Miami County

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

§ 01 Unincorporated

Unincorporated Miami County.

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

Permit authority: Miami County Department of Development, Building Regulations
Website: Permit authority website ↗
Online portal: Permit portal ↗
Phone: 937-440-8121
Email: Rob England email link is published on the county page, but the visible page text does not expose the address directly
Address: 1506 One Stop Court, Suite 6, Troy, OH 45373

Full unincorporated Miami County permit guide →

§ 02 Jurisdictions

Cities in Miami County

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

§ 03 County navigation

Information last verified for Miami County, Ohio. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.