Oregon 90-Day Rent Increase Notice Requirement — Complete Compliance Guide (2026)

What ORS 90.323(3) Actually Requires

Oregon Revised Statutes 90.323(3) contains one of the strictest rent increase notice requirements in the nation. Unlike many states that permit 30 or 45 days' notice, Oregon landlords must provide 90 calendar days of written notice before any rent increase becomes effective—regardless of the dollar amount or reason for the increase.

The statute reads: "A landlord shall not increase the rent for a tenant without first providing the tenant with written notice of the increase at least 90 days before the increase becomes effective." This language is absolute. There are no carve-outs for:

• Property tax increases
• Insurance premium increases
• Major capital improvements or repairs
• Market-rate adjustments
• Unit renovations or upgrades
• New utilities or amenities

A $1 increase requires 90 days' notice. A $500 increase requires 90 days' notice. This uniformity exists because Oregon law treats rent stability as a tenant protection issue, not an economics issue.

Why This Matters to Your Compliance

Many landlords assume they can give "reasonable" notice or that a notice postmarked 60 days in advance satisfies the law. This assumption costs landlords money. Oregon courts and the Department of Consumer and Business Services (DCBS) enforce the 90-day rule strictly, and violations trigger statutory remedies that go beyond unpaid rent disputes.

When a landlord fails to provide proper 90-day notice, the rent increase is void. The tenant can continue paying the old rent amount indefinitely, and the landlord has no legal recourse to recover the shortfall. Additionally, the tenant may file a civil claim under ORS 90.323 for actual damages (the difference between what they paid and what they owed), plus attorney fees and court costs.

How to Count the 90 Days Correctly

The 90-day clock starts the moment the tenant receives the notice—not when you send it, not when you type it, and not when the postal service reports delivery.

The Critical Timing Rule

Day 1 of the notice period begins on the date the tenant receives the notice. If you hand-deliver notice on January 15th, day 1 is January 15th. If you mail certified notice on January 15th and the tenant signs for it on January 20th, day 1 is January 20th. If you email notice on January 15th and the tenant has agreed to accept service via email, day 1 is January 15th (the date you sent it, which constitutes actual receipt).

Day 90 is therefore 89 days later. Using the January 15th example:

Event	Date	Day Number
Notice hand-delivered	January 15	Day 1
30 days pass	February 14	Day 30
60 days pass	March 16	Day 60
90 days pass (earliest effective date)	April 15	Day 90

The new rent becomes effective on April 15th at the earliest. If you set the effective date as April 14th, the notice is defective and unenforceable.

Proof of Delivery Is Essential

Do not rely on assumptions about when a tenant received notice. Oregon courts require clear evidence of delivery. Here are the compliant delivery methods:

• Certified Mail with Return Receipt: The postal service provides a signed receipt proving delivery date. This is the gold standard because USPS records are admissible in court.
• In-Person Hand Delivery: Give notice directly to the tenant and have them sign a receipt acknowledging the date. If they refuse to sign, note the date and time you offered the notice and have a witness present if possible.
• Email (if tenant consents): If the tenant has agreed in writing to accept notices via email, send the notice and retain the delivery confirmation. The email timestamp is the delivery date.
• Personal Service by Process Server: If you hire a process server to deliver notice, obtain the affidavit of service showing the date of delivery.

Methods that do NOT satisfy the law:

• Text message (unless tenant has explicitly consented to legal notices via SMS, which is rare and risky)
• Verbal notice, even if witnessed
• Notice left at the property without tenant signature
• Notice mailed to a forwarding address if tenant still lives at the rental
• Notice posted on the door without additional delivery attempt

What Must Be Included in the Notice

ORS 90.323(5) specifies the content requirements for a rent increase notice. If your notice lacks any of these elements, it is void and unenforceable. The notice must include:

