Oregon’s rent‑increase rules in 2026 continue the state’s rent‑stabilization system, which caps how much most landlords can raise rent each year and how often they can do it.
These caps mainly apply to older rental units, and they differ slightly for mobile‑home parks and certain small‑lot properties.
2026 statewide rent‑increase caps
For most residential rentals covered by Oregon’s rent‑stabilization law (generally buildings older than 15 years), the maximum annual rent increase in 2026 is 9.5%.
This cap is the lesser of 10% or 7% plus the prior‑year Consumer Price Index, and for 2025 CPI it comes out to 9.5%. In mobile‑home facilities with more than 30 spaces, the separate cap is only 6% in 2026.
How often rent can be raised
Under Oregon law, covered landlords can raise rent only once during a 12‑month period. If a landlord already raised your rent halfway through the year, they cannot increase it again until the next 12‑month window opens, even if the calendar year changes.
When the caps do not apply
The 9.5% (or 6%) caps do not apply to:
- New construction (units built within the last 15 years).
- Single‑family homes or condos if the owner meets certain “owner‑occupancy” or “personal‑use” exemptions.
- Some government‑subsidized, low‑income, or special‑purpose housing.
Notice and documentation rules
Landlords must give at least 45 days’ written notice before a rent increase in most cases. The notice should state the new rent amount, the effective date, and that the increase is subject to the state’s rent‑stabilization caps; if the landlord is not following the cap, tenants can challenge the increase with the Oregon Department of Administrative Services or a housing‑rights attorney.
What tenants should do if cap is broken
If you receive a rent‑increase notice that appears to exceed 9.5% (or 6% for large mobile‑home parks), save a copy and compare it with the current state‑set cap listed on the Oregon Office of Economic Analysis rent‑stabilization page.
Tenants can file a complaint, ask the landlord to correct the notice, or seek legal help through local tenant‑advocacy groups or Portland’s rental‑help desk, which tracks 2026‑style policy changes.
SOURCES :
- https://apps.oregon.gov/oregon-newsroom/OR/DAS/Posts/Post/2026-Rent-Stabilization-Percentages
- https://www.opb.org/article/2025/10/01/oregon-rent-increase-cap/
