§ OH Ohio
County permits
Defiance County
Defiance County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Defiance County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Defiance County Engineer
- Website
- Permit authority website ↗
- Phone
- (419) 782-4751
- Address
- 510 Court Street, Suite 201, Defiance, OH 43512
§ 02 Jurisdictions
Cities in Defiance County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Defiance 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.