§ IL Illinois
County permits
DeKalb County
DeKalb County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated DeKalb County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- DeKalb County Community Development Department
- Website
- Building Permits ↗
- Online portal
- Building Permits ↗
- Phone
- 815-895-7188
- Address
- 200 North Main Street, Sycamore, IL 60178
§ 02 Jurisdictions
Cities in DeKalb County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for DeKalb 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.