Unincorporated Culberson County, Texas does not require a residential building permit and has no county building or planning department1. Culberson County also has no countywide zoning ordinance2. Septic (OSSF) permits come from the Texas Commission on Environmental Quality's El Paso regional office rather than a county agent3, and drilling a well in most of the county requires a permit from the Culberson County Groundwater Conservation District45.
At a glance
- Building permit
- Not required in unincorporated Culberson County1
- Zoning
- No countywide zoning ordinance found2
- Septic permits
- TCEQ's El Paso regional office (Region 6), not a county agent36
- Well permit
- Required by the Culberson County Groundwater Conservation District for a non-exempt well5
- RV living
- Unrestricted in unincorporated Culberson County7
- Tiny home
- Unrestricted in unincorporated Culberson County7
- Minimum home size
- None set in unincorporated Culberson County7
- Driveway on a state highway
- Needs a TxDOT Form 1058 permit8
Who to call
Also useful
Culberson County Judge & Commissioners Court
General county administration; the point of contact since Culberson County has no building, planning or zoning department
Culberson County Courthouse, 300 La Caverna St, Van Horn, TX 79855
Septic permits
TCEQ Region 6 (El Paso) Regional Office, OSSF program
Septic (OSSF) permits for Culberson County, where no local jurisdiction has been authorized
Well permits
Culberson County Groundwater Conservation District
Well drilling permits and groundwater withdrawal permits within the district's boundaries in Culberson County
1300 West Broadway Blvd, Van Horn, TX 79855
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Culberson County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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Do you need a building permit in Culberson County, Texas?
No. Unincorporated Culberson County does not require a residential building permit1. The county's official website lists no building, inspection or permitting department among its government offices1, and Texas counties generally lack authority to require one outside a few narrow, population-gated exceptions9. Van Horn, the county seat, is Culberson County's only incorporated community, so if your land is inside Van Horn city limits rather than the surrounding unincorporated county, check with the city separately.
Who handles permitting questions in Culberson County?
There is no dedicated building or planning department in Culberson County1. For anything the county's own pages don't cover, the Culberson County Judge and Commissioners Court at the Culberson County Courthouse are the point of contact10. Reach them at (432) 283-2059 or 300 La Caverna St, Van Horn, TX 7985510. A driveway onto a state highway is a separate process: contact the local TxDOT district office and file Form 1058 before you build it8.
Does Culberson County have zoning?
Culberson County has no countywide zoning ordinance2. Because Texas gives counties zoning power only in narrow, specifically named circumstances that do not include Culberson County, the county cannot set a minimum lot size, setbacks, a building height limit or zoning districts for unincorporated land7. That means unincorporated Culberson County has no zoning-based restriction on accessory dwellings or manufactured homes either7. Van Horn is the exception to check separately if your parcel sits inside city limits.
How do septic and well permits work in Culberson County?
Culberson County has no locally authorized septic program, so the Texas Commission on Environmental Quality's Region 6 office in El Paso is the OSSF permitting authority here rather than a county office; call it at 915-834-494936. A permit is required statewide to construct, install, alter, extend or repair an OSSF11, though a single-family home on a tract of at least 10 acres can qualify for Texas's 10-acre exemption if all TCEQ conditions are met, including keeping every part of the system at least 100 feet from the property line12. Only about 20% of Culberson County's mapped soils are free of severe limitations for a conventional septic drain field13, so get a site evaluation before you count on a standard system. A system using secondary treatment or drip irrigation must also be inspected by a maintenance company once every four months14. Drilling most wells also needs a permit: the Culberson County Groundwater Conservation District requires a well-drilling permit before a non-exempt well is drilled, completed, equipped or altered, and even an exempt well needs a registration form45.
Can you live in an RV or tiny home on your land in Culberson County?
In unincorporated Culberson County, living in an RV or a tiny home on your own land is unrestricted, because the county has no zoning ordinance to set occupancy rules for either7. The same absence of zoning means Culberson County sets no minimum dwelling size for unincorporated land7. This is a county-level answer only: it does not apply inside Van Horn, and it says nothing about deed restrictions a particular subdivision may carry.
How do you build a home in Culberson County, step by step?
- Confirm your tract is in unincorporated Culberson County rather than inside Van Horn, since the city may set its own rules2.
- Because unincorporated Culberson County has no building permit or zoning requirement, you can generally start planning construction without a county permit12.
- Get a site evaluation and apply for your OSSF (septic) permit through TCEQ's Region 6 office in El Paso, since Culberson County has no local authorized agent3611.
- If you'll drill a well, apply to the Culberson County Groundwater Conservation District for a well-drilling permit before drilling45.
- If your access road will connect to a state highway, apply to TxDOT for a driveway permit on Form 1058 through the local TxDOT district office before building the driveway8.
- For anything else, call the County Judge and Commissioners Court at (432) 283-205910.
What should you check before buying land in Culberson County?
Check septic feasibility early: only about 20% of Culberson County's soils are free of severe limitations for a conventional drain field13, and the county averages just 11.4 inches of rain a year with roughly a third of years in severe drought1516, both relevant to any well you'll need to permit through the Groundwater Conservation District4. Culberson County is very sparsely populated, at about 0.6 people per square mile17, and sits roughly 119 miles from the nearest metro area18, so factor in distance for supplies, contractors and emergency services. Typical property tax runs about 0.9% of value, with a median annual bill near $7261920. If you plan to split a tract into two or more parts to lay out lots or streets outside city limits, a plat approved by the commissioners court and recorded with the county clerk is required, with exceptions for land used primarily for agriculture and some other divisions2122. Culberson County participates in the National Flood Insurance Program and enforces a flood damage prevention ordinance in flood-hazard areas, so check the flood map before siting a house23.
Watch-outs
- Culberson County's own pages do not confirm whether the county has adopted the Chapter 233 resolution that would trigger residential building-code or inspection requirements; if unsure, ask the County Judge's office directly before you build109.
- No official Culberson County page confirms an owner-builder exemption; call the County Judge's office to check before you buy or build10. Subdivision platting and flood-hazard rules do apply, so check them before splitting or siting on a parcel2123.
Sources
- Culberson County (official) (2026 county census)
- Culberson County (official) (2026 county census)
- Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
- Culberson County Groundwater Conservation District (ccgwcd.org)
- Application for Well Drilling Permit, quoted and re-checked
- TCEQ Region 6 (El Paso) Regional Office, OSSF program (records.tceq.texas.gov)
- Texas law on county zoning and building authority
- General Access Driveway Policy, quoted and re-checked
- Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
- Culberson County Judge & Commissioners Court (co.culberson.tx.us)
- Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
- Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Advice for an Owner of an On-Site Sewage Facility (Septic System), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Population density: Bolthole Index county data
- Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Texas Local Government Code, Chapter 232, County Regulation of Subdivisions, quoted and re-checked
- Texas Local Government Code § 232.0015, Exceptions to Plat Requirement, quoted and re-checked
- Culberson County, Texas Multi-Hazard Mitigation Action Plan 2022 Final, quoted and re-checked
Written October 10, 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.