Unincorporated Mitchell County, Texas has no county building-permit requirement and no zoning ordinance, because Texas gives counties zoning and building authority only in narrow situations that don't apply here123. Mitchell County itself is the state-authorized agent for septic (OSSF) permits across the entire county, except inside the city of Colorado City, where TCEQ's own regional office handles them directly4. Because the county has no zoning, no county rule restricts RV living, tiny homes or manufactured homes on your own land3.
At a glance
- Building permit
- Not required in unincorporated Mitchell County1
- Zoning
- No county zoning ordinance; Texas zoning power applies to counties only in narrow situations that don't cover Mitchell County25
- Septic
- Mitchell County is the TCEQ-authorized OSSF agent countywide, except inside Colorado City4
- RV, tiny home or manufactured home
- Not restricted by any county zoning rule, because the county has none3
- Owner-builder exemption
- Not documented; the county has no building-permit program to exempt from6
- Minimum lot size / setbacks
- None set by the county; Mitchell County has no zoning authority to set them3
- County building/fire-code authority
- Limited to counties over 250,000 people; Mitchell County's population of 9,075 falls far short78
Who to call
Also useful
Mitchell County Judge's Office
County administration and the Commissioners Court; the general starting point for anything not posted online, including floodplain questions and who administers septic applications
349 Oak Street, Colorado City, TX 79512
Also useful
Mitchell County Clerk's Office
Land records, plat filing and elections; where a subdivision plat is recorded
349 Oak Street, Room 103, Colorado City, TX 79512
Roads & driveways
Mitchell County Commissioners Court (Precinct Roads)
County roads are maintained precinct by precinct under four elected commissioners rather than one countywide road department; the County Judge's Office can identify which precinct covers a given parcel
Contact details are copied from each office’s official page and were checked against it on September 24, 2026.
Do you need a building permit 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 program78. 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 them910. That doesn't mean nothing is regulated: septic systems and driveways onto state highways still carry their own requirements, covered below4.
Who do you call in Mitchell County if there's no building department?
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 questions9. The County Clerk's Office, also at the courthouse, handles land records, plat filings and elections, and is where a subdivision plat gets recorded10. 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 parcel119.
Does Mitchell County have zoning?
Mitchell County has no county zoning ordinance, and no zoning or planning office is listed on the county's website2. Texas law gives counties general zoning authority only in narrowly defined areas, such as parts of Padre Island in Cameron or Willacy County, that have nothing to do with Mitchell County5. Because Mitchell County has no zoning authority, there's no county rule setting minimum lot size, setbacks, lot coverage, building height or accessory-dwelling limits on unincorporated land, and the county doesn't restrict living in an RV, tiny home or manufactured home either3. That's a direct result of Texas law giving the county no zoning power here, not a gap in what's been researched3. Only the city of Colorado City can set zoning of its own, and only within its own city limits.
How do septic permits work in Mitchell County?
Mitchell County itself is the TCEQ-authorized agent for on-site sewage facility (OSSF) permits across the entire county, except inside the city of Colorado City, where TCEQ's own regional office handles permits directly4. Statewide, every OSSF requires a permit before construction, installation, alteration, extension or repair12. A limited exemption applies only on tracts of at least 10 acres, and only if every condition is met: a licensed site evaluator signs off, it's a single-family home, all parts of the system sit at least 100 feet from the property line, and the tract has no other dwelling12. The county's own website doesn't publish a dedicated septic or environmental office, so start with the County Judge's Office to confirm the current application process for your parcel9.
Can you live in an RV or tiny home on your land in Mitchell County?
Mitchell County has no zoning ordinance, so there's no county rule restricting RV living, tiny homes or manufactured homes on your own land3. That's a real answer, not just an absence of research: Texas law gives Mitchell County no zoning power to regulate these uses in the first place3. Statewide rules about licensed RV parks and campgrounds don't apply to living in your own RV on your own land, so don't read those as a limit here. Whatever dwelling you choose, its septic system still needs an OSSF permit through Mitchell County's own program, since that requirement doesn't depend on the structure being a conventional house4. If your land sits inside Colorado City rather than the unincorporated county, the city's own rules would apply instead2.
Building a home in Mitchell County: the steps, in order
- Confirm your parcel is in unincorporated Mitchell County rather than inside Colorado City, since city rules and septic permitting both differ there4.
- Call the Mitchell County Judge's Office to confirm current floodplain status and any other county requirements for your specific parcel before you break ground9.
- Apply for an on-site sewage facility (OSSF) permit through Mitchell County before you design your septic system, since the county is TCEQ's authorized agent for the unincorporated area4.
- If your tract is at least 10 acres, have a licensed site evaluator confirm in writing whether you qualify for the state's septic-permit exemption, since every condition has to be met12.
- If you're adding or changing access onto a state highway, submit TxDOT Form 1058 and wait for a fully executed permit before starting work13.
- If you're subdividing the land, file the plat with the Mitchell County Clerk's Office10.
What to check before you buy land in Mitchell County, Texas
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-century141516. Soils here support a conventional septic drain field on only 29% of the county's land, so plan on testing your specific parcel and budgeting for an engineered system if it doesn't pass17. The land is mostly flat, with 96.3% at 15% slope or less and just 2.6% wooded1819. Mitchell County sits about 70 miles from the nearest metro area, and its effective property tax rate runs around 2%, with a median annual bill near $1,680202122. Budget for a typical home insurance premium around $2,387 a year, and confirm your parcel's road access and whether it falls inside Colorado City before you close239.
Watch-outs
- Mitchell County's own website doesn't name a septic or environmental office, even though the county itself is TCEQ's authorized OSSF agent; confirm the current application process with the County Judge's Office rather than assuming a specific department exists94.
- Inside the city of Colorado City, septic permits go through TCEQ's regional office, not Mitchell County; confirm which side of the city line your parcel falls on before you apply4.
- County roads in Mitchell County are split across four precinct commissioners rather than one road department; the commissioner covering your parcel depends on where it sits, so confirm with the County Judge's Office before assuming who to call119.
Sources
- Mitchell County, Texas official website (2026 county census)
- Texas Local Government Code Ch. 231 (2026 county census)
- Texas law on county zoning and building authority
- TCEQ OSSF Authorized Agent search (OARS) (2026 county census)
- Local Government Code Chapter 231, County Zoning Authority (Texas statewide rule), quoted and re-checked
- (2026 county census)
- Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
- County population: Bolthole Index county data
- Mitchell County Judge's Office (co.mitchell.tx.us)
- Mitchell County Clerk's Office (co.mitchell.tx.us)
- Mitchell County Commissioners Court (Precinct Roads) (co.mitchell.tx.us)
- Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Projected mid-century days at or above 100°F: Bolthole Index county data
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Distance to the nearest metro area: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
Written September 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.