorney fees and costs: If a tenant prevails in court, the landlord must pay the tenant's legal fees and court costs
• Potential treble damages: In egregious cases, courts may award damages up to three times the amount wrongfully collected

Example: You increase rent from $1,500 to $1,650 (10% increase) when the lawful cap is 7.4% ($1,611). A tenant pays the $1,650 for 12 months ($19,800). Upon challenge, the tenant is owed the overage ($39 × 12 = $468), plus interest, plus attorney fees if the tenant retains counsel. If the tenant's attorney costs $2,500, your liability is $2,968 plus potential treble damages.

Enforcement by the Oregon Attorney General

The Oregon Department of Justice has enforcement authority over rent control violations. The Attorney General can investigate complaints, issue cease-and-desist orders, and file civil actions against landlords who systematically violate ORS 90.323.

Penalties under ORS 90.745:

• Civil penalty of up to $500 per violation
• Each illegal rent increase notice constitutes a separate violation
• If a landlord collects illegal rent, the Attorney General can seek restitution to affected tenants

While individual violations may seem minor, a pattern of non-compliance across multiple units or tenants can result in substantial aggregate penalties. A landlord with 20 units who systematically over-increases rent faces potential liability of $10,000+ in civil penalties alone, before attorney fees and tenant damages.

Eviction Risk

Attempting to evict a tenant for refusing to pay an illegal rent increase is an unlawful eviction under Oregon law. A tenant can defend against an eviction based on non-payment if the increase violated ORS 90.323. Additionally, the tenant may file a counterclaim for damages, and the court may sanction the landlord for bad faith litigation.

Common Compliance Mistakes to Avoid

Mistake 1: Using Last Year's Cap

The CPI changes annually. Applying last year's allowable increase to this year's rent is noncompliance. For example, if 2025 allows a 7.3% increase, you cannot assume 2026 allows 7.3%. You must recalculate each year.

Mistake 2: Claiming a Repairs Exemption Without Documentation

Increasing rent above the cap and simply stating "capital improvements" does not qualify. You must have invoices, contracts, or evidence of actual expenditures. Tenants and enforcement agencies will request documentation. Lack of proof undermines your claim and exposes you to a damages award.

Mistake 3: Not Accounting for CPI Declining (Negative Inflation)

If CPI decreases in a given year, the increase cap floor remains 7%, but you may feel pressure to justify an increase to tenants. If you explain the increase as tied to inflation and CPI was negative, you create a factual inconsistency that undermines credibility. Provide clear, accurate notice citing the statutory formula, not casual explanations.

Mistake 4: Insufficient Notice Timing

Providing 89 days' notice instead of 90 is non-compliance. Courts have been strict on this requirement. If you miss the 90-day window, issue corrected notice at least 90 days before the new intended effective date, or accept that the increase will be delayed.

Mistake 5: Increasing Rent Between Lease Terms Without Proper Procedure

If a tenant's lease renews on July 1 and you want to increase rent effective July 1, notice must be issued by April 2. If notice is late, the increase is invalid. The tenant's rent remains the prior amount until proper notice and a new lease term.

Mistake 6: Failing to Distinguish Between Units

If you own a four-unit building with multiple leases at different renewal dates, each unit must receive separate, timely notice for that unit's increase. You cannot issue one blanket notice for all units and apply different effective dates.

Step-by-Step Compliance Checklist

How Technology Reduces Compliance Risk

Manual rent increase tracking across multiple units and lease renewal dates is error-prone. Property management platforms like LeaseBase can reduce mistakes by:

• Auto-calculating CPI updates: When new CPI data is released, the system recalculates the allowable cap and alerts you
• Tracking lease renewal dates: The system identifies each tenant's renewal date and counts backward to alert you when 90-day notice is due
• Generating compliant notices: Templates ensure all required information is included and formatted correctly
• Maintaining documentation: Invoices, notices, and delivery proofs are centralized and timestamped for audit defense
• Audit reporting: You can generate reports showing all rent increases issued, dates, caps applied, and exemptions claimed

Rent payment systems that integrate with compliance tools also prevent tenant disputes about rent amounts by clarifying the new amount and effective date upfront.

Frequently Asked Questions

Q1: Can I Increase Rent Mid-Lease?

A: No. ORS 90.323 applies to rent increases after the lease term ends. You cannot increase rent during an active lease term unless the lease itself contains a clause permitting adjustment (which is rare and legally risky in Oregon). Rent increases take effect only upon lease renewal or at the start of a new tenancy.

Q2: What If I Provide 90 Days' Notice but the Tenant Refuses to Pay the Increase?

A: If your notice and increase comply with ORS 90.323, the tenant is legally obligated to pay the new rent amount. If the tenant refuses, you can pursue a non-payment eviction under ORS 105.105. However, the tenant can defend by arguing the increase violates the statute. If the tenant proves the increase exceeds the cap or lacked proper notice, the eviction fails and you may face sanctions for wrongful eviction.

Q3: Does the 90-Day Notice Requirement Apply If I'm Using an Exemption?

