§ MO Missouri
County permits
Knox County
Knox County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Knox County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- No public county building department was found on the official Knox County website; county-level contacts route through Knox County Commission, while Knox County Health Department Environmental Services handles countywide on-site wastewater consultation and complaint intake
- Online portal
- No public county building permit portal found ↗
- Phone
- 660-397-2688
- knoxcomm@marktwain.net
- Address
- Knox County Courthouse, 107 N 4th St, Suite F, Edina, MO 63537
§ 02 Jurisdictions
Cities in Knox County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Knox County, Missouri. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.