County Building Permits

Miami County, OH - 2026 Building Permit Guide

Building permit information for unincorporated Miami County and all incorporated cities. Find your jurisdiction's permit authority, application process, fees, and requirements.

Ohio Updated March 2026

Important: Miami County issues building permits only for properties in unincorporated areas of the county. If your property is inside an incorporated city, select your city below — that city's building department handles your permits, not the county.

Unincorporated Miami County

Permit authority
Miami County Department of Development, Building Regulations
Online portal
Permit portal
Phone
937-440-8121
Address
1506 One Stop Court, Suite 6, Troy, OH 45373

Jurisdictions in Miami County

Select your jurisdiction for local permit authority, portal links, application steps, fees, and inspection requirements.

Unincorporated Miami County Permit guide → Bradford Permit guide → Casstown Permit guide → County Baseline Permit guide → Covington Permit guide → Fletcher Permit guide → Laura Permit guide → Ludlow Falls Permit guide → Piqua Permit guide → Pleasant Hill Permit guide → Potsdam Permit guide → Tipp City Permit guide → Troy Permit guide → West Milton Permit guide →

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the relevant city or county department before applying.

Related Ohio Resources

License Requirements Verify your contractor's Ohio license → Contract Template Free homeowner-contractor agreement →

Need help with your project?

Navigating permits in Miami County can be complicated.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authorities listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.