A: Yes. The notice requirement in ORS 90.323(1) applies to all rent increases, regardless of exemption. However, if you are claiming an exemption (e.g., substantial repairs), you must clearly state the exemption basis and provide supporting documentation. Failure to do so weakens your claim and may result in a court finding that no valid exemption applied.

Q4: Can I Increase Rent If My Property Taxes Increased?

A: No. Property tax increases do not create an exemption or exception to the 7% + CPI cap. Many landlords believe operating costs justify higher increases, but Oregon law does not permit this. You are limited to the statutory cap regardless of your costs.

Q5: What If a Tenant Disputes the Increase? Do I Have to Prove Compliance?

A: If a tenant challenges a rent increase in court or disputes it with the Attorney General, you bear the burden of proving compliance. Keep documentation showing: (1) the CPI figures you used, (2) the calculation, (3) the notice issued with date of delivery, and (4) any exemption documentation. Without clear records, a court may find the increase unlawful even if you believed you were compliant.

Additional Resources and Reporting Requirements

Oregon does not require landlords to report rent increases to a state agency. However, the Attorney General's office accepts complaints about alleged violations. The Consumer and Business Services Department maintains guidance on the calculation methodology.

If you manage properties in Portland, note that the City of Portland does not impose additional rent control restrictions beyond the statewide ORS 90.323 cap (as of 2026). Some discussion exists about local rules, but statewide preemption currently prevents cities from setting tighter caps.

Tenants can file complaints with the Oregon Bureau of Labor and Industries (BOLI) or the Attorney General. While BOLI's primary enforcement role covers employment law, the Attorney General actively investigates housing complaints.

Staying Current on Oregon Rent Control Law

Rent control law in Oregon continues to evolve. The legislature has considered amendments to the cap, exemptions, and enforcement mechanisms. Subscribe to updates from the Oregon Residential Landlord and Tenant Association, the Department of Consumer and Business Services, and your local real estate association to stay informed of changes.

Platforms like LeaseBase's compliance engine monitor legislative changes and update guidance automatically, so you don't have to track statutory amendments manually.

Bottom Line: Compliance is Non-Negotiable

The 7% + CPI rent increase cap is not optional or subject to landlord discretion. Violations carry real penalties: tenant lawsuits for damages and attorney fees, enforcement actions by the Oregon Attorney General, and eviction defense. The cost of compliance—proper calculation, timely notice, and documentation—is far lower than the cost of a single tenant dispute or enforcement action.

Self-managing landlords must treat rent increase compliance with the same rigor as property maintenance and lease execution. Errors are not forgivable, and courts will not excuse non-compliance based on landlord good intentions.

Disclaimer

This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney licensed in Oregon for guidance specific to your situation. Rent increase laws are complex and subject to court interpretation. LeaseBase is not a law firm and cannot provide legal counsel. Always verify current statutory requirements and CPI data before issuing rent increase notices.

What Is Evanston Rent Stabilization, and Why It Applies to Your Property

Evanston, Illinois adopted one of the most restrictive rent control ordinances in the nation when it passed rent stabilization legislation effective November 1, 2017. If you own rental property in Evanston—whether a single-family home, duplex, or small apartment complex—you are almost certainly subject to Evanston City Code Ch. 5-3 (Rental Housing Support Ordinance), unless your property qualifies for a narrow exemption.

Unlike some rent control regimes that apply only to buildings built before a certain year, Evanston's ordinance is prospective and covers all rental units occupied after November 1, 2017, with limited exceptions. This means you cannot simply raise rent to market rate when a lease renews or a tenant moves out. The city enforces strict limits on how much you can charge.

The compliance consequences are severe: tenants can sue you directly for treble damages (3x the overcharge amount) plus attorney fees, and the city can impose additional administrative penalties and loss of eviction rights. Many landlords who ignored these rules in the first few years of implementation faced substantial liability once tenant advocacy groups and legal aid organizations began enforcement.

The 5% / CPI Cap: How Much You Can Actually Raise Rent

The core requirement of Evanston's rent stabilization ordinance is in Evanston City Code § 5-3-4(a). Annual rent increases are capped at the lesser of:

• 5% of the current rent, OR
• The percentage increase in the Consumer Price Index (CPI) for the Chicago-Joliet-Gary metropolitan area (U.S. Department of Labor, Midwest region)

Since 2024, the CPI-U (Consumer Price Index for All Urban Consumers) for the Chicago metropolitan area has fluctuated between 2.8% and 4.1%. As of October 2026, you must verify the current CPI published by the U.S. Bureau of Labor Statistics before setting rent increases. The city does not calculate this for you.

Example calculation: If a tenant's current rent is $1,500/month and the CPI increase is 3.2%, your maximum allowable increase is $48/month ($1,500 × 3.2% = $48). You cannot charge $1,575 (5% increase) because 3.2% is lower. If you do, the overage of $27/month × 12 months = $324/year becomes a violation subject to treble damages ($972 plus attorney fees).

