§ CA California
County permits
Napa County
Napa County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Napa County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Napa County Planning, Building & Environmental Services, Building Division
- Online portal
- Accela Online Permit Center (OPC) ↗
- Phone
- 707-253-4417
- Address
- 1195 Third Street, 2nd Floor, Napa, CA 94559
§ 02 Jurisdictions
Cities in Napa County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Napa County, California. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.