Ada County

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

§ 01 Unincorporated

Unincorporated Ada County.

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

Permit authority: Ada County Development Services — Building Division
Website: COBRA (Client Online Business Records Access) ↗
Online portal: COBRA (Client Online Business Records Access) ↗
Phone: (208) 287-7900
Email: dsClientPortal@adacounty.id.gov
Address: Ada County Courthouse, Second Floor, 200 W. Front St., Boise, ID 83702

Full unincorporated Ada County permit guide →

§ 02 Jurisdictions

Cities in Ada County

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

§ 03 County navigation

Information last verified for Ada 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.