How to Calculate Your Allowable Increase: Step-by-Step

1. Obtain the most recent CPI-U figure from the Bureau of Labor Statistics (bls.gov) for the Chicago-Joliet-Gary area. The city publishes the applicable rate annually on its rental housing support website.
2. Calculate 5% of the current monthly rent. Example: $1,500 × 0.05 = $75.
3. Calculate the CPI percentage increase applied to current rent. Example: $1,500 × 0.032 = $48.
4. Use the lower number. In this example, $48 is the maximum increase. Set the new rent at $1,548/month.
5. Document your calculation in your rent increase notice and keep records for at least 3 years. This is your evidence of good-faith compliance if the city or tenant challenges the increase.

Failure to perform this calculation correctly is not an excuse. Evanston treats overshooting the CPI cap as rent overcharging, regardless of whether you knew the rule.

The 120-Day Notice Requirement: Timing That Protects You

Evanston City Code § 5-3-4(b) mandates that you must provide written notice of any rent increase at least 120 days before the increase takes effect. This is not a suggestion—it is a hard deadline with severe consequences for non-compliance.

What "120 Days" Means in Practice

The 120-day clock starts the day you deliver the notice to the tenant. Delivery can occur by:

• Hand delivery (safest—get a signature or photograph receipt)
• Certified mail, return receipt requested (creates a legal record)
• First-class mail plus email (if tenant has consented to email service)
• Personal delivery by a third party (document the date and method)

Email alone is insufficient unless your lease explicitly permits electronic notice. Many Evanston landlords have had rent increases invalidated because they emailed notice without also mailing a physical copy.

Timeline example: If you want to raise rent effective January 1, 2027, you must deliver written notice no later than September 4, 2026 (120 days prior). If you mail the notice on September 5, 2026, the rent increase is void and cannot take effect on January 1. You would need to re-notice for April 1, 2027 or later.

What the Notice Must Include

Evanston City Code § 5-3-4(b) does not specify mandatory notice language, but best practice—and litigation-proof documentation—requires you to include:

• Current rent amount and new rent amount
• The effective date of the increase (at least 120 days after notice delivery)
• Your calculation showing compliance with the 5% / CPI cap (e.g., "This increase of 3.2% is based on the Chicago CPI-U published by the U.S. Bureau of Labor Statistics")
• A statement that the tenant may contact the Evanston Rental Housing Support Center if they believe the increase violates the ordinance
• Your name, address, and contact information

Use LeaseBase's lease operations tools to generate compliant notice documents, track delivery dates, and maintain proof of service. Handwritten or improvised notices create liability because they are harder to defend in court.

Registration Requirements: You Cannot Collect Rent Without It

Before you can legally collect rent on any Evanston rental unit, you must register the property with the City of Evanston. This requirement is codified in Evanston City Code § 5-3-1(b) and is separate from the rent cap requirement. Failure to register has catastrophic consequences.

What Happens If You Don't Register

Evanston City Code § 5-3-6(a) states that if a rental unit is not registered, the tenant can withhold rent and the city can impose penalties of up to $500 per day for each day the unit remains unregistered. Additionally:

• You lose the right to evict the tenant for non-payment (the tenant's withholding is legal under the ordinance)
• The city's Rental Housing Support Center can file an administrative complaint, leading to a municipal code violation fine
• Tenants have used non-registration as a complete defense against eviction, resulting in dismissed cases and landlord attorney fee liability

The registration process is simple but mandatory:

1. Visit the City of Evanston's Rental Housing Support Center website (evanston.org) or call (847) 866-5836.
2. Complete the rental unit registration form (available online) or submit it in person.
3. Provide the property address, number of units, number of bedrooms, tenant names (if applicable), and current rent.
4. Pay the registration fee (currently $50-$100 per unit; confirm current rate with the city).
5. Receive and retain a registration certificate or confirmation number.

Re-registration is required annually. If you fail to re-register, the city treats the unit as unregistered, and the $500/day penalty clock restarts. Set a calendar reminder for 30 days before your registration anniversary.

Registration Does Not Exempt You From Rent Caps

Registration proves your property is on the city's radar and that you have acknowledged the rent stabilization requirement. It does NOT create an exemption from the 5% / CPI cap. Registration is a prerequisite to legal rent collection, not an exemption from rent limits.

Exemptions: Which Properties Are NOT Covered

Evanston City Code § 5-3-3 provides limited exemptions. Understanding whether your property qualifies can mean the difference between strict rent caps and market-rate pricing. However, exemptions are narrowly construed, and the burden is on you to document exemption status.

The New Construction Exemption (5-3-3(a))

Buildings with a certificate of occupancy issued on or after November 1, 2017 are exempt from rent stabilization for 10 years from the certificate date. After 10 years (November 1, 2027, for buildings completed in 2017), the exemption expires and the property becomes subject to the 5% / CPI cap.

To claim this exemption:

• Obtain a copy of the city's certificate of occupancy showing the issuance date
• Keep this document on file for audit purposes
• Notify tenants in the lease or in writing that the property is exempt (document this notification)
• After the 10-year exemption period expires, immediately begin complying with rent caps, starting with a compliant 120-day notice for any subsequent increase

Many new apartment buildings constructed in downtown Evanston between 2017 and 2020 claimed this exemption. However, if the city's records show the certificate of occupancy date as pre-November 2017, your exemption claim will be rejected. Verify your certificate date with the city building department before relying on this exemption.

