What are the landlord-tenant laws in Seattle, Washington?

Seattle landlords must follow Washington state law covering security deposits (capped at 2 month(s) of rent, returned within 21 days), eviction notice requirements, rent increase rules, plus local rent control ordinances. Violations can result in penalties of $5,002+.

What is the maximum security deposit in Seattle?

Seattle landlords can charge up to 2 month(s) of rent as a security deposit. At the median 2BR rent of $2,501/month, the maximum deposit is $5,002. The deposit must be returned within 21 days after move-out.

How much notice is required for rent increases in Seattle?

Landlords must provide 30 days' written notice before raising rent. Failure to comply can void the increase.

Seattle · Washington

Seattle, WA Landlord Laws 2026

Every housing law that applies to Seattle landlords — security deposits, eviction rules, rent increases, and more. Updated for 2026.

Based on Washington state law + Seattle local ordinances.

Seattle Rental Market in 2026

$2,501

median 2BR rent

755,078

population

$5,002

max security deposit

Seattle landlords must comply with Washington state landlord-tenant laws as well as local rent control ordinances. At a median 2-bedroom rent of $2,501/month, understanding deposit caps, notice periods, and eviction rules can save you thousands in penalties.

Local Housing Market Data

The HUD Fair Market Rent for a 2-bedroom in Seattle is $2,501/month, which affects Section 8 voucher amounts and affordable housing calculations.

Key Takeaways for Seattle Landlords

Security deposit: Capped at 2 month(s) of rent ($5,002 at median rent). Must return within 21 days or face penalties up to $5,002.
Local rent control: Seattle has additional local regulations beyond state law. See details below.

Washington Laws That Apply in Seattle

HB 1217 — Rent Stabilization Act

Wash. Rev. Code §59.18.170 et seq. (as amended)

Statewide rent cap (7% + CPI) and just cause eviction protections. Signed May 2025. New construction exempt for 12 years.

Washington Residential Landlord-Tenant Act

Wash. Rev. Code §59.18.010 et seq.

Comprehensive landlord-tenant law covering security deposits, habitability, eviction, and tenant rights.

Seattle Landlord Law Topics

Click any topic below for detailed Seattle-specific rules, deadlines, penalties, and free compliance tools.