Required Notice Elements

1. Current rent amount — State the rent the tenant is currently paying (e.g., "$1,500 per month").
2. New rent amount — State the rent amount after the increase (e.g., "$1,650 per month").
3. Effective date — Specify the date on which the new rent becomes due. This must be at least 90 days after notice delivery.
4. Reason for the increase (in certain jurisdictions) — While ORS 90.323 does not require a reason at the state level, some cities (Portland, Eugene) require landlords to justify increases under 5% or cap increases at inflation rates. Check local rules.
5. Compliance statement — Include language indicating the landlord has complied with ORS 90.323 (e.g., "This notice is provided in accordance with ORS 90.323(3), which requires at least 90 days' advance written notice of rent increases").

Sample language for the notice body:

"Dear [Tenant Name], This letter is to inform you that your rent will increase effective [Date 90+ days from notice delivery]. Your current rent is $[X] per month. Your new rent will be $[Y] per month beginning [Effective Date]. This notice is provided in accordance with Oregon Revised Statutes 90.323(3), which requires landlords to provide at least 90 days' advance written notice before a rent increase takes effect. If you have questions, please contact [Your Name/Company] at [Contact Information]."

Courts have voided notices that lacked specificity about the effective date or the new rent amount. For example, a notice stating "rent will increase to approximately $1,650" or "effective sometime in spring" has been found unenforceable because the effective date was not certain.

Local Restrictions That Override State Law

Oregon cities impose additional restrictions on rent increases beyond the 90-day notice requirement. These local rules are more restrictive than state law and therefore control. If you manage property in any of these jurisdictions, you must comply with the local rule even if it exceeds ORS 90.323's minimums.

Portland Rent Control (Portland City Code 30.01)

Portland requires 90 days' notice for any increase plus additional limits on the increase amount:

• Increases are capped at the "allowable increase" set annually by the Portland Rent Committee, which ties to the Consumer Price Index (CPI) plus a fixed percentage. For 2026, the allowable increase is 8.75%.
• Increases above the allowable percentage are allowed only if the landlord makes specific capital improvements to the unit.
• Notice must cite the specific allowable-increase percentage and explain why an increase (if any) above that threshold is justified.
• Violations result in treble damages (three times the overcharge) plus attorney fees.

Eugene/Springfield Rent Control (Eugene City Code 26.181-26.187)

Eugene requires 90 days' notice and caps increases at 7% annually (adjusted for inflation). Increases are prohibited for 12 months after a tenant moves in or after a major capital improvement is completed.

Bend Rent Control (Bend City Code 9.4.2000+)

Bend requires 90 days' notice and limits annual increases to CPI + 3%. Tenants age 55+ receive additional protections.

Salem, Corvallis, Gresham Protections

Several other municipalities have adopted local rent regulations. Some require 120 days' notice (exceeding Oregon's state 90-day minimum), caps on increase amounts, or just-cause requirements for non-renewal. Always check the city and county code for your property's location before issuing a rent increase notice.

You can search local ordinances at the city clerk's website or use LeaseBase's compliance engine, which flags local rent control rules based on your property address.

What Happens If You Fail to Provide 90 Days' Notice

Non-compliance with the 90-day requirement is not a minor procedural violation. Oregon law imposes real consequences.

The Notice Is Void

If you issue a notice with fewer than 90 days before the effective date, the notice is legally void. The tenant can refuse to pay the increased rent amount, and you have no right to collect it. For example:

• You mail notice on June 15th with an effective date of July 15th (30 days). The notice is void. The tenant continues paying the old rent. You cannot evict for non-payment of the "new" rent because no valid rent increase exists.
• You hand-deliver notice on December 28th with an effective date of January 1st (4 days). The notice is void. The tenant's rent stays the same.

Tenant Claims for Damages

Under ORS 90.323(6), a tenant may sue a landlord for actual damages resulting from a violation of the notice requirement. Actual damages include:

• The difference between what the tenant paid (at the old rent) and what would have been due (at the increased rent), multiplied by the number of months the improper increase was in effect.
• In some cases, tenants recover the full overcharge plus interest dating back to when the invalid increase was imposed.

