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

Unincorporated Mitchell County has no county building-permit requirement¹. Texas law gives building- and fire-code authority to counties only above a 250,000-population threshold, or to a county adjacent to one; Mitchell County's population of 9,075 is far below that mark, so the county has no general building-permit program^8,9. The county's own website lists the County Judge, County Clerk, Commissioners Court and several other offices, with no building department or code-enforcement office among them^10,11. Separate permits still apply to septic work and to new or modified driveways connecting to a state highway^4,12.

Mitchell County has no building or planning department, so there's no single permit office to call before you build¹. The County Judge's Office, at the courthouse in Colorado City, oversees county administration and the Commissioners Court, and is the right place to start for anything not posted on the county's website, including floodplain questions¹⁰. The County Clerk's Office, also at the courthouse, handles land records, plat filings and elections, and is where an approved subdivision plat gets recorded¹¹. County roads are maintained precinct by precinct rather than by a single road department; the County Judge's Office can point you to the commissioner whose precinct covers your parcel^10,13.

Unincorporated Mitchell County has no county zoning ordinance². As a result, the county sets no zoning-based minimum lot size, setbacks, lot coverage, building height or accessory-dwelling limits on unincorporated land, and no county zoning rule restricts an RV, tiny home or manufactured home there³. Colorado City is different: the city divides its corporate limits into eight zoning districts under its own zoning ordinance, which the city administers and enforces⁶. A Colorado City parcel therefore needs a city zoning check before construction or a change in land use, while septic permits for that parcel are a separate matter handled through TCEQ⁵, while we could not confirm comparable municipal rules for Loraine or Westbrook⁶.

A permit and approved plan are generally required to construct, alter, repair, extend or operate a septic system or holding tank in Mitchell County⁴. Mitchell County is the TCEQ-authorized agent outside Colorado City, while TCEQ Region 03 in Abilene handles permits inside Colorado City⁵. A narrow exemption may apply to a single-family home on at least 10 acres only when every state condition is met, including a licensed site evaluation, at least 100 feet between every system component and the property line, on-site effluent disposal, no nuisance or groundwater pollution, and no other dwelling on the tract⁴. The county website does not identify the office that accepts applications, so ask the County Judge's Office for the current process and fee before commissioning a design¹⁰.

On unincorporated land, Mitchell County has no zoning rule restricting RV living, tiny-home occupancy or manufactured-home occupancy³. Septic remains a separate issue: an OSSF permit and approved plan are generally required even when the dwelling is not a conventional site-built house⁴. Inside Colorado City, the city's zoning ordinance applies, so the unincorporated-county answer cannot be used to approve an RV, tiny home or manufactured home within city limits⁶. We could not confirm comparable municipal rules for Loraine or Westbrook; ask the relevant city before relying on the county rule.

1. Confirm whether the parcel is unincorporated or inside Colorado City, because Colorado City has city zoning and a different septic authority^5,6.
2. Ask the Mitchell County Judge's Office about floodplain requirements and who currently accepts septic applications¹⁰.
3. Obtain the required septic permit and approved plan before construction, alteration, repair or extension of the system; ask about the narrow exemption only if the tract has at least 10 acres and one single-family dwelling⁴.
4. For a new or modified driveway onto a state highway, submit Permit Form 1058 and satisfy TxDOT's design, drainage and safety requirements¹².
5. If you plan to divide a tract outside Colorado City, Texas law generally requires a subdivision plat approved by the Mitchell County Commissioners Court by order, with exceptions such as divisions where all lots exceed 10 acres¹⁴. Plats are recorded with the Mitchell County Clerk's Office¹¹.

Mitchell County averages 20.5 inches of rain a year, with severe drought in 28.9% of recent years, and summers trending hotter, with a projected 51.2 days a year at or above 100°F by mid-century⁹. Only 29% of the county's soils avoid severe limits for a conventional septic drain field, so test the parcel before choosing a system⁹. The land is mostly flat, with 96.3% at 15% slope or less and just 2.6% wooded⁹. The nearest city of 100,000 or more is about 70 miles from the county center, while the effective property-tax rate is around 2% and the median annual bill is about $1,680⁹. Before closing, determine whether access meets a county road or a state highway, because a new or modified state-highway driveway requires Permit Form 1058¹². Farm and ranch land can qualify for agricultural special appraisal if it has been in agricultural use for at least 5 of the past 7 years, and a change to non-agricultural use triggers rollback tax for each of the prior 3 years¹⁵.