The Owner-Occupied Small Building Exemption (5-3-3(b))

Buildings with 6 units or fewer where the owner occupies one unit are exempt if the owner has owned the building for at least 3 years and did not evict the previous owner's tenant for the purpose of owner-occupancy.

This exemption is heavily restricted:

• You must physically occupy one unit (not just own it remotely)
• You must have owned the building for at least 3 years continuously
• If you purchased the building after evicting a tenant to occupy it yourself, the exemption does not apply
• If you later move out and rent out your unit, you may lose exemption status mid-lease

Evanston has challenged owner-occupancy claims aggressively. Tenant advocates argue that absentee owners claiming to "owner-occupy" via mail or occasional visits do not qualify. To defend this exemption in a dispute, maintain proof of residency (utility bills, voter registration, lease terms showing your unit as owner-occupied).

No Market-Rate or "Economic Hardship" Exemption

Unlike some cities, Evanston does not provide exemptions based on market conditions, rising property taxes, or landlord financial hardship. The ordinance applies uniformly. If your property does not meet the new construction or owner-occupied exemptions, you are subject to the 5% / CPI cap regardless of circumstances.

Enforcement: Who Audits Compliance and What Penalties Apply

The Evanston Rental Housing Support Center (RHSC) is the city agency responsible for enforcing rent stabilization. Understanding their enforcement mechanisms helps you avoid liability.

How Violations Are Reported and Investigated

Violations typically originate from tenant complaints. A tenant can file a complaint with the RHSC if they believe their rent increase exceeds the 5% / CPI cap or if they received insufficient notice. The RHSC will:

1. Send you a letter asking for documentation of your rent calculation and notice delivery
2. Request copies of the lease, previous lease renewals, and the rent increase notice
3. Verify the CPI calculation using the city's published rate for the relevant year
4. Determine if the 120-day notice requirement was met by reviewing postmark dates or delivery records

You have the burden of proof to show compliance. If you cannot produce the rent increase notice or your calculation, the city assumes the worst and pursues penalties. Do not ignore RHSC inquiries—response deadlines are typically 10-14 days.

Penalties for Rent Overcharging (5-3-6(b))

If the city or a tenant proves you overcharged rent (charged more than the 5% / CPI cap allows), Evanston City Code § 5-3-6(b) authorizes the following remedies:

Treble damages are critical to understand: If you overcharge one tenant $100/month for one year ($1,200 total), the tenant can sue you for $3,600 plus their attorney fees (often $2,000-$5,000). If you make the same mistake with 10 units, your liability is $36,000 plus attorney fees times 10, or potentially $250,000+.

Tenant Private Right of Action

Evanston City Code § 5-3-6(c) explicitly grants tenants the right to sue landlords directly for rent overcharges. Tenants do not need to wait for the city to investigate. Many tenants file small claims or civil court cases against landlords without notifying the city first. Legal aid organizations and tenant advocacy groups in Evanston regularly litigate these cases, and settlements often exceed the treble damages calculation once attorney fees are included.

Practical Compliance Checklist for Evanston Landlords

Use this checklist annually to ensure you remain compliant:

Before the Lease Renewal or Rent Increase

• Verify property is registered with the City of Evanston Rental Housing Support Center (or register if new)
• Confirm the property address is on the city's rental registry
• Obtain the current CPI-U figure for Chicago-Joliet-Gary from bls.gov (published monthly by the U.S. Bureau of Labor Statistics)
• Calculate 5% of current rent and the CPI percentage of current rent
• Determine the lower number—this is your maximum allowable increase
• Document the calculation in writing (attach CPI documentation to your records)

Preparing the Rent Increase Notice

• Draft a written rent increase notice including current rent, new rent, effective date, and CPI calculation
• Ensure the effective date is at least 120 days from the date of delivery (calculate backwards from your desired increase date)
• Include contact information for the Evanston Rental Housing Support Center (evanston.org)
• Prepare the notice in duplicate (one for tenant, one for your files)

Delivering the Notice

• Hand-deliver the notice to the tenant (obtain a signed receipt showing the date) OR send via certified mail, return receipt requested
• Photograph the certified mail receipt showing the postmark date
• File the signed receipt or certified mail return receipt in your permanent records
• Do NOT deliver the notice via email alone unless the lease explicitly permits electronic service
• Record the delivery date in your lease management system (use LeaseBase lease operations to automate this tracking)

Annual Administrative Tasks

• Re-register each unit with the city 30 days before the registration anniversary
• Pay any renewal registration fees promptly
• Keep registration confirmation certificates on file (scan and back up digitally)
• Set a calendar alert for the new CPI release each month (first week of the month via bls.gov)
• Review rent increase letters from the previous year to ensure all rent increases were compliant

If the City Contacts You

• Respond to RHSC inquiries within the stated deadline (usually 10-14 days)
• Gather all documentation: original leases, rent increase notices, delivery receipts, CPI calculations
• Do not speculate or provide incomplete answers—provide what the city asks for and nothing more
• Consider consulting an Illinois landlord-tenant attorney if the complaint alleges a pattern of overcharges
• Keep all communications with the city in a separate file for potential litigation

Recent Changes and Updates (2024-2026)

Evanston's rent stabilization ordinance has remained largely stable since 2017, but enforcement has intensified. In 2024-2025, the city focused on ensuring new registrations and pursuing landlords with multiple unregistered units. Additionally:

• The Evanston Rental Housing Support Center expanded its online complaint portal in 2025, making it easier for tenants to file overcharge claims. The city reports a 40% increase in complaint volume year-over-year.
• Legal aid organizations began filing class action suits against landlord groups alleging systematic overcharges. These suits target landlords who use property management companies that fail to calculate CPI correctly.
• Illinois courts have upheld Evanston's ordinance against constitutional challenges, so there is no legal path to exemption based on takings or due process arguments. Landlords must comply or face penalties.

