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

Unincorporated McDonald County does not run a general building-permit program: the county identifies septic installation and flood-zone construction as the exceptions¹. A new residence or building in county floodplain-administered areas needs a floodplain development permit, documented elevation at least 2 feet above Base Elevation and no change in the A-zone⁵. McDonald County does not issue certificates of occupancy; incorporated municipalities may have separate occupancy requirements⁹. Missouri exempts farm buildings and structures from regulations and permits imposed by county fire-protection or fire-prevention ordinances, but that exemption does not waive septic, floodplain or other applicable requirements¹⁰. We could not confirm general county building-inspection requirements, so ask the County Commission before designing around an assumed exemption.

For unincorporated McDonald County construction, the county identifies septic permits and floodplain development permits rather than a general residential building-permit process¹. Start septic-permit inquiries with the McDonald County Health Department at (417) 223-4351 or visit 3446 S. Business Hwy 71, Pineville, MO 64856^2,11. The department says new septic systems and repairs require permits². For floodplain status and floodplain development permits, contact McDonald County Emergency Management and the Floodplain Administrator at 417-223-7575⁵. Inside an incorporated city, ask the city about its building codes and building permits; keep wastewater questions with the Health Department until the applicable authority is confirmed^1,3. Applications for utility construction through county roads go to the County Commission¹². We could not confirm floodplain permit fees, so request the current application and fee schedule from the Floodplain Administrator.

Unincorporated McDonald County has no county planning or zoning requirements¹. Goodman and Southwest City have their own zoning inside municipal limits; start septic-permit inquiries with the McDonald County Health Department and confirm the wastewater authority for the proposed system^2,3,13,14. The county imposes no zoning-based minimum dwelling size, minimum lot size, yard setback, lot-coverage limit or building-height limit on unincorporated land¹⁵. Those answers do not erase septic, floodplain, road-access or private deed restrictions¹⁵. A county-hosted 2014 study reported that McDonald County had not adopted a building code, but we could not confirm that the historical finding remains current; ask the County Commission before designing to that assumption¹⁵.

The McDonald County Health Department says all septic systems and repairs require septic permits². Missouri assigns individual single-family systems and certain systems with flows of 3,000 gallons per day or less to DHSS or a local agency; DNR regulates direct-discharge systems, surface land application, non-individual lagoons and domestic wastewater flows above 3,000 gallons per day³. Where central sewer is unavailable, onsite wastewater treatment must meet applicable construction and permitting rules and cannot create a nuisance, health hazard or water contamination¹⁶. Missouri allows permit exemptions for some single-family lots, but we could not confirm an exemption under McDonald County's current ordinance; do not assume a state exemption overrides the department's permit requirement^2,17. Inside Pineville, private sewage disposal where public sewer is unavailable must meet the city's requirements, including DNR recommendations and any additional Health Officer requirements¹⁸. Missouri does not itself require a pre-sale septic inspection; buyer- or lender-requested evaluations need a licensed individual, and any local sale requirement remains unconfirmed—ask the Health Department¹⁹. Only 22% of McDonald County soils are rated without severe limitations for conventional drain fields, so assess the septic site before choosing the house location²⁰.

Unincorporated McDonald County has no county zoning rule restricting accessory dwellings, tiny-home occupancy, manufactured-home occupancy or temporary camping¹. The county also has no zoning-based minimum dwelling size, though septic, floodplain and private restrictions can still affect a project¹⁵. We could not confirm a separate county rule for long-term residential RV occupancy outside mapped floodplain areas, so ask the County Commission and Health Department about the proposed use and wastewater plan. Within covered floodplain zones, an RV must be on site for fewer than 180 consecutive days, be fully licensed and ready for highway use, or meet the ordinance's manufactured-home permitting, elevation and anchoring requirements⁶. A Missouri owner may install a manufactured home on their own property for their own occupancy without a state installer license; other applicable requirements remain⁷.

1. Confirm whether the parcel is inside an incorporated city, because the city may impose building permits, zoning approval and building-code rules; start septic-permit inquiries with the McDonald County Health Department^1,2.

1. Ask the Floodplain Administrator to determine floodplain status for both the building and septic site; covered construction needs documented elevation at least 2 feet above Base Elevation and a floodplain development permit⁵.

1. Have the septic site assessed early, because only 22% of county soils are rated without severe limitations for a conventional drain field²⁰.

1. Confirm the wastewater authority with the Health Department and obtain the applicable septic permit before installation or repair^2,3,17.

1. Submit any utility-construction application involving a county roadway to the County Commission¹².

1. If the driveway enters MoDOT right-of-way, obtain the state driveway permit; we could not confirm a county driveway-permit rule²¹.

1. For a well, use an appropriately permitted installer, or follow the state-law exception allowing a landowner to install their own well or pump⁸.

Start with boundary, city-limit and flood-map checks, because incorporated cities may have their own codes and county floodplain status can trigger a development permit^4,5. Test the proposed septic area before settling on a home site: only 22% of county soils are rated without severe limitations for a conventional drain field²⁰. Terrain and clearing also deserve parcel-level estimates because 56.9% of the land has a slope of 15% or less and 59.5% is wooded²⁰. A driveway on MoDOT right-of-way requires a state permit, while we could not confirm a county driveway-permit requirement²¹. The typical effective property-tax rate is about 0.5%, the median annual property-tax bill is about $723 and the typical home-insurance premium is about $2,115 per year²⁰.