Building permit fees in Seattle, WA

Short answer: We verified 1 homeowner permit fee for Seattle from official fee schedules; the table quotes each one. Fees change, so confirm the current amount with Seattle Department of Construction and Inspections (SDCI); plumbing permits by Public Health – Seattle & King County.

Verified permit fees in Seattle
Project	Fee	Official source
Roof replacement	Re-roof permit (when needed): flat fee of half the SDCI base fee plus state surcharge and technology fee.	“It costs half of our base fee plus the state surcharge.” Source · checked 2026-10-19

Not yet verified: ADU or garage conversion, Deck, Driveway or patio, Electrical panel upgrade, EV charger, Fence, HVAC / AC replacement, Interior / bathroom remodel, Pool or hot tub, Retaining wall, Shed, Siding replacement, Solar panels, Water heater replacement, Window and door replacement. See the official fee schedule.

All Seattle permit rules

Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.