Attorney fees are mandatory in tenant-initiated civil actions. If a tenant sues and prevails, you pay both the damages award and the tenant's attorney fees. Even if the damages are modest (e.g., $500), attorney fees often total $2,000–$5,000+, making the total judgment $2,500–$5,500+.

DCBS Complaint Process

Tenants can file complaints with Oregon's Department of Consumer and Business Services. While DCBS does not have direct enforcement power for individual disputes, the agency maintains a public database of landlord complaints. Repeated complaints can trigger investigations and potential civil enforcement action by the Oregon Attorney General.

Eviction Complications

If you attempt to evict a tenant for non-payment of rent based on an invalid notice, the tenant can assert the invalid notice as an affirmative defense. Oregon courts have consistently ruled that evictions rooted in improper rent increases violate public policy. You may face:

• Dismissal of the eviction case
• An order to pay the tenant's attorney fees and court costs
• A counterclaim by the tenant for damages related to the invalid notice

Step-by-Step Compliance Checklist

Use this checklist every time you issue a rent increase notice:

Step	Compliance Action	Documentation
1. Check Local Rules	Verify the property is not subject to local rent control or requires additional notice periods.	Screenshot of city code section; local compliance checklist
2. Calculate 90-Day Deadline	Choose delivery method and calculate the earliest effective date 90 days after anticipated delivery.	Calendar or spreadsheet showing delivery date and effective date
3. Draft Notice	Include current rent, new rent, effective date, and compliance statement. Use certified language if local rules apply.	Word document or template with all required elements filled in
4. Deliver Notice	Use certified mail, hand delivery with receipt, or email (if consented). Do not use door posting alone.	USPS return receipt, signed acknowledgment, or email delivery confirmation
5. Record Delivery Date	Document the exact date the tenant received the notice. Do not use the date you sent it.	Photograph of USPS receipt or signed acknowledgment with date
6. File in Lease Record	Store the original notice and all delivery proof in the tenant's lease file. Retain for at least 3 years.	Scanned notice + delivery proof in digital folder or physical file
7. Confirm Collection System	Update rent payment amount in your rent collection system on the effective date. Communicate new amount to tenant and collect accurately.	Screenshots of updated payment amount in your property management or rent collection app
8. Monitor Compliance	If tenant pays old rent amount on effective date, do not collect the difference. Consult an attorney before pursuing any enforcement.	Email from landlord to attorney documenting dispute

Special Scenarios and Edge Cases

Multiple Tenants on One Lease

If a lease has multiple tenants (e.g., married couple, roommates), you must deliver notice to each tenant. Notice delivered to only one tenant does not satisfy the law. Deliver to all named tenants via the same method (certified mail to both, or hand-delivery to both, etc.). Keep proof that each received it.

Notice to a Subtenant

If a tenant sublets and you are increasing rent on the original tenant, the notice goes to the original tenant (the party to the lease). However, if you are increasing rent on a subtenant arrangement (unusual but possible), verify the sublease terms and local law before proceeding. Consult an attorney if the situation is not standard.

Rent Increases During Lease Term

Oregon law permits rent increases during the lease term only if the lease specifically allows it. Most written leases include a clause allowing increases with proper notice. If there is no such clause and you try to increase rent mid-lease, the increase is likely void. Always review the lease before drafting the notice.

Renewal Leases

If a lease is ending and you are offering a renewal with a rent increase, the 90-day notice must be issued 90 days before the new lease term begins (not 90 days before the current lease ends). For example, if a lease ends June 30, 2027, and you want the increased rent to apply on July 1, 2027, issue the notice by April 1, 2027 (90 days before July 1).

Partial-Month Rent Increases

If a tenant's rent is due mid-month (e.g., on the 15th) and you want to increase it on the next rent due date, the 90-day period still runs from notice delivery, not from the rent due date. For example, if you deliver notice on January 20th and rent is due on the 15th of each month, the earliest effective date is April 20th. You cannot impose the increase on April 15th if that is fewer than 90 days from January 20th.

