Bolthole Index

Reagan County, Texas

Building permits, zoning and septic rules in Reagan County, Texas

37Index Score / 100
#233 of 254 in Texas

Unincorporated Reagan County, Texas has no general building-permit requirement and no county zoning ordinance, because Texas gives most counties no zoning power and Reagan County does not meet the narrow population thresholds for a county building or fire code.12 Septic (OSSF) systems still need a permit and approved plan under Texas's statewide rule, though no local Reagan County permitting agent has been confirmed.34 Building or improving a driveway takes its own permit: from the Reagan County Clerk's office for a county road, or from TxDOT for a state highway.5

At a glance

Building permit
Not required in unincorporated Reagan County; no county building or fire code applies here16
Zoning
None countywide; no county zoning ordinance7
Septic (OSSF) permit
Required statewide; no confirmed local Reagan County permitting agent43
RVs, tiny homes, manufactured homes
Unrestricted by county zoning in unincorporated Reagan County2
Driveway onto a county road
Permit required from the Reagan County Clerk's office5
Driveway onto a state highway
TxDOT Form 1058 permit required before construction8
Minimum lot size, setbacks, building height
None set by the county outside city limits2

Who to call

Also useful

Reagan County Clerk

General county administration and records, and driveway/access permit applications for Reagan County (also reachable by mail at P.O. Box 100, Big Lake, TX 76932)

(325) 884-2442

300 North Plaza Avenue, Big Lake, TX 76932

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 Reagan County, Texas?

Unincorporated Reagan County has no general building-permit requirement: Texas gives most counties no authority to require one, and only a county over 250,000 people (or adjacent to one) may adopt a fire-code permit, or a county within 50 miles of an international border may opt into residential building-code standards.6 Reagan County has about 3,141 residents, and its official website lists no building, inspection or permitting department for unincorporated land.91 As with several of the county's other rules, this is a reading of the county's public pages rather than a written statement that no permit is required, so confirm with the County Clerk's office before you build.10

Who handles county permits and administration in Reagan County, and how do you reach them?

The Reagan County Clerk's office is the general contact for county administration, and it is also where a driveway/access permit application is filed.1011 Reach the office at (325) 884-2442, at 300 North Plaza Avenue, or by mail at P.O. Box 100, Big Lake, TX 76932.10 No local OSSF (septic) authorized agent was confirmed for Reagan County; where no local jurisdiction has been authorized, the Texas Commission on Environmental Quality's regional office is the default permitting authority, though this has not been separately confirmed for Reagan County.412 Land inside the City of Big Lake has its own Code Enforcement office, which issues building, electrical and mobile-home permits valid for six months under the 2009-edition International Codes.13

Does Reagan County have zoning?

Unincorporated Reagan County has no county zoning ordinance: Texas law gives counties zoning power only in a handful of specific situations, such as parts of Padre Island and a few named lakes and military zones, and Reagan County is not one of them.7 Because the county has no zoning authority over unincorporated land, it sets no minimum lot size, no setbacks, no lot-coverage limit, no building-height limit and no zoning districts, and RVs, tiny homes and manufactured homes are unrestricted by county zoning outside city limits.2 That is a real answer, not a research gap: it follows directly from Texas law giving a county like Reagan no general zoning power.2 Inside the City of Big Lake, construction is handled differently: the city's Code Enforcement office works under the 2009-edition International Fire, Building and Residential Codes and NFPA 2008, and building, electrical and mobile-home permits there last six months.13

How do septic (OSSF) permits work in Reagan County?

Every on-site sewage facility in Texas needs a permit and an approved plan before construction, alteration, repair or extension, with one narrow exception.3 The exception is a "10-acre rule": a single-family home on at least 10 acres, evaluated by a licensed site evaluator or professional engineer, with every part of the OSSF at least 100 feet from the property line, no other dwelling on the tract, and no nuisance or groundwater pollution.314 No local authorized agent for OSSF permitting has been confirmed for Reagan County; the TCEQ regional office is the default permitting authority where no local jurisdiction has been authorized, but ask the County Clerk's office who currently handles it before you apply.41210 An emergency repair does not need a permit first, but it must be reported in writing to the permitting authority within 72 hours after work begins.14 With 46.1% of Reagan County's soils free of severe limits for a conventional septic drain field, a standard system is workable on much of the land here, better odds than in many rural Texas counties.15

Can you live in an RV or tiny home on your land in Reagan County?