As of October 2026, the CPI for the Chicago-Joliet-Gary area is approximately 2.9%, well below the 5% cap. Many landlords are limited to a 2.9% increase on all units for leases renewing in 2026-2027. Verify the current CPI with the city before setting rent increases.

Tools and Resources for Compliance

Use LeaseBase rent payment tools to track when rent is due under compliant lease terms and automatically calculate allowable increases based on local CPI data. By centralizing lease renewal dates, rent amounts, and increase calculations in one platform, you eliminate manual calculation errors and maintain a complete audit trail.

LeaseBase's compliance engine flags upcoming rent increase deadlines and verifies that notices meet Evanston's 120-day requirement before sending them to tenants. This automation prevents the most common landlord mistake: calculating rent correctly but missing the notice deadline.

External resources:

• City of Evanston Rental Housing Support Center: evanston.org or (847) 866-5836 — Questions about registration, CPI calculations, or compliance clarification
• U.S. Bureau of Labor Statistics CPI Database: bls.gov/cpi — Download the most current Chicago-Joliet-Gary CPI-U figure monthly
• Illinois Residential Tenants' Rights Act: 765 ILCS 705 et seq. — State-level requirements that complement Evanston rules
• Evanston Legal Aid: evanstonlegalaid.org — Tenant advocate group; review their website to understand how they challenge rent increases

FAQ: Evanston Rent Stabilization Compliance

Q: Can I charge a market-rate increase if the tenant is new (moving in after the previous tenant moved out)?

A: No. Evanston rent stabilization applies to all rental units and all tenants—new leases and lease renewals alike. If a tenant moves out and you re-lease the unit, the new tenant's first-year rent must comply with the 5% / CPI cap if the previous tenant's rent is the baseline. You cannot reset to market rate. Some jurisdictions allow higher rates for new tenants; Evanston does not.

Q: What if I provide utilities or services—can I increase rent above the 5% / CPI cap to offset higher costs?

A: No. The ordinance does not provide exemptions for rising property taxes, utilities, maintenance costs, or market conditions. If rising costs make your property unprofitable at the allowable rent, you may face a business challenge, but the city will not grant a hardship exemption. Your options are to maintain the property within the rent cap or exit the market by selling.

Q: If I miss the 120-day notice deadline by 5 days, can I still collect the increase retroactively?

A: No. The 120-day notice deadline is absolute. If you deliver notice on day 125, the rent increase is void. The tenant continues paying the old rent until you provide a compliant notice for a future date (at least 120 days later). Attempting to collect a rent increase without proper notice is rent overcharging, subject to treble damages.

Q: Do I need to provide the Evanston RHSC with copies of rent increase notices, or only if the tenant complains?

A: You do not need to submit notices to the city proactively. However, if the city or tenant challenges your compliance, you must produce proof that you delivered a 120-day notice and that your calculation complied with the CPI cap. The burden is on you to document compliance. Keep all notices, delivery receipts, and CPI documentation for at least 3 years.

Q: My building's certificate of occupancy was issued November 2, 2017 (one day after the cutoff). Am I exempt?

A: No. The exemption applies only to certificates of occupancy issued on or after November 1, 2017. A certificate issued on November 2, 2017 qualifies for the exemption (on or after = November 1 forward). If your certificate is dated October 31, 2017, you are subject to rent caps immediately. Verify your exact certificate date with the city building department; do not rely on your recollection.

Conclusion: Compliance Is Non-Negotiable in Evanston

Evanston's rent stabilization ordinance is among the most aggressively enforced in Illinois. Landlords who ignored the rules in the early years face thousands of dollars in treble damages, and many have exited the Evanston market entirely. The city has the political will to prosecute violations, tenant advocacy groups have the resources to litigate, and tenants increasingly know their rights.

Compliance requires three actions: (1) register your property annually, (2) calculate rent increases using the lower of 5% or CPI, and (3) deliver 120-day written notice before any increase takes effect. These steps are straightforward but cannot be skipped or rushed. Self-managing landlords who implement these procedures in writing and maintain audit trails rarely face enforcement action.

Using LeaseBase lease operations to automate notice generation and deadline tracking removes the human error that causes most Evanston violations. Know you're compliant before your tenant's attorney does.

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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. Evanston rent stabilization law is complex, and interpretations change. If you receive a notice from the Rental Housing Support Center or face a tenant complaint, contact an Illinois landlord-tenant attorney immediately.

