Building permits, zoning and land rules in Crawford County, Missouri

Unincorporated Crawford County does not have a building-codes program that requires a permit for ordinary construction^1,7. Missouri law fits that pattern: only counties of the first and second classification can adopt a building-permit program under RSMo 64.170, and a county that had not adopted one before August 28, 2001 needs voter approval to start¹². A floodplain development permit can still be required for construction, renovation or improvement in a mapped floodplain, including rehab work on a flooded home¹. Missouri also exempts farm buildings used for agriculture in unincorporated areas outside the mapped flood hazard area from county building-code powers, though that does not waive other state or federal rules¹³. Inside Cuba, the city requires a building permit for fences and walls; the county answer above covers only unincorporated land¹⁴.

Crawford County has no planning, zoning or building department; the closest thing to a general land-use contact is the Crawford County Commission at the Crawford County Courthouse, 302 W. Main St., #AS, Steelville, MO 65565, phone (573) 775-2376¹⁵. The Commission is made up of a Presiding Commissioner elected countywide and two Associate Commissioners elected by district, and it represents the county on regional bodies including the Meramec Regional Planning Commission¹⁵. MRPC itself, at 4 Industrial Drive, St. James, MO 65559, phone 573-265-2993, administers Crawford County's floodplain management program and is the office to contact about a floodplain development permit¹. A floodplain permit application goes to MRPC's administrator first and then to the County Commission for final approval before construction can begin¹.

No official source confirms that Crawford County has adopted countywide zoning for unincorporated land, and the county's own website lists no planning or zoning department⁷. Missouri lets a county adopt zoning under RSMo 64.845 to 64.880, but only after county voters approve it, so the statute alone does not show Crawford County holds that power¹⁶. Cities are different: Cuba zones its land by district, including an R-1 single- and two-family residential district³, and Bourbon publishes its own zoning regulations⁴. We found no minimum lot size, setback, lot-coverage or building-height rule for unincorporated Crawford County, so treat those as unconfirmed and ask the County Commission before you design around a number¹⁵.

The Crawford County Health Department is the local septic authority, and the county's Onsite Wastewater Ordinance may add requirements beyond Missouri's minimum construction standards². A permit is generally required before installing or repairing an onsite wastewater system, and Missouri exempts some single-family residential lots; because the county has its own ordinance, the three-acre state exemption may not apply, so confirm with the Health Department before relying on it^17,18. Do not start work until the Health Department issues a permit or confirms an exemption¹⁹. State DHSS regulates single-family residential systems and domestic systems up to 3,000 gallons per day, while DNR covers larger systems and certain lagoons². In some incorporated cities the local authority sends septic permitting back to DHSS, so confirm which office applies to your address². A privy is not recognized as sewage disposal for a continuously occupied dwelling²⁰. State septic application fees have been suspended since August 28, 2026⁸.

Inside the City of Cuba, recreational vehicles may not be occupied as living quarters anywhere in the city limits¹¹. That city rule does not apply automatically to unincorporated Crawford County, where we could not confirm a rule allowing or prohibiting long-term RV occupancy^7,11. Tiny-home and manufactured-home occupancy also remain unconfirmed for unincorporated land, so ask the Crawford County Commission about the parcel before buying with plans to live in any of these structures¹⁵.

1. Ask MRPC whether the parcel is in a mapped floodplain; if it is, obtain approval before building and provide the required elevation certificate afterward¹.
2. Confirm jurisdiction with the County Commission; ordinary construction on unincorporated land does not require a county building permit¹.
3. Ask the Health Department what the county septic ordinance requires, and obtain a construction permit or written confirmation of an exemption before work^2,19.
4. Arrange water: landowners may install their own well or pump without a permit, but a non-restricted well installation permit is required to construct or repair a water well otherwise, and a contractor needs a restricted permit⁹.
5. Submit an online request for each driveway built or modified within MoDOT right-of-way; plans, drainage analysis or a traffic study may also be required⁶.
6. If the project disturbs one or more acres, Missouri's land-disturbance stormwater permit applies; register through MoGEM and apply electronically because paper applications are no longer processed²¹.

Only about 4% of Crawford County soils lack severe limitations for a conventional septic drain field, so make the Health Department's site and system requirements an early contingency^2,22. Crawford County is 75.2% wooded, and 63.3% of its land has a slope of 15% or less, so inspect the actual building area, access route and clearing needs²². Ask MRPC about floodplain status; project maps for applicable reviews may need to show the 100- and 500-year floodplains, stream buffers, flood-prone ground and erosion areas²³. Missouri's land-disturbance stormwater permit for private projects costs $500 for 1 to under 5 disturbed acres, $600 for 5 to under 10, and $750 for 10 to 25; the separate area-wide permit is for governments only²¹. For road access, distinguish MoDOT right-of-way from county-maintained roads because the MoDOT permit rule covers only its right-of-way, while a county-road driveway rule could not be confirmed⁶.