§ IL Illinois
County permits
Winnebago County
Winnebago County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Winnebago County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Building Division, Regional Planning & Economic Development
- Online portal
- Winnebago County Building Division ↗
- Phone
- (815) 319-4350
- permits@cd.wincoil.gov
- Address
- 404 Elm Street, Room 403, Rockford, IL 61101
§ 02 Jurisdictions
Cities in Winnebago County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Winnebago County, Illinois. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.