§ IL Illinois
County permits
Piatt County
Piatt County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Piatt County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Piatt County Zoning Office
- Website
- Piatt County Zoning ↗
- Online portal
- Piatt County Zoning ↗
- Phone
- (217) 762-3111
- zoning@piattcounty.org
- Address
- Piatt County Courthouse, Room 105, 101 W. Washington, Monticello, IL 61856
§ 02 Jurisdictions
Cities in Piatt County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Piatt 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.