Building Code and Inspections Information

Starting January 1, 2023, all residential and commercial building permits are administered by the City of Clayton.  National Inspection Corporation (NIC) is the certified agency who performs all building plans reviews and inspections services on behalf of Clayton.  NIC can be contacted directly with all building department questions at 937-433-4642 or

The City of Clayton is committed to working with business and property developers to encourage business expansion and growth in our community.  For new buildings, expansion, or renovations Clayton staff will review building plans to ensure that they meet our zoning and development criteria.  Once a Zoning Certificate has been issued, the building plans need to be submitted with a building permit application to NIC, via hard copies at the City of Clayton Government Center or online at  For more information regarding the building review and inspection process, please go to

For new commercial developments, Clayton staff will also review the Storm Water Plans for the to-be constructed facility.

Public Health:  Dayton & Montgomery County is responsible for all plumbing permits and inspections in the City of Clayton.  They can be contacted at 937-225-4421 or at their website,  

Fire Inspection

Clayton's Fire Department works with the County and will review the fire safety plans for the proposed building. They will also inspect fire suppression system during construction.

Each year, the Clayton Fire Department completes annual fire safety inspections on all the businesses located in the city as well as numerous foster and home inspections.