Yes, with conditions: unincorporated Reagan County has no zoning ordinance, so it sets no rule restricting RV, tiny-home or manufactured-home occupancy on private land, a direct result of Texas law giving the county no general zoning power.2 The same lack of zoning means there is no minimum dwelling size and no accessory-dwelling rule in unincorporated Reagan County.2 Any wastewater system connected to the RV, tiny home or manufactured home still needs an OSSF permit under Texas's statewide septic rule.3 Inside the City of Big Lake, construction and mobile-home placement go through Code Enforcement instead, with permits valid for six months.13

Building on land in Reagan County: the steps, in order

  1. Confirm the parcel is outside the City of Big Lake's limits, since the city enforces its own building codes under a six-month permit while the unincorporated county does not.137
  2. Call the Reagan County Clerk's office at (325) 884-2442 for general county questions and for the county's driveway/access permit application.1011
  3. Building a driveway onto a Reagan County road? A residential driveway's dimensions are set by the precinct commissioner, and a non-residential driveway on a paved road must be at least 50 feet wide and 28 feet long with 6 inches of compacted base.5
  4. Building a driveway onto a state highway instead? File TxDOT Form 1058 and give TxDOT 24 hours' notice before construction, after the permit is fully executed.8
  5. Before you dig a septic system, ask the County Clerk's office who currently handles OSSF permitting for your Reagan County parcel, since no local authorized agent has been confirmed.410
  6. Get your OSSF plan approved and the permit issued before construction; unless you qualify for the state's narrow 10-acre exemption, a permit is required regardless of lot size.3
  7. No county building permit or inspection has been confirmed as required in unincorporated Reagan County, but confirm with the County Clerk's office before you start, since the county's pages don't say so in writing.110

What to check before you buy land in Reagan County, Texas

Reagan County's septic odds are better than many nearby counties: 46.1% of its soils have no severe limits for a conventional drain field, though the remaining share will need an engineered or alternative system.15 The county is flat and dry -- 97.3% of land sits at 15% slope or less, with almost no tree cover at 0.1% wooded -- and it sees severe drought in about 20.5% of years, worth planning for with any well.161718 Reagan County is rural and sparsely populated, with 3,141 residents at about 2.7 people per square mile, roughly 61 miles from the nearest metro area.91920 Any new driveway needs a permit before you build it -- from the County Clerk's office for a county road, or from TxDOT (Form 1058) for a state highway.521 Property taxes run an effective 1.1% rate, with a median annual bill of $1,825.2223

Watch-outs

  • No local OSSF (septic) permitting authority has been confirmed for Reagan County; ask the County Clerk's office who currently handles applications before you plan a system.410
  • Reagan County's own driveway/access rules are specific and differ by road type -- dimensions, base material and who signs off change for a county road versus a state highway, so match the right permit to the right road.521
  • The City of Big Lake enforces its own adopted building codes and six-month permits; those rules stop at the city limits and do not reach unincorporated Reagan County land.13

Sources

  1. Reagan County, TX - Official Website (2026 county census)
  2. Texas law on county zoning and building authority
  3. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  4. TCEQ - Getting a Permit for an OSSF (2026 county census)
  5. Reagan County Driveway/Access Permit Application and Guidelines, quoted and re-checked
  6. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  7. Reagan County, TX - Official Website (2026 county census)
  8. Access Management Manual: Section 4, Driveway Permits, Design, and Materials, quoted and re-checked
  9. County population: Bolthole Index county data
  10. Reagan County Clerk (co.reagan.tx.us)
  11. Reagan County Driveway/Access Permit Application and Guidelines, quoted and re-checked
  12. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  13. City of Big Lake Code Enforcement, quoted and re-checked
  14. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  15. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  16. Share of land at 15% slope or less: Bolthole Index county data
  17. Wooded share of land: Bolthole Index county data
  18. Share of years in severe drought: Bolthole Index county data
  19. Population density: Bolthole Index county data
  20. Distance to the nearest metro area: Bolthole Index county data
  21. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  22. Effective property tax rate: Bolthole Index county data
  23. Median property tax bill: 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.

