Oregon Rent Control Law: How the Statewide Cap Works for Landlords

Oregon became the first state in the country to pass statewide rent control in 2019 with Senate Bill 608. For investors accustomed to free-market states where rents can be set at whatever the market will bear, the mechanics of Oregon's cap require precise understanding. Guessing wrong costs three months' rent in damages, and the calculation changes every year.

How the Annual Rent Cap Is Calculated

Under ORS 90.323, as amended by SB 611 in 2023, the maximum allowable annual rent increase is the lesser of:

• 10 percent (the hard statutory ceiling), or
• 7 percent plus the September annual 12-month average change in the Consumer Price Index for All Urban Consumers, West Region (All Items), as published by the Bureau of Labor Statistics

The Oregon Department of Administrative Services calculates and publishes the specific percentage by September 30 each year for the following calendar year.

Recent cap history:

For the first several years of the law, high inflation kept the calculated rate above 10%, meaning the hard ceiling was the operative number. In 2026, cooling inflation finally brought the effective cap below 10% to 9.5%. If inflation continues to moderate, the cap will tighten further.

Frequency and Notice Requirements

One increase per 12 months: A landlord cannot raise rent more than once in any rolling 12-month period, regardless of tenancy type. Splitting a 9% increase into two 4.5% installments six months apart violates the statute even though each individual increase is below the cap.

90 days' written notice: Every rent increase requires a minimum of 90 days' advance written notice specifying the exact amount of the increase, the new total rent, and the effective date.

First-year freeze: Rent cannot be increased at all during the first year of any tenancy. The cap applies starting in month 13.

Who Is Exempt from the Cap

The law includes several carve-outs that sophisticated investors should understand:

New construction (15-year rolling exemption): If the dwelling unit received its first certificate of occupancy less than 15 years before the date of the rent increase notice, the unit is entirely exempt from the cap. For a building completed in 2015, the exemption expires in 2030. A building completed in 2020 is exempt until 2035. Investors targeting new-build multifamily can set market rents freely during this window. The written notice to the tenant must explicitly state why the cap does not apply.

Substantial renovation: Landlords who have completed significant capital improvements to the unit can raise rent above the cap, though the threshold for what qualifies is not precisely defined in the statute and may require supporting documentation.

Small landlords (two or fewer units): Landlords who own two or fewer single-family homes or condominiums are generally exempt from the cap. This is a narrow exemption that does not apply to most portfolio investors.

Subsidized housing: Units where rent is regulated by a government program (e.g., LIHTC, project-based Section 8) follow the program's own rent-setting rules rather than the state cap.

The Penalty for Exceeding the Cap

A landlord who raises rent above the statutory maximum is liable to the tenant for:

• Three months' rent, plus
• Actual damages caused by the unlawful increase

This is not a hypothetical risk. Tenants who know the law — or whose attorneys do — will assert the claim. The financial exposure from a single violation on a $2,000/month unit is $6,000 in statutory damages alone, before any actual damages or legal costs.

How Rent Control Interacts with No-Cause Terminations

One of the less obvious mechanisms in SB 608 is the anti-rent-reset provision. If a landlord terminates a tenancy without cause during the first year (the only period when no-cause termination is permitted), the rent for the next tenant cannot exceed what the previous tenant would have been charged under the cap.

This prevents a common workaround used in other markets: evicting a below-market tenant to re-list at current market rates. Oregon's law follows the rent through the unit, not the tenancy.

Impact on Investment Underwriting

Rent control compresses the upside on existing assets where in-place rents lag the market. In a free-market state, buying a property with below-market rents creates immediate value through rent bumps to market. In Oregon, the trajectory to market rent is artificially extended. A unit $400 below market with a 9.5% annual cap takes multiple years to close the gap, assuming the cap doesn't tighten further.

This directly affects exit valuations. A buyer looking at your asset will underwrite the rent roll as-is and model the capped trajectory, not snap it to market. Properties with severely lagging rents are penalized during negotiations because the income growth is constrained by statute.

For investors building a proforma, accurate rent growth assumptions must be anchored to the published cap, not market comparables. The Oregon Investment Property Guide includes rent growth modeling tools calibrated to the actual statutory limits, so your cash flow projections reflect the regulatory reality rather than free-market assumptions.

Practical Compliance Steps

1. Check the DAS-published cap for the current calendar year before drafting any rent increase notice
2. Verify the certificate of occupancy date to determine whether the 15-year exemption applies
3. Confirm the previous rent increase date to ensure 12 months have elapsed
4. Deliver the written notice at least 90 days before the effective date
5. Include the specific exemption basis in writing if raising above the cap
6. Document everything — the penalty for non-compliance is automatic and substantial

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