Bathroom Remodel Permit Requirements in Seattle, WA
Seattle has its own building code based on IRC/IBC with local amendments. Seismic Design Category D. Energy code stricter than base IECC. Rain/drainage requirements for all new construction.
When you DON'T need a permit
Cosmetic bathroom renovations do not require a permit in Seattle, WA.
Source: Seattle Building Code / SDCI
When you DO need a permit
Moving plumbing requires permits in Seattle, WA.
Estimated fee: $180 – $600
Typical timeline: About 3 weeks
Source: Seattle Building Code / SDCI
Adding a new bathroom requires permits in Seattle, WA.
Estimated fee: $360 – $1,200
Typical timeline: About 4 weeks
Source: Seattle Building Code / SDCI
Bathroom wall removal requires a permit in Seattle, WA.
Estimated fee: $240 – $720
Typical timeline: About 3 weeks
Source: Seattle Building Code / SDCI
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Frequently Asked Questions
Estimated permit fees for Bathroom Remodel projects in Seattle, WA range from $180 – $600. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Bathroom Remodel projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Seattle can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Bathroom Remodel permits in Seattle is About 3 weeks. More complex projects may take longer if plan review is required.
Learn More About Bathroom Remodel Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Bathroom Remodel Guide →