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County locator

Reagan County in Texas

37
County map
Reagan County highlighted among the Texas counties · colored by Index score

How Reagan County scores

Seclusion79100% ev.
Self-Sufficiency1196% ev.
Admin Boringness8290% ev.
Durability32100% ev.
Property Autonomy71100% ev.
Carry Cost8096% ev.

Evidence strength: 97%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$169kTypical home
1.1%Property tax
$1,249Land / acre
17.7"Annual rain
20.5% of yrsSevere drought
45.4 / yr (+33.5)Mid-century 100°F days
35.7 daysMid-century dry spell
1.52" (+6.4%)Mid-century 1-day rain
1.25×Wildfire change factor
100%Forward climate coverage
$2,511Home insurance / yr
2.3% / yrInsurance growth
0%Nonrenewal rate
single ZIP shrunk to state medianInsurance basis
400Radius comparison (15 mi)
2.7People / sq mi
0%Federal land
97.3%Land at 15% slope or less
46.1%Septic soil without severe limits
343,351 acWorkable land screen
0.1%Wooded land
1.8 tonsBiomass / forest ac
64.8°FAvg temp

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Answers from the rulebook for Reagan County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Reagan County rules

  • Zoning districts · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Minimum dwelling size · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Minimum lot size · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Setbacks · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Lot coverage · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Building height · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Living in an RV · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Camping on your land · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Tiny homes · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Manufactured homes · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Accessory dwellings · by state lawNo county rule

    Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • Driveway accessRequired

    New or modified driveway/access connections requiring access from a Reagan County road.

    • A completed Reagan County Driveway/Access Permit Application is required for the county process.
    • Residential driveway dimensions are controlled by the precinct commissioner.
    • Non-residential paved-road access must use matching roadway material, 6 inches of compacted base and hot mix asphalt, and must be at least 50 feet wide and 28 feet long when the road is not laned, or extend to the existing easement length when the county road is laned.
    • Caliche-road access must use like construction and the same dimensions as paved-road access.
    • Approval may be issued by the individual precinct commissioner; a denial may be appealed to the full Commissioners’ Court.

    compacted base thickness: 6 inches (Non-residential driveway adjoining a paved road.) · minimum width: >= 50 feet (Non-residential driveway adjoining a paved road when the road is not laned.) · minimum length: >= 28 feet (Non-residential driveway adjoining a paved road when the road is not laned.)

    “Please complete this form and return the ORIGINAL to: Reagan County Clerk”
  • Permit processPublished (with conditions)

    County driveway/access permits for residential and non-residential access in Reagan County.

    • The application is submitted to the Reagan County Clerk at PO Box 100, Big Lake, Texas 76932.
    • The application must identify the proposed driveway/access location and map, legal description, subdivision status, nature of construction, precinct number, applicant information, and signature.
    • For residential driveways, dimension requirements must be obtained from the commissioner of the precinct.
    • For non-residential driveways adjoining a paved road, the access/driveway must use matching roadway material, with 6 inches of compacted base and hot mix asphalt, not less than 50 feet in width and 28 feet in length if the road is not laned, or the existing easement length if the county road is laned.
    • Access/driveways on caliche roads must use like construction and the same dimensions as paved roads.
    • An individual commissioner may approve or deny the proposed driveway/access; a denial may be appealed to the full Commissioners’ Court by requesting the item be placed on the agenda at a regular meeting.

    compacted base thickness: 6 inches (For non-residential driveways adjoining paved roads.) · minimum width: >= 50 feet (For non-residential driveways adjoining paved roads when the road is not laned.) · minimum length: >= 28 feet (For non-residential driveways adjoining paved roads when the road is not laned.)