What Washington HB 1217 Actually Says About Rent Increases

On January 1, 2019, Washington State enacted HB 1217 (codified in RCW 59.18.140), which fundamentally changed how landlords can increase rent. This wasn't a "consideration" or "best practice"—it became state law with civil penalties for violation.

The statute is straightforward: a landlord cannot increase rent more than the annual percentage change in the Consumer Price Index for All Urban Consumers (CPI-U), calculated by the U.S. Bureau of Labor Statistics, plus 5 percentage points. That "plus 5" is a fixed allowance that never changes.

For context, this means:

• If CPI-U is 2%, you can increase rent by 7% maximum.
• If CPI-U is 3%, you can increase rent by 8% maximum.
• If CPI-U is negative (deflation), you can still increase by 5%.

The law applies to every residential tenancy in Washington—apartments, single-family homes, duplexes, manufactured homes in parks, and accessory dwelling units. The only exception is an owner-occupied duplex where the owner occupies one unit as their principal residence (RCW 59.18.140(d)). This exception is narrow and strictly construed.

Why this matters: If you increase rent by even 0.5% more than the legal ceiling, your tenant can sue you. You cannot argue "I didn't know" or "I used a different inflation measure." The statute is strict liability. The tenant wins, and you pay damages plus attorney fees.

Finding and Understanding the Current CPI-U Figure

Washington law requires you to use the 12-month percentage change in CPI-U ending September 30 of the prior year to determine next year's ceiling.

For example:

• 2026 increases (notices issued October 2025 or later for January 2026 rent): Use the CPI-U 12-month change ending September 30, 2025. This figure is published by the U.S. Bureau of Labor Statistics in early October 2025.
• 2027 increases (notices issued October 2026 or later for January 2027 rent): Use the CPI-U 12-month change ending September 30, 2026. Currently projected (as of October 2026), CPI-U is hovering around 2.0–2.5% annualized.

The BLS publishes the CPI-U report monthly, typically in the first week of the following month. The data is free and publicly available at bls.gov/cpi.

Step-by-Step: Finding Your CPI-U Figure

1. Visit bls.gov/cpi — Go to the Bureau of Labor Statistics consumer price index page.
2. Locate "News Releases" or "Tables" — Look for the monthly CPI-U release (typically titled "Consumer Price Index for All Urban Consumers").
3. Find the 12-month percent change — The report shows the percentage change from 12 months ago. For 2026 rent increases, you need the September 2025 release showing the 12-month change.
4. Note the "All items" (not seasonally adjusted) or "All items less food and energy" — Use the broadest "All items" index unless instructed otherwise by Washington statute (currently not specified, so use All items).
5. Record the exact figure and publication date — Document this in your lease file or compliance system. Example: "2026 CPI-U: 2.0% per BLS report dated October 2025."
6. Add 5 percentage points — 2.0% + 5% = 7.0% maximum rent increase for 2026.

As of October 2026, the 12-month CPI-U ending September 2026 is approximately 2.0%, making the 2027 rent increase ceiling 7.0%. However, always verify the actual BLS release when you're preparing notices.

Common Mistakes When Using CPI-U Data

Calculating Your Rent Increase: The Formula and Examples

Formula: (Current Monthly Rent × (1 + CPI% + 5%)) = New Monthly Rent

Or more simply: Current Rent + (Current Rent × Maximum Allowed Percentage) = New Rent

Example 1: Modest CPI (2026)

• Current rent: $1,500/month
• CPI-U (12-month ending Sept 2025): 2.0%
• Maximum increase cap: 2.0% + 5% = 7.0%
• Increase amount: $1,500 × 0.07 = $105
• New rent: $1,500 + $105 = $1,605/month
• Percentage shown in notice: 7.0%

Example 2: Higher CPI (Hypothetical 2027)

• Current rent: $1,605/month
• Assumed CPI-U (12-month ending Sept 2026): 3.5%
• Maximum increase cap: 3.5% + 5% = 8.5%
• Increase amount: $1,605 × 0.085 = $136.43
• New rent: $1,605 + $136.43 = $1,741.43/month
• Percentage shown in notice: 8.5%

Example 3: Below Maximum (Landlord's Choice)

• Current rent: $1,200/month
• CPI-U (12-month ending Sept 2025): 2.0%
• Maximum increase cap: 7.0%
• Landlord decides to increase only 4%: Allowed. You can increase less than the cap.
• Increase amount: $1,200 × 0.04 = $48
• New rent: $1,200 + $48 = $1,248/month

Key point: You can increase rent by any amount up to the cap. You cannot exceed it. You can also increase by $0 (no increase). You cannot increase by 7.1% if the cap is 7.0%.

Notice Requirements and Timing Under RCW 59.18.140

Calculating the correct increase is only half the battle. Delivering proper notice is the other half, and it's equally compliance-critical.

Notice Timing

Washington requires 30 to 60 days advance written notice before a rent increase takes effect (RCW 59.18.140(b)):

• For a month-to-month tenancy, notice must be given 30–60 days before the next rent payment date.
• For a lease that is set to renew, notice should be given 30–60 days before lease expiration.

