Twin Falls County

Twin Falls County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.

§ 01 Unincorporated

Unincorporated Twin Falls County.

If your property isn't inside an incorporated city, the county permit office handles your application directly.

Permit authority: Twin Falls County Building Department
Website: Twin Falls County Building Department – Applications ↗
Online portal: Twin Falls County Building Department – Applications ↗
Address: 630 Addison Ave, Twin Falls, Idaho 83301

Full unincorporated Twin Falls County permit guide →

§ 02 Jurisdictions

Cities in Twin Falls County

Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.

§ 03 County navigation

Information last verified for Twin Falls County, Idaho. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.