County permits

St. Louis City

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

§ 01 Unincorporated

Unincorporated St. Louis City.

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

Permit authority: St. Louis County Department of Transportation and Public Works, Code Enforcement / Permit Processing
Website: https://aca.stlouisco.com/CitizenAccess/Cap/CapHome.aspx?TabName=PublicWorks&module=PublicWorks ↗
Online portal: https://aca.stlouisco.com/CitizenAccess/Cap/CapHome.aspx?TabName=PublicWorks&module=PublicWorks ↗
Phone: (314) 615-5184
Email: Not clearly published for general county permit intake on the main permit page; use portal and county phone
Address: 41 S. Central Ave., Clayton, MO 63105

Full unincorporated St. Louis City permit guide →

§ 02 Jurisdictions

Cities in St. Louis City

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

§ 03 County navigation

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