County Building Permits

St Louis County, MO - 2026 Building Permit Guide

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

Missouri Updated March 2026

Important: St Louis 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 St Louis County

Permit authority
Website
Contact county for details

Jurisdictions in St Louis County

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

Unincorporated St Louis County Permit guide → Ballwin Permit guide → Bel-Nor Permit guide → Bel-Ridge Permit guide → Bella Villa Permit guide → Bellefontaine Neighbors Permit guide → Bellerive Acres Permit guide → Berkeley Permit guide → Beverly Hills Permit guide → Black Jack Permit guide → Breckenridge Hills Permit guide → Brentwood Permit guide → Bridgeton Permit guide → Calverton Park Permit guide → Champ Permit guide → Charlack Permit guide → Chesterfield Permit guide → Clarkson Valley Permit guide → Clayton Permit guide → Cool Valley Permit guide → Country Club Hills Permit guide → Country Life Acres Permit guide → Crestwood Permit guide → Creve Coeur Permit guide → Crystal Lake Park Permit guide → Dellwood Permit guide → Des Peres Permit guide → Edmundson Permit guide → Ellisville Permit guide → Eureka Permit guide → Fenton Permit guide → Ferguson Permit guide → Flordell Hills Permit guide → Florissant Permit guide → Frontenac Permit guide → Glendale Permit guide → Grantwood Village Permit guide → Green Park Permit guide → Greendale Permit guide → Hanley Hills Permit guide → Hazelwood Permit guide → Hillsdale Permit guide → Huntleigh Permit guide → Jennings Permit guide → Kinloch Permit guide → Kirkwood Permit guide → Ladue Permit guide → Lakeshire Permit guide → Manchester Permit guide → Maplewood Permit guide → Marlborough Permit guide → Maryland Heights Permit guide → Moline Acres Permit guide → Normandy Permit guide → Northwoods Permit guide → Norwood Court Permit guide → Oakland Permit guide → Olivette Permit guide → Overland Permit guide → Pacific Permit guide → Pagedale Permit guide → Pasadena Hills Permit guide → Pasadena Park Permit guide → Pine Lawn Permit guide → Richmond Heights Permit guide → Riverview Permit guide → Rock Hill Permit guide → Shrewsbury Permit guide → St. Ann Permit guide → St. John Permit guide → Sunset Hills Permit guide → Sycamore Hills Permit guide → Town and Country Permit guide → Twin Oaks Permit guide → University City Permit guide → Uplands Park Permit guide → Valley Park Permit guide → Velda City Permit guide → Velda Village Hills Permit guide → Vinita Park Permit guide → Warson Woods Permit guide → Webster Groves Permit guide → Wellston Permit guide → Westwood Permit guide → Wilbur Park Permit guide → Wildwood Permit guide → Winchester Permit guide → Woodson Terrace 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 Missouri Resources

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

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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.