    “Please complete this form and return the ORIGINAL to: Reagan County Clerk”
  • Building permitNot required

    Reagan County's official site lists only elected offices with no building, inspection, or permit department; Texas counties cannot require building permits in unincorporated areas.

    Reagan County, TX - Official Website ↗Scouted from the county site, not yet independently re-checked

  • County-wide zoningAbsent

    No county planning or zoning office exists; Texas counties lack general zoning authority over unincorporated land.

    Reagan County, TX - Official Website ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

  • Building code adoptedPartial

    Industrialized housing and buildings, modules, and modular components governed by the Texas Industrialized Housing and Buildings program.

    • The mandatory state code adoption applies to industrialized housing and buildings, modules, and modular components, not all construction statewide.
    • The effective date is July 1, 2024.
    • The International Existing Building Code applies to alterations of portable industrialized buildings.
    • Manufacturers already certified for Texas must have design-package documents reviewed and approved to the new editions with an approval date on or after July 1, 2024, unless the manufacturer elected to transition before the effective date under Department rule 70.70(a)(5)(B).
    • Construction begun on or after July 1, 2024 must comply with the new code editions and approved design packages.
    • Construction begun before July 1, 2024, or before a manufacturer's effective transition date, must meet the stated completion, inspection, and labeling deadline to remain eligible for a Texas decal.

    effective date: 2024-07-01 · International Building Code: 2021 Edition (including appendices C, F, and K) · International Residential Code: 2021 Edition (including appendices AG, AH, AK, AP, AQ, and AT) · International Fuel Gas Code: 2021 Edition · International Mechanical Code: 2021 Edition · International Plumbing Code: 2021 Edition · International Energy Conservation Code: 2015 Edition · National Electrical Code: 2020 Edition · International Existing Building Code: 2021 Edition (for alterations of portable industrialized buildings)

    “July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
  • Who permits septicMixed

    On-site sewage facilities, including septic systems, throughout Texas

    • In most areas, local governments act as TCEQ-authorized agents and administer the OSSF program.
    • The TCEQ regional office is the permitting authority where a local jurisdiction has not been authorized.
    • Local permitting programs may be more stringent than state minimums.
    “TCEQ is not often the OSSF permitting authority. [...] The TCEQ regional office will be the permitting authority in locations where a local jurisdiction has not been authorized.”
  • Septic permitRequired

    Construction, installation, alteration, extension, repair, and operation of OSSFs in Texas, including Reagan County, subject to the stated exemptions and local-authority requirements.

    • A permit and approved plan are required for construction, alteration, repair, extension, and operation of an OSSF.
    • An OSSF may be exempt if it complies with 30 TAC Chapter 285 and meets the 10-acre rule: licensed site evaluation or professional-engineer evaluation; single-family dwelling on a tract of at least 10 acres; no nuisance or groundwater pollution; all OSSF parts at least 100 feet from the property line; effluent disposed of on the property; and the single-family dwelling is the only dwelling on the tract.
    • Emergency repairs listed by TCEQ do not require a permit but must be reported to the permitting authority in writing within 72 hours after repairs begin.
    • Grandfathered systems may be exempt if installed before the earlier of local authorization or September 1, 1989, are not a nuisance, are not in need of repair, and have not had a significant increase in use or otherwise been altered.
    • Applications must be submitted to the applicable permitting authority; the TCEQ regional office is the permitting authority where a local jurisdiction has not been authorized.
    • Local permitting programs may be more stringent than state minimums.

    minimum tract size for 10-acre exemption: >= 10 acres (single-family dwelling and all other stated conditions must be satisfied) · minimum distance from property line for 10-acre exemption: >= 100 feet (all parts of the OSSF) · emergency-repair reporting deadline: <= 72 hours (after repairs have begun) · permit application review deadline: <= 30 days (permitting authority must approve or deny planning materials and application)

    “A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.”
    One more reviewed finding on this topic
    • Required — Construction, installation, alteration, extension, or repair of an OSSF in Texas
      “A permit is required to construct, install, alter, extend, or repair an OSSF. [...] An OSSF may be exempt from permitting if it complies with all other requirements, including planning, construction, and installation standards of 30 TAC 285 AND meets the “10 acre rule”:”
  • Septic inspectionLimited