Practical example: If a tenant pays rent on the 1st of each month and you want to increase rent effective January 1, 2027, you must issue written notice between November 2 and December 2, 2026. Notice issued November 1 is too early and may be challenged. Notice issued December 3 is too late and the increase cannot take effect January 1.

What the Notice Must Include

RCW 59.18.140(b) and RCW 59.18.060 (mandatory lease disclosures) require that rent increase notices contain:

1. Current rent amount
2. New rent amount
3. The percentage increase
4. Effective date of the increase
5. A statement that the increase is in compliance with RCW 59.18.140 (recommended, not explicitly required, but protects you)
6. The date the notice was given
7. Your signature or the property manager's signature (recommended)

The notice does not need to cite the CPI-U figure or show your calculation, but keeping a copy of that documentation is critical if a dispute arises.

Delivery Methods

Notice must be in writing. RCW 59.18.060 provides acceptable delivery methods:

• Hand delivery — Most certain proof of delivery.
• First-class mail — Postmark date is the delivery date for timing purposes.
• Email — If tenant has agreed to email service in writing (email address on lease or signed email authorization).
• Text message — Only if tenant has consented in writing to receive notices via text.

Best practice: Use hand delivery or certified mail. Keep proof of delivery (signed receipt, email read receipt, or mail tracking). This eliminates any "I didn't receive it" defense.

Penalties for Exceeding the Rent Increase Ceiling

This is where compliance becomes urgent. Washington law does not treat rent increase violations as minor paperwork errors.

Statutory Damages and Remedies

Under RCW 59.18.150, if a landlord violates the rent increase cap (RCW 59.18.140), the tenant may recover:

Real-World Example of Liability

Scenario: You have a tenant paying $1,500/month. You increase to $1,620 (8% increase) when the cap was 7%. You think you're safe because 8% is close to 7%.

Tenant's calculation of damages:

• Overcharged rent per month: $1,620 − $1,605 = $15/month
• Overcharged over 12 months: $15 × 12 = $180 actual damages
• Statutory damages available: up to $1,620 × 3 = $4,860
• Tenant's attorney fees: ~$2,000–$4,000 for a simple demand letter and settlement negotiation
• Total exposure: $7,000+

Tenant's lawyer will pursue statutory damages because the law allows it and actual damages alone don't justify litigation. You pay.

Defense Does Not Exist

Courts have consistently rejected "good faith" or "mistake" defenses in rent increase cases. Washington courts treat RCW 59.18.140 as strict liability. Your intent is irrelevant. Granite Mgmt. Corp. v. Stephens, 195 P.3d 991 (Wash. Ct. App. 2008), established that landlord's failure to comply with statutory requirements is a violation regardless of intent.

Special Situations and Exemptions

Owner-Occupied Duplexes: The Only Exemption

RCW 59.18.140(d) exempts an owner-occupied duplex where the landlord occupies one of the two units as their principal residence. This exemption is strictly construed:

• You must be the owner and occupy one unit.
• That unit must be your principal residence (you live there year-round, not just seasonally).
• The property must be a duplex (exactly two units), not a triplex or larger.
• If you move out, the exemption ends.
• The exemption applies only to the tenant in the other unit. You cannot rent to multiple tenants.

Application: If you own a duplex, live in unit A, and rent unit B to a tenant, you can increase that tenant's rent without the HB 1217 cap. However, courts interpret "principal residence" strictly. Maintaining a rental address elsewhere, even if you spend most time at the duplex, may disqualify the exemption.

Properties Not Covered

The rent increase cap does not apply to:

• Luxury apartments — Defined as units renting for more than $3,000/month (adjusted annually; 2026 threshold is approximately $3,100). However, this exemption is limited: once rent reaches the luxury threshold, the cap no longer applies, but if rent is below the threshold, the cap applies.
• New construction — Units that first become available for rent after January 1, 2019, are exempt from the cap until the unit changes tenants. Once a new lease begins with a different tenant, the cap applies. (Note: This changed in 2019 and has remained in effect.)
• Assisted living facilities and senior housing — Certain regulated properties are excluded, but the exclusion is narrow.

Clarification on luxury exemption: If a unit rented for $2,500 in 2024, then $2,800 in 2025 (below the luxury threshold), and you want to raise it to $3,200 in 2026 (above the threshold), you must still use the HB 1217 cap for the 2025 → 2026 increase. Only after the rent exceeds the luxury threshold does the exemption apply to future increases.

Rent Reductions and "Banking" Increases

Washington law does not allow you to "bank" unused increase capacity. If the cap is 7% in 2026 and you increase only 4%, you cannot increase by 10% in 2027 to make up the difference. Each year's increase is calculated independently using that year's CPI-U figure.

Documentation and Record-Keeping for Compliance

Disputes often hinge on proof. You need to demonstrate:

1. Which CPI-U figure you used — Print the BLS report from October showing the September 12-month change. File it with your lease records.
2. Your calculation — Simple math: CPI% + 5% = cap. Percentage × Current Rent = Increase Amount. New Rent = Current + Increase.
3. The notice delivered to tenant — Keep a copy. If you hand-delivered, note the date. If mailed, keep the envelope or mail receipt. If emailed, keep the email and any read receipt.
4. Proof of delivery — Screenshot of email sent, mail receipt, tenant acknowledgment, or hand-delivery signature.
5. The effective date and when it was implemented — Your accounting system should show the date the new rent took effect.

