All Laws Decoded

King County Tenant Ordinance

King County (Seattle) adds these tenant protections on top of Washington landlord-tenant law — applies Unincorporated King County only (not cities such as Seattle, Bellevue, Kent).

Law: King County tenant protections (Ordinance 19311, 2021; King County Code ch. 12.25)

Just cause for evictionLandlord needs a listed cause to terminate or not renew; written notice required before filing. Nonpayment of rent: 30-day notice; owner/family move-in or sale of single-family home: 90 days; substantial rehab, demolition or condo conversion: 120 days.
Rent increase notice120 days' notice for increases over 3%; 30 days for income-based rent. No increase while unit has uninhabitable/defective conditions.
Move-in fees and depositsMove-in fees plus security deposit capped at one month's rent (except income-based rent); payable in installments (6 monthly for leases of 6+ months, 2 for shorter/month-to-month).
Late feesLate fees/costs for nonpayment capped at 1.5% of monthly rent.
ScreeningLandlord may not require a Social Security number (may request one).
Standardized eviction noticesOrdinance 19311 requires the King County Executive to develop standardized eviction notices for landlords to use when terminating a tenancy.

County-level rules for unincorporated areas; city ordinances (e.g. Seattle) are separate.

← Eviction in King County (Seattle)

General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.