How to Document and Store Notices for Defense

If a tenant later disputes the rent increase, clear documentation of your compliance is your defense. Create a notice file for each property that includes:

• A copy of the original notice as delivered (scanned or photographed)
• Proof of delivery (USPS return receipt, signed acknowledgment, email delivery report)
• The date the notice was received by the tenant
• The effective date of the increase and the new rent amount
• A copy of the lease clause (if any) permitting mid-lease increases
• The local rent control rules in effect at the time (screenshot of city code, if applicable)
• Copies of rent payments received at the new amount (showing tenant acceptance)

Organized documentation proves compliance and defeats tenant claims. If a dispute arises, you can quickly produce evidence showing the notice was valid and properly delivered.

LeaseBase's lease operations module includes automated storage and retrieval of tenant notices, which timestamps all documents and ensures compliance records are retained and retrievable.

Frequently Asked Questions

Q: Can I email a rent increase notice without the tenant's written consent to email service?

A: No. Email is only valid if the tenant has agreed in writing to accept legal notices via email. This agreement must be explicit and documented. A casual email exchange does not establish consent to receive legal notices. Always use certified mail or hand delivery unless you have a signed email-service agreement with the tenant.

Q: If I send the notice 60 days before the effective date "just to be safe," am I compliant?

A: No. ORS 90.323(3) requires notice be provided "at least 90 days before the increase becomes effective." Fewer than 90 days is non-compliant, even if you believe the tenant should have accepted notice sooner. The statute is strict: 90 days or the notice is void.

Q: What if the tenant refuses to accept the notice when I try to hand-deliver it?

A: If a tenant refuses to accept hand-delivered notice, you must make a good-faith effort to deliver it. Document the date, time, and circumstances of the refusal. Then use certified mail as an alternative delivery method. The certified mail delivery date becomes the start of the 90-day period. Do not leave notice on the door without attempting personal delivery first.

Q: Can I increase rent twice in one year if I provide 90 days' notice each time?

A: At the state level (ORS 90.323), yes—if the lease permits it. However, many cities restrict the number or frequency of increases. Portland, for example, generally allows only one annual increase per tenancy. Check local rules before issuing a second notice in a 12-month period.

Q: If I increase rent but the tenant refuses to pay the new amount, can I evict for non-payment?

A: Only if the notice was valid (90+ days, proper delivery, correct content). If the tenant can prove the notice was defective, an eviction based on non-payment of the invalid increase will fail and may expose you to counterclaims for damages and attorney fees. Before filing an eviction, have an attorney review the notice's compliance.

Key Compliance Takeaways for October 2026

Oregon's 90-day notice requirement for rent increases is one of the strictest in the nation, and enforcement is active. Whether you manage a small portfolio or a medium-sized rental business, deviations from this requirement are expensive and easily disputed.

The critical facts:

• No increase, no matter how small, is valid without 90 days' written notice.
• The notice period begins on the date the tenant receives it, not when you send it.
• Delivery must be provable: certified mail, hand delivery with receipt, or email (if agreed).
• The notice must specify the current rent, new rent, and effective date with no ambiguity.
• Local rules in Portland, Eugene, Bend, and other cities impose additional requirements; non-compliance with local rules overrides state compliance.
• Violations result in void notices, tenant damage claims, attorney fee liability, and potential eviction defense.

Self-managing landlords who maintain organized records, use certified delivery methods, and verify local rules before issuing notices can avoid disputes altogether. LeaseBase's portfolio management tools include automated rent increase tracking, local compliance alerts, and notice templates that reduce errors and maintain audit trails.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your situation, particularly if you have received a tenant complaint or are considering an eviction. Oregon landlord-tenant law is complex and varies by municipality. Legal requirements change; this article reflects the law as of October 2026.