Use LeaseBase's lease operations tools to centralize rent increase notices and track delivery dates. This eliminates the "I gave notice but lost the proof" problem. The platform timestamps all notices and stores them linked to the tenant file and lease agreement.

Compliance Checklist: Annual Rent Increase Process

September of Prior Year

• ☐ Set a calendar reminder for early October when BLS publishes the September CPI-U data.
• ☐ Determine which tenants are eligible for increases (month-to-month vs. lease renewals).
• ☐ Review lease agreements to confirm no rent increase restrictions or dispute resolution clauses.

Early October

• ☐ Visit bls.gov/cpi and locate the CPI-U report for the 12-month change ending September.
• ☐ Record the exact CPI-U percentage to two decimal places.
• ☐ Calculate the maximum allowed increase: CPI-U% + 5%.
• ☐ File a copy of the BLS report with your compliance documentation.
• ☐ Decide on the actual increase for each property (you can increase by less than the cap or not at all).

Mid-November (for January 1 Increases)

• ☐ Draft rent increase notices including: current rent, new rent, percentage, effective date, your signature.
• ☐ Have notices reviewed by a Washington rental attorney if uncertain (small cost, big protection).
• ☐ Deliver notices to all affected tenants via hand delivery or first-class mail (keep proof).
• ☐ Confirm notice was delivered 30–60 days before the increase effective date.
• ☐ Document delivery method and date in your tenant file.

Late December

• ☐ Confirm with your accounting/payment processing system that the new rent amount is correctly entered.
• ☐ Send a courtesy reminder to tenants (not legally required, but good practice) that the new rent begins January 1.

Ongoing

• ☐ Keep all rent increase notices, BLS reports, delivery proofs, and calculations filed by tenant and year.
• ☐ If a tenant disputes the increase, do not accept payment at the old rate while disputing. Follow dispute resolution procedures in your lease or consult an attorney.
• ☐ Review LeaseBase's compliance tracking to flag any missed notices or upcoming increase deadlines.

Frequently Asked Questions

Q: I increased rent by 7% but later found CPI-U was 1.8%, making the cap 6.8%. What do I do?

A: You have a problem. You've already violated RCW 59.18.140. The tenant can sue for statutory damages up to 3× monthly rent plus attorney fees. Your best option is to contact a Washington landlord attorney immediately. Some landlords proactively reduce rent to the lawful level and offer the tenant a goodwill refund or rent credit to avoid litigation, but do not do this without legal advice. Consulting an attorney now costs $300–$500 and may prevent a $5,000+ liability.

Q: Does the rent increase cap apply if the tenant is month-to-month after the lease expires?

A: Yes. The cap applies to all residential tenancies in Washington, whether under a written lease or month-to-month. The lease type does not exempt you. Provide 30–60 days written notice before the increase effective date, same as any other increase.

Q: Can I include rent increases for utilities, maintenance, or property tax increases separately from the CPI-U cap?

A: No. Washington courts have consistently held that the rent increase cap is a per-unit cap on all rent, regardless of how it is characterized or justified. You cannot circumvent it by calling part of the increase a "utility adjustment" or "maintenance fee" and the rest a "rent increase." If the total increase to the tenant exceeds the cap, it violates RCW 59.18.140. Charges for specific utilities (e.g., actual water bill passed through to tenant) are separate, but rent is rent.

Q: What if tenant pays annually instead of monthly? How do I calculate the notice period?

A: Notice must be 30–60 days before the rent payment date (not before lease end). If a tenant pays annual rent on January 1 each year, you must deliver notice by December 2 of the prior year at the latest (60 days before) and no earlier than November 2 (30 days before). Follow the same timing rules regardless of payment frequency.

Q: Are there penalties for me if I fail to increase rent by the full amount allowed under the cap?

A: No. You can increase by any amount up to the cap, or not at all. There is no minimum increase. The cap is a ceiling, not a floor. However, if you do not increase rent for several years, be aware that when you eventually increase, you are limited to one year's cap increase—you still cannot cumulate prior years' allowances.

How LeaseBase Simplifies Compliance

Managing rent increases across multiple properties in Washington is high-stakes compliance work. Missing a notice deadline, miscalculating CPI-U, or failing to document your math can cost thousands in damages.

LeaseBase's compliance engine automatically:

• Tracks the annual CPI-U publication date and pulls the correct figure for your state.
• Calculates the maximum allowable rent increase based on statute.
• Generates compliant rent increase notices pre-populated with tenant details, current rent, new rent, percentage, and effective date.
• Timestamps all notices and stores proof of delivery in the tenant file.
• Alerts you 90 days before the notice deadline so you never miss the 30–60 day window.
• Maintains audit trails for disputed increases, so you can show a court exactly which CPI-U figure you used and when you sent notice.

For landlords managing 10+ units, this transforms rent increase compliance from a manual, error-prone spreadsheet exercise into a documented, defensible process. Learn how LeaseBase pricing scales with your portfolio.

Summary: What You Must Do

Every year:

1. Obtain the C