§ IL Illinois
County permits
Lake County
Lake County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Lake County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Lake County Planning, Building & Development
- Online portal
- Lake County Land Development Portal ↗
- Phone
- (847) 377-2600
- Address
- 500 W. Winchester Road, Libertyville, IL 60048
§ 02 Jurisdictions
Cities in Lake County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Lake 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.