    OSSF installation and, where applicable, maintenance inspections in Texas

    • Authorized agents or their designated representatives inspect system installation.
    • Some permitting authorities impose more stringent requirements.
    • Maintenance-provider inspection and reporting requirements apply to systems and circumstances governed by 30 TAC §285.91(4).
    • Electronic monitoring may reduce reporting to every six months where the stated monitoring conditions apply.

    reduced maintenance reporting interval with qualifying electronic monitoring: 6 months (only where the system uses the specified electronic monitoring, automatic notification, and disinfection monitoring)

    “Many times, the AA has a "designated representative" (DR) to assist them with their responsibilities, which include reviewing plans for constructing, altering, extending or repairing each OSSF; issuing permits; and inspecting system installation. [...] If the system uses an electronic monitor, automatic radio or telephone to notify the maintenance provider of system or component failure and to monitor the amount of disinfection in the system, reporting may be reduced to every six months.”
  • Off-grid sanitationAllowed (with conditions)

    On-site sewage facilities used for domestic sewage disposal without a public sewer connection in Texas, including potentially Reagan County.

    • OSSFs are subject to permit and approved-plan requirements unless a stated exemption applies.
    • The applicable local permitting authority may impose requirements more stringent than state minimums.
    • The system must satisfy applicable planning, construction, installation, and operational standards, including 30 TAC Chapter 285.
    “Almost all OSSFs must have a permit prior to any construction, installation, repair, extension, or other alteration.”
  • county zoning authorityLimited

    Texas counties adopting zoning regulations for specified unincorporated or otherwise specially defined areas.

    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    • Other Chapter 231 subchapters address special areas including the Amistad Recreation Area in Val Verde County, military zones, certain lakes, the El Paso Mission Trail Historical Area, Lake Somerville, and Falcon Lake in Zapata County.
    • The cited statute was enacted effective September 1, 1987; the Falcon Lake subchapter was added effective June 15, 2007, and amended effective September 1, 2009.

    Padre Island distance from publicly owned park or recreational development: <= 2 miles (Area must be outside a municipality and in Cameron or Willacy County.) · Padre Island distance from beach, wharf, or bathhouse: <= 2 miles (The beach, wharf, or bathhouse must be used by at least 500 persons annually.)

    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • county building authorityLimited

    Texas counties adopting and enforcing fire-code building permits for specified buildings in unincorporated areas and applying residential building-code standards in certain counties.

    • Under Section 233.061, the county must have a population over 250,000 or be adjacent to a county with a population over 250,000.
    • Under Section 233.062, the fire code applies only to commercial establishments, public buildings, and multifamily residential dwellings consisting of four or more units constructed in an unincorporated area.
    • The fire code does not apply to an industrial facility having a fire brigade that conforms to Occupational Health and Safety Administration requirements.
    • A covered applicant must submit a plan and a commissioners-court-set application fee; the county must issue or deny the permit within 30 days, and failure to act within 30 days approves the construction for purposes of the subchapter.
    • The fire code must conform to the International Fire Code or Uniform Fire Code as those codes existed on May 1, 2005, or establish protective measures exceeding those standards; later editions may be adopted.
    • Residential standards under Section 233.152 apply only if the county adopts a resolution or order and the county is within 50 miles of an international border or has a population over 100.
    • Those residential standards apply only to new single-family-house or duplex construction beginning after September 1, 2009; manufactured or modular structures governed by Occupations Code Chapters 1201 or 1202 are excluded from the definition of new residential construction.
    • A municipality's building code controls in its extraterritorial jurisdiction, and Section 233.152 does not authorize county prior approval of new residential construction or county zoning regulations.
    • Fire-code inspection and permit fees may be charged under a fee schedule based on building type, limited to amounts necessary to administer and enforce the subchapter; inspection fees must be reasonable and reflect approximate inspection costs.

    county population threshold for fire-code authority: > 250000 persons (A county adjacent to a county over 250,000 also qualifies.) · multifamily residential