Tualatin, OR Rental Property Rules: Just Cause Eviction (2026)

Tualatin does not impose any city-specific just-cause eviction requirement that is stricter than, or different from, Oregon state law. Inside Tualatin city limits, the binding rules are: ORS 90.427 (terminations by landlords), as amended by Senate Bill 608 in 2019 and Senate Bill 611 in 2023, sets the statewide just-cause framework. Within the first 12 months of occupancy under a month-to-month tenancy, a landlord may terminate with at least 30 days' written notice without stating a reason. After the first 12 months of occupancy under a month-to-month tenancy, a landlord may terminate the tenancy only for: (a) tenant-based cause - violation of the rental agreement, nonpayment, outrageous conduct, etc.; or (b) a qualifying landlord-based reason: (1) intent to demolish the dwelling unit or convert it to a non-residential use within a reasonable time, (2) intent to undertake repairs or renovations that cannot reasonably be accomplished while the unit is occupied, (3) intent for the landlord or an immediate family member to occupy the unit as a primary residence, or (4) the landlord has accepted an offer to purchase the dwelling unit from a buyer who intends in good faith to occupy it as a primary residence. For landlord-based no-cause terminations, the landlord must provide 90 days' written notice and pay an amount equal to one month's rent as relocation assistance, subject to certain small-landlord exemptions (typically four or fewer dwelling units). For fixed-term tenancies, ORS 90.427 makes a fixed-term tenancy convert to month-to-month at end of term unless the landlord has cause. Tualatin's TMC Chapter 6-13 (Rental Housing Maintenance Standards) requires landlords to provide tenants a copy of that chapter at each rental unit, but the chapter sets maintenance standards rather than eviction rules - the substantive eviction framework remains ORS Chapter 90. Operators should also note Oregon's pre-existing Oregon Residential Landlord and Tenant Act (ORS 90.100 et seq.) general termination procedures and the FED (forcible entry and detainer) procedural rules in ORS Chapter 105 that govern court action.