§ WA Washington
County permits
King County
King County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated King County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- King County Department of Permitting and Environmental Review (DPER) - Permitting Division (now part of Department of Local Services)
- Phone
- 206-477-3675
- Address
- King County Chinook Building, 401 5th Ave, Suite 100, Seattle, WA 98104
§ 02 Jurisdictions
Cities in King County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for King County, Washington. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.