Lake Oswego Eviction Laws & Process

Oregon landlord guide — notices, timelines, court filing & local rules

Eviction Laws in Lake Oswego, Oregon

Lake Oswego is an affluent lake-centered suburb of about 40,000 just south of Portland, built around private Oswego Lake. It is the wealthiest city in this guide — median household income near $141,000, a poverty rate around 3 percent, and home values commonly running from $700,000 to over $1 million — with an older population (median age about 47) and the lowest renter share in this guide, roughly 28 percent. Rents are among the highest in Oregon, near $2,000, with lakefront ZIP codes above $2,200. The city straddles three counties — primarily Clackamas, with parts in Multnomah and Washington — so filing venue depends on where the property sits. For a landlord, the appeal here is a wealthy, stable, low-nonpayment-risk tenant base, though rental inventory is thin and Oregon’s statewide rules apply in full. Eviction cases are filed as Forcible Entry and Detainer (FED) actions in the appropriate county Circuit Court.

Oregon eviction law is set by the Residential Landlord and Tenant Act (Oregon Revised Statutes Chapter 90), with the court process governed by the FED statutes (ORS 105.105–105.168). A landlord must serve the correct written notice before filing. Since 2019, Oregon has had statewide rent control and just-cause eviction protections under Senate Bill 608, and recent legislation (SB 611 in 2023 and HB 2001 in 2023) tightened the rent cap and reshaped the nonpayment process. Self-help eviction — lockouts, shutting off utilities, or removing a tenant’s belongings — is illegal and carries significant statutory penalties.

The single most important current number for a Lake Oswego landlord is the rent cap: for 2026, the maximum allowable rent increase under Oregon law is 9.5 percent. That figure is recalculated and published by the Oregon Department of Administrative Services every September 30, so confirm the current year’s number before issuing any increase.

Lake Oswego & the Tri-County Area — Local Rules That Affect Landlords

Statewide Rent Control — the 2026 Cap Is 9.5%. Under SB 608 (2019) and SB 611 (2023), annual rent increases are capped at the lesser of 7 percent plus inflation (CPI) or a 10 percent hard cap — 9.5 percent for 2026. The cap applies to units 15 years or older (newer construction is exempt), you may raise rent only once in any 12-month period, no increase is allowed in the first year, and you must give 90 days’ written notice. Raising rent above the cap exposes you to liability for three months’ rent plus the tenant’s actual damages — and at $2,000-plus rents, that is a costly mistake to make.

Three Counties — File in the Right Circuit. Lake Oswego is unusual in spanning three counties. Most of the city is in Clackamas County, but parts lie in Multnomah County and Washington County. File your FED in the Circuit Court for the county where the property is actually located: Clackamas County Circuit Court (in Oregon City) for most of Lake Oswego, Multnomah County Circuit Court (in Portland) or Washington County Circuit Court (in Hillsboro) for the portions in those counties. Confirm the county before filing — a wrong-county filing wastes weeks.

No Local Ordinance Layer — Baseline Oregon Rules Apply. Lake Oswego imposes no Portland- or Eugene-style relocation-assistance, screening (FAIR), or municipal deposit ordinance, so compliance is the statewide ORS Chapter 90 framework without an extra city layer.

A Premium, Low-Risk, Low-Turnover Market. Lake Oswego’s renters are relatively few but high-income and settled, with low nonpayment risk and long tenancies. In practice you may rarely use the eviction process here — but the just-cause rules still attach once a tenancy passes 12 months, and the rent cap still limits increases on this expensive housing stock, so manage the tenancy by the book even in a low-drama market.

Just-Cause Eviction After 12 Months (ORS 90.427). During the first 12 months you may end a month-to-month tenancy without cause on 30 days’ notice. After 12 months you need a qualifying reason — tenant-based (nonpayment, lease violation) or a qualifying landlord reason (landlord/family move-in, sale to an occupying buyer, demolition, major repairs), the latter requiring 90 days’ notice and one month’s rent relocation assistance for landlords with more than four units. Document the qualifying reason.

Nonpayment of Rent — Mind the Procedure. Rent has a mandatory 4-day grace period before a notice can be served. You then serve a 10-day notice (on or after the 8th day of the rental period) or a 13-day notice (on or after the 5th day), and the notice must include the mandatory HB 2001 (2023) “eviction for nonpayment” disclosure with rental-assistance information in multiple languages — courts dismiss FED cases that omit it. The court must dismiss the case if the tenant pays in full or rental assistance is received before judgment. You cannot evict for unpaid late fees alone, and accepting partial rent can invalidate your notice.

Source-of-Income & Expanded Fair Housing. Beyond the federal protected classes, Oregon law (ORS Chapter 659A) bars discrimination based on source of income — even in a high-end market, you cannot refuse a Section 8 voucher or other subsidy — plus sexual orientation, gender identity, marital status, survivor status (domestic violence, sexual assault, stalking), and, under SB 599 (2025), immigration or citizenship status. Apply the same standards to every applicant.

Security Deposits. Oregon has no statewide deposit cap, but you must return the deposit with a written itemized accounting within 31 days of the tenancy ending (ORS 90.300). Normal wear and tear is not deductible — a point that matters on high-value homes where repair costs run high. Lake Oswego adds no extra municipal deposit rules.

Self-Help Eviction Is Illegal. Lockouts, removing belongings, and utility shut-offs are prohibited (ORS 90.375) and expose you to substantial damages. Only the sheriff, under a court-issued writ, can remove a tenant.

Free Legal Help & Rent Assistance. Legal Aid Services of Oregon and the Oregon Law Center assist qualifying low-income tenants, and Clackamas County programs offer rent assistance. Because a nonpayment FED must be dismissed if rental assistance arrives before judgment, that route can resolve a rare nonpayment matter without a contested case.

Clackamas County Circuit Court — Where Most Lake Oswego Landlords File

Most Lake Oswego landlords file FED (eviction) actions in the Clackamas County Circuit Court at the Clackamas County Courthouse, 807 Main Street, Oregon City, OR 97045 — confirm the current filing location and FED procedures with the court before filing, as Clackamas County has been transitioning courthouse facilities. For properties in the Multnomah County portion of the city, file in the Multnomah County Circuit Court (Central Courthouse, Portland); for the Washington County portion, file in the Washington County Circuit Court (Hillsboro). The FED filing fee is roughly $88, and Oregon’s FED process is fast — a first appearance is typically set about a week after filing. If the tenant contests, the court schedules a trial; if the landlord prevails, the court issues a judgment of restitution and the sheriff executes the writ. Remember that the case will be dismissed if the mandatory HB 2001 nonpayment notice was not attached, or if the tenant pays in full or rental assistance is received before judgment. Self-help eviction is illegal — only the sheriff may remove a tenant under a court-issued writ.