Building permits, zoning and land rules in Midland County, Texas

Midland County does not publish a general county building-permit requirement for home construction in unincorporated areas; the county's published permit process instead covers public works, subdivisions, plats, driveways and right-of-way work¹. Development in a mapped flood hazard area also needs a Midland County floodplain permit⁹. A driveway connecting to a county road outside Midland city limits does require a Public Works permit¹. Fire and life-safety regulation is separate: Midland County directs addresses outside city limits to the Texas State Fire Marshal's Office for building and fire-code permits, inspections, violations and certificates of occupancy⁸. The State Fire Marshal uses state fire and life-safety inspection standards in unincorporated areas, but that partial fire-code coverage is not the same as Midland County adopting every model building code². Ask the State Fire Marshal whether a particular project needs its review before treating the absence of a published general county permit as permission to build.

Midland County does not identify a single building department for every rural construction approval; responsibilities are split by subject¹. Midland County Public Works issues driveway permits for a connection to a county road outside Midland city limits, charging $50 per tie-in, and lists its office at 500 N Loraine St., Suite 1100, Midland, TX 79701¹. Driveway applications are due by 3 p.m. on the Tuesday before a Commissioners Court meeting¹. The City of Midland Health Department's Environmental Section permits and inspects OSSFs through an interlocal agreement with Midland County, for addresses in the city and outside it; its listed phone is (432) 681-7613^5,6. Midland County directs building and fire-code questions for addresses outside city limits to the Texas State Fire Marshal's Office at 512-676-6800⁸. Start with the office tied to the work, and ask whether subdivision, plat, floodplain or right-of-way requirements also affect the parcel because the county's published process covers only part of the approvals a project may need¹.

Unincorporated Midland County has no county planning-and-zoning requirements or published county zoning districts³. County zoning therefore does not set minimum lot size, setbacks, lot coverage, building height, or the occupancy of an RV, tiny home or manufactured home on unincorporated land⁷. Midland County also sets no zoning-based minimum dwelling size there³. Those answers do not erase other controls: septic acreage, retention ponds, subdivisions, floodplains and state fire rules can still affect a project^1,2,3. City of Midland regulations may also apply within the city's extraterritorial jurisdiction, so verify the parcel's jurisdiction before relying on the county answer⁴. If land is being divided for agricultural use, a platting exception may be available in some circumstances, but it is conditional rather than a blanket agricultural exemption³.

The City of Midland Health Department's Environmental Section permits and inspects OSSFs through an interlocal agreement with Midland County^5,6. The residential OSSF application fee is $150¹⁰. An applicant generally needs a site and soil evaluation, planning materials, the appropriate fee and a Midland County floodplain permit application before receiving authorization to construct¹¹. Private-well service is contemplated on the application, so an OSSF can support an off-grid sanitation plan, but the system still must follow its approved design, inspection and local health requirements⁶. Only 37.8% of county soils are rated without severe limitations for a conventional drain field, making parcel-specific evaluation especially important¹². Before covering an installation, contact the office at least four working days ahead for inspection⁶. A state permit exemption may apply to a qualifying tract of at least 10 acres, but only when every condition is met, including the site evaluation, a single dwelling and required property-line separation; do not assume acreage alone creates an exemption¹¹.

County zoning does not restrict RV living, tiny-home occupancy, manufactured homes or temporary camping on unincorporated Midland County land⁷. Midland County likewise has no zoning-based minimum dwelling size in unincorporated areas³. That answer is limited to county zoning: septic, floodplain, subdivision, access and fire-code requirements can still control how a site is developed^1,2,3,6. Certificates of occupancy are associated with the State Fire Marshal's building and fire-code work outside city limits, but the county source does not establish that every unincorporated residence needs one⁸. City regulations may apply in the City of Midland's extraterritorial jurisdiction⁴. Before moving an RV onto a parcel or ordering a tiny home, confirm the parcel's jurisdiction and ask the State Fire Marshal whether the proposed structure or use triggers fire-code or occupancy review.

1. Confirm whether the parcel is outside city limits and whether City of Midland extraterritorial-jurisdiction rules apply⁴.

1. Ask Midland County Public Works whether subdivision, plat, floodplain, right-of-way or driveway approvals affect the project; the published county process is partial and additional application requirements may apply¹.

1. Ask the Texas State Fire Marshal's Office whether the proposed building needs fire-code, inspection or occupancy review^2,8.

1. Arrange a site and soil evaluation, then submit the OSSF application and required materials to the City of Midland Health Department's Environmental Section^6,11.

1. Obtain a Public Works permit for a driveway tying into a county road, or follow the separate TxDOT process for state-highway access^1,13.

1. Have the septic installation inspected before it is covered⁶.

Annual precipitation is about 14.5 inches, and severe drought occurs in 33.5% of years, so verify a private well's yield before depending on it¹². The septic application allows either a private well or public water source, but we could not confirm a general countywide rule requiring connection to public water or sewer; ask the City of Midland Health Department about the parcel's service plan⁶. Only 37.8% of county soils are rated without severe limitations for a conventional drain field, and the OSSF process requires a site and soil evaluation^11,12. Check flood status, legal access and driveway jurisdiction before closing because floodplain and right-of-way approvals can be part of the county process¹. Confirm whether city extraterritorial-jurisdiction rules apply, and review deed or subdivision restrictions separately from county zoning^3,4. The effective property-tax rate is about 1.3%, with a median annual bill near $3,697¹².