County permits

Washington County

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

§ 01 Unincorporated

Unincorporated Washington County.

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

Permit authority: Washington County Zoning Office
Website: Permit authority website ↗
Phone: (618) 327-4800 ext. 345
Email: krystal.althoff@washingtonco.illinois.gov
Address: 125 W. St. Louis St., Nashville, IL 62263

Full unincorporated Washington County permit guide →

§ 02 Jurisdictions

Cities in Washington County

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

§ 03 County navigation

Information last verified for Washington 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.