§ TN Tennessee
County permits
Williamson County
Williamson County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Williamson County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Williamson County Building Codes
- Online portal
- Williamson County IDT Plan Review ↗
- Phone
- 615-790-5718
- Address
- 1320 West Main Street, Franklin, TN 37064
§ 02 Jurisdictions
Cities in Williamson County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Williamson County, Tennessee. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.