Jefferson County building permits & inspections
Find the office responsible for building permits, plan review, inspections, and zoning in Jefferson County, Missouri.
We haven’t researched an office in Jefferson County yet
Check whether your address is inside a city or town first; if it is unincorporated, the county government can tell you which office reviews building permits. These Missouri offices have full department guides:
- City of St. Louis Building Division
- Columbia, Missouri Building and Site Development
- Independence, Missouri Building Inspections Division
- Kansas City, Missouri City Planning and Development
- Lee’s Summit, Missouri Development Services
- O’Fallon, Missouri Building Division
- Springfield, Missouri Building Development Services
- St. Joseph, Missouri Building Development
Finding the right permit office
- Identify the exact property address and municipality.
- Confirm whether the city, town, township, borough, parish, county, or regional authority serves that address.
- Ask which permits, zoning approvals, plan reviews, and inspections apply to the project.
- Keep the official portal, permit number, approved plans, and inspection instructions together.
Our guide City or county: who issues your building permit? explains how to check city limits and unincorporated areas using parcel maps and tax records.
What to check in Missouri
Missouri has no statewide building code. Cities and counties adopt their own, and counties without a code before 2001 need voter approval to adopt one for unincorporated areas.
Local codes and permits. An address inside an incorporated city or another local jurisdiction may be served by a separate building department.