Tualatin, OR Rental Property Rules: Rent Control (2026)

Oregon's statewide rent cap, enacted by Senate Bill 608 (2019), preempts the field for most residential rent regulation in Oregon and is the binding rule inside Tualatin city limits because Tualatin has not adopted a separate city-level rent-control ordinance. The cap is codified at ORS 90.323 for ordinary residential tenancies and ORS 90.600 for manufactured-home facility tenancies. The annual maximum rent increase for a covered unit is the lesser of 7% plus the West Region September Consumer Price Index (All Urban Consumers, U.S. City Average) or 10%, calculated and published annually by the Oregon Office of Economic Analysis (within the Department of Administrative Services). The Office publishes the maximum each September for the following calendar year. The 2025 maximum was 10%, and the 2026 maximum is 9.5% (reflecting the lower published CPI for September 2025). Several categories of dwellings are exempt under ORS 90.323(7): (1) buildings for which the first certificate of occupancy was issued less than 15 years before the date of the rent-increase notice (the so-called 15-year new-construction exemption); (2) subsidized housing units where the rent is determined by a federal, state, or local program; and (3) certain other narrowly defined categories. For manufactured-home facilities, ORS 90.600 imposes lower caps in some configurations (e.g., a 6% cap for parks with more than 30 spaces in certain rule sets - confirm against current statute). Landlords must provide tenants at least 90 days' written notice of any rent increase under ORS 90.323(3), and the notice must identify the percentage increase, the new rent amount, and the date the increase becomes effective; an increase that exceeds the published annual maximum is unenforceable, and the tenant has both a defense in any FED action and a private right of action under ORS 90.323(5) for unlawful rent increases.