Disclaimer: This article is provided for general informational purposes only and is not legal advice. Seattle's rental regulations change frequently and the figures below were current as of the cited source dates. Always confirm current requirements with the Seattle Department of Construction & Inspections (SDCI), the Seattle Office for Civil Rights, or a licensed Washington attorney before acting. For help managing a Seattle rental in compliance with both city and state law, contact Wilson Management, Inc.
If you own a rental property in Seattle, complying with Washington state law is only the starting point. The City of Seattle layers a dense set of its own ordinances on top of the state's Residential Landlord-Tenant Act, and many of them are stricter than anything required statewide. From registering every unit to capping move-in costs, limiting when you can raise rent, and requiring a "just cause" to end a tenancy, Seattle's rental regulations are among the most landlord-regulated in the country.
This guide walks through the major Seattle-specific rules that go beyond state law, with sources cited inline so you can verify each one. (For the statewide foundation these rules build on, see our Washington Landlord-Tenant Law Guide.)
Rental Registration: The RRIO Program
Before you can legally rent a home in Seattle, you must register it. Seattle's Rental Registration and Inspection Ordinance (RRIO) requires owners to register all rental housing units in the city, from single-family houses to large apartment buildings. Registration is valid for two years from the date you register, and a small set of properties are exempt (such as state-licensed adult family homes and housing owned by housing authorities) (Source: Seattle SDCI, "Rental Registration & Inspection Ordinance," seattle.gov, accessed June 2026).
Registered properties must also pass a housing-and-safety inspection at least once every five to ten years against the RRIO Checklist, which is a subset of the City's Housing and Building Maintenance Code (Source: Seattle SDCI, RRIO program pages, seattle.gov, accessed June 2026). Owners who use a qualified private inspector pay a filing fee to submit the results (Source: Seattle SDCI RRIO program, seattle.gov, accessed June 2026 — the figure was listed at $63; confirm the current fee with the RRIO Helpline before relying on it).
Failing to register is not a technicality. An unregistered unit can expose the owner to penalties and can complicate the ability to enforce a tenancy, so registration should be the first step before advertising a Seattle rental.
Tenant Screening: The "First-in-Time" Rule
Most of Washington lets landlords select among qualified applicants at their discretion. Seattle does not. Under the city's First-in-Time requirement (part of the Open Housing Ordinance, SMC 14.08), landlords must offer tenancy to the first qualified applicant who submits a completed application — not the applicant the landlord prefers (Source: Seattle Office for Civil Rights, "Tenant Screening Rules (First-in-Time)," seattle.gov, accessed June 2026).
To comply, a landlord must:
- Publish the minimum screening criteria and all required documents in writing — posted in the leasing office or building and on every online listing for the unit;
- Timestamp each completed application as it arrives;
- Screen completed applications in chronological order and offer the unit to the first applicant who qualifies (Source: Seattle Office for Civil Rights and CIC Reports summary of SMC 14.08, accessed June 2026).
If a landlord needs additional information not listed in the published criteria, the applicant keeps their place in line and is given time to respond (reported as 72 hours) (Source: Seattle Office for Civil Rights / CIC Reports, accessed June 2026 — confirm the exact response window in current SMC 14.08).
Seattle's Fair Chance Housing Ordinance (SMC 14.09) separately restricts how criminal history may be used in screening, generally limiting it to a legitimate-business-reason review of the sex offender registry for adult applicants (Source: CIC Reports summary of SMC 14.09; Seattle Office for Civil Rights, accessed June 2026). The Seattle Office for Civil Rights enforces both ordinances and investigates complaints.
Deposits and Move-In Fees: Caps and Installments
Seattle caps what a landlord can collect at move-in. The security deposit and non-refundable fees combined cannot exceed one month's rent, and the non-refundable fees alone (which may only cover cleaning and screening) cannot exceed 10% of one month's rent (Source: Renting in Seattle / SDCI, "Move-In Fees and Deposits," seattle.gov, accessed June 2026). A pet deposit of up to 25% of one month's rent may be charged separately, on top of the deposit and fees (Source: Renting in Seattle / SDCI, seattle.gov, accessed June 2026).
Just as important, tenants have the right to pay these costs in installments at no extra cost. The number of installments depends on lease length (Source: Renting in Seattle / SDCI, "Move-In Fees and Deposits," seattle.gov, accessed June 2026):
| Lease length | Deposit & fees | Last month's rent | Pet deposit |
|---|---|---|---|
| 6 months or longer | 6 equal monthly payments | 6 equal monthly payments | 3 equal payments |
| 30 to 60 days | 4 equal monthly payments | N/A | 3 equal payments |
| Month-to-month | 2 equal monthly payments | N/A | 3 equal payments |
A landlord cannot charge interest on installments, cannot refuse to rent to an applicant who chooses to pay this way, and cannot charge additional fees for using the plan (Source: Renting in Seattle / SDCI, seattle.gov, accessed June 2026). Landlords and tenants may agree in writing to a different schedule.
Just Cause Eviction
Seattle's Just Cause Eviction Ordinance (SMC 22.206.160) is one of its most consequential rules. A landlord cannot end a tenancy — including declining to renew an expiring fixed-term lease — without one of the city's enumerated "just cause" reasons (Source: Seattle SDCI, "Just Cause Eviction Ordinance," seattle.gov, accessed June 2026). The ordinance lists 16 approved reasons, which include nonpayment of rent, material noncompliance with the lease, habitual late payment, the owner or an immediate family member moving in, and substantial rehabilitation or demolition (Source: Seattle SDCI, seattle.gov, accessed June 2026; SMC 22.206.160(C) for the complete list).
Because the ordinance reaches expiring term leases, a landlord must generally offer a renewal unless a just cause exists — with the required notice reported by SDCI at 60 to 90 days before expiration (Source: Seattle SDCI, "Just Cause Eviction Ordinance," seattle.gov, accessed June 2026 — confirm the exact renewal-notice window). This is a major departure from the rest of Washington, where a fixed-term lease may often simply expire.
Notice Requirements and Rent Increase Rules
Seattle's rent-increase notice requirement is dramatically longer than the state default. Landlords must give a minimum of 180 days' advance written notice before any increase in housing costs (Source: Renting in Seattle / SDCI, "Housing Cost Increases," seattle.gov, accessed June 2026).
Larger increases trigger a payment obligation. Under the Economic Displacement Relocation Assistance (EDRA) ordinance (SMC 22.12), a housing-cost-increase notice issued on or after July 1, 2022 that equals or exceeds 10% within a 12-month period requires the landlord to attach an EDRA notice. A qualifying tenant who chooses to move out in response can apply for relocation assistance, and the landlord may be required to pay up to three months of housing costs (Source: Renting in Seattle / SDCI, "Housing Cost Increases" and "Economic Displacement Relocation Assistance," seattle.gov, accessed June 2026). Eligibility is generally limited to households at or below 80% of area median income (Source: Renting in Seattle / SDCI, accessed June 2026 — confirm current income threshold and benefit calculation).
Note that statewide rent-cap legislation also applies on top of these Seattle rules; see our explainer on Washington's rent cap under HB 1217.
Winter and School-Year Eviction Protections
Seattle limits when displacement can occur during vulnerable periods. Under the winter eviction protection, low- and moderate-income renters in buildings with four or more units cannot be displaced for nonpayment between December 1 and March 1 (Source: Seattle SDCI, Just Cause Eviction Ordinance / SMC 22.205.080, seattle.gov, accessed June 2026). Eligibility has been reported as households at or below 80% of area median income (Source: WMFHA, "Seattle Passes Winter Eviction Moratorium," wmfha.org; Seattle Times coverage — confirm current income threshold and unit-count exemption in SMC 22.205.080).
Separately, the school-year eviction protection generally bars displacement of tenants who are students or school employees during the school year (Source: Seattle SDCI, SMC 22.205.110, seattle.gov, accessed June 2026 — confirm exact covered dates and who qualifies as a "student" or "educator").
These are defenses that can stop or delay an otherwise valid eviction, so timing matters when a Seattle owner needs to regain possession.
How Seattle Rules Stack on Top of WA State Law
Seattle does not replace Washington's Residential Landlord-Tenant Act — it adds to it. State law sets the floor for habitability, notice, deposits, and the eviction process; Seattle's ordinances frequently raise that floor, and where the two differ, the stricter, more tenant-protective rule generally governs inside city limits. Practically, a Seattle landlord must satisfy both sets of requirements at once. For the statewide baseline, read our Washington Landlord-Tenant Law Guide.
How Wilson Management Keeps Seattle Owners Compliant
Wilson Management, Inc. has served Bellevue and the Greater Seattle area since 1982, and managing rentals in compliance with Seattle's city ordinances and Washington state law is a core part of what we do. Our team handles RRIO registration and inspection coordination, builds first-in-time-compliant screening criteria and timestamped application workflows, structures deposits and move-in fees within the city caps (including installment options), issues proper 180-day and EDRA notices, and manages just-cause documentation so owners stay on the right side of the rules.
If you own a rental in Seattle and want it managed correctly the first time, we can help. Learn more about our Seattle property management services or request a free rental analysis.
Frequently Asked Questions
1. Do I really have to register a single rental house in Seattle?
Yes. RRIO requires registration of essentially all rental units in the city, including single-family homes, unless a specific exemption applies. Registration is good for two years (Source: Seattle SDCI, seattle.gov, accessed June 2026).
2. Can I just pick the most qualified applicant?
No. Seattle's First-in-Time rule requires you to publish your screening criteria in advance and offer the unit to the first qualified applicant in chronological order (Source: Seattle Office for Civil Rights, SMC 14.08, accessed June 2026).
3. How much can I collect at move-in?
The security deposit plus non-refundable fees cannot exceed one month's rent, and non-refundable fees alone cannot exceed 10% of one month's rent. A pet deposit of up to 25% of rent may be charged separately, and tenants can pay in installments at no extra cost (Source: Renting in Seattle / SDCI, seattle.gov, accessed June 2026).
4. How much notice do I need to give before raising the rent?
At least 180 days' written notice for any increase. Increases of 10% or more in a 12-month period can also trigger Economic Displacement Relocation Assistance (Source: Renting in Seattle / SDCI, seattle.gov, accessed June 2026).
5. Can I decline to renew a tenant's lease when it expires?
Generally only if you have one of the 16 just cause reasons. Seattle's Just Cause Eviction Ordinance applies to expiring fixed-term leases, not just month-to-month tenancies (Source: Seattle SDCI, SMC 22.206.160, seattle.gov, accessed June 2026).
6. Is there really a season when I can't evict?
For nonpayment, yes, in many cases. Low- and moderate-income tenants in buildings with four or more units have a defense to displacement between December 1 and March 1, and students and school staff have school-year protection (Source: Seattle SDCI, SMC 22.205.080 and 22.205.110, seattle.gov, accessed June 2026 — confirm current thresholds).
Talk to Wilson Management
Seattle's rental regulations are detailed, frequently updated, and carry real penalties for getting them wrong. Wilson Management, Inc. — led by President Gary E. Wilson and serving the Greater Seattle area since 1982 — manages Seattle-area rentals in full compliance with city and state law. Call (425) 453-0089, contact us, or request a free rental analysis.
Disclaimer: This article is general information, not legal advice, and may not reflect the most recent changes to Seattle or Washington law. Rules, figures, and thresholds cited here should be independently verified with SDCI, the Seattle Office for Civil Rights, or a licensed attorney before you act. Wilson Management, Inc. does not provide legal advice.
Sources
- Seattle SDCI — Rental Registration & Inspection Ordinance (RRIO), Owners & Managers: https://www.seattle.gov/sdci/codes/licensing-and-registration/rental-registration-and-inspection-ordinance/owners-and-managers
- Seattle SDCI — About RRIO: https://www.seattle.gov/sdci/codes/licensing-and-registration/rental-registration-and-inspection-ordinance
- Seattle Office for Civil Rights — Tenant Screening Rules (First-in-Time): https://www.seattle.gov/civilrights/housing-rights/tenant-screening-rules
- Renting in Seattle — First In Time: https://www.seattle.gov/rentinginseattle/housing-providers/finding-a-tenant/first-in-time
- CIC Reports — Seattle First-in-Time / Open Housing Ordinance SMC 14.08: https://www.cicreports.com/resources/data-regulations/seattle-first-in-time-requirements-open-housing-ordinance-sm-14-08/
- CIC Reports — Seattle Fair Chance Housing Ordinance SMC 14.09: https://www.cicreports.com/resources/data-regulations/seattle-fair-chance-housing-ordinance-smc-14-09/
- Renting in Seattle / SDCI — Move-In Fees and Deposits: https://www.seattle.gov/rentinginseattle/housing-providers/moving-a-tenant-in/move-in-fees-and-deposits
- Renting in Seattle / SDCI — Housing Cost Increases: https://www.seattle.gov/rentinginseattle/housing-providers/managing-the-rental-relationship/housing-cost-increases
- Renting in Seattle / SDCI — Economic Displacement Relocation Assistance: https://www.seattle.gov/rentinginseattle/housing-providers/moving-a-tenant-out/economic-displacement-relocation-assistance
- Seattle SDCI — Just Cause Eviction Ordinance: https://www.seattle.gov/sdci/codes/codes-we-enforce-(a-z)/just-cause-eviction-ordinance
- Seattle Municipal Code — SMC 22.206.160 (Municode): https://library.municode.com/wa/seattle/codes/municipal_code?nodeId=TIT22BUCOCO_SUBTITLE_IIHOCO_CH22.206HABU_SUBCHAPTER_VIDUOWTE_22.206.160DUOW
- WMFHA — Seattle Passes Winter Eviction Moratorium: https://www.wmfha.org/news/seattle-passes-winter-eviction-moratorium