Missouri building permit offices

This directory lists 9 counties in Missouri whose own permit page we retrieved and read. Each entry links to that official source rather than to a copy of it, and states the date it was last checked.

Which building code applies in Missouri?

Missouri has no statewide building code; local jurisdictions adopt their own. That has a practical consequence people regularly get caught by: adoption happens jurisdiction by jurisdiction, so two properties a short drive apart can sit under different code editions with different local amendments. Guidance written for a neighbouring county may simply not apply to yours.

The practical rule in Missouri is to confirm the adopted edition with the office that has jurisdiction before relying on anything — including anything on this site. We name the office and link its source; the edition it currently enforces is a question only it can answer.

Separately from the code, permit fees, exemption thresholds and review times are set locally everywhere in Missouri. We do not publish any of those figures — see our methodology for why.

Counties covered in Missouri

Who issues building permits in Missouri?

Counties issue permits for unincorporated territory. If a property sits inside an incorporated city or town, that municipality issues the permit and the county has no role in it. Applying to the wrong one is the most expensive routine mistake in permitting, because you do not find out until intake rejects the package.

A city mailing address is not evidence either way. Postal routes and municipal boundaries are drawn by different organisations for different reasons and frequently disagree, which is why properties on the edge of a growing Missouri city so often turn out to be unincorporated. Look the property up in the county parcel or GIS viewer; the record names the jurisdiction.

Other agencies can hold part of the review even once the building department is settled: the health department for septic and wells, public works or the state transportation department for driveway access and right-of-way work, the fire district for access and sprinklers, and state agencies for elevators, boilers, floodplain and coastal work. Each runs on its own timeline, so start them in parallel. Our jurisdiction helper works through the indicators.

Are Missouri permit records public?

Yes. Permit records are public records in Missouri, and you do not need to own the property to obtain them — which is exactly how buyers and their inspectors check a house before closing.

None of the counties listed here publish an online permit search that we could verify, so records are obtained by request to the office. Give the property address and parcel number and ask for the permit history including inspection records.

Search by parcel number rather than street address wherever the option exists. Addresses are renumbered and re-suffixed over the decades; parcel numbers usually survive. And a search that returns nothing on an older property is weak evidence of unpermitted work — most jurisdictions loaded only records created in their current software, with cut-offs in the 1990s and 2000s being normal.

Counties not listed here

This directory lists only jurisdictions whose official permit page we could retrieve and read. Where a county is missing it is because its page was unreachable, blocked automated retrieval, or carried too little detail to describe honestly — not because it does not issue permits. We would rather list nothing than list an office we have not confirmed. The standard is set out here, and you can send us a missing office.

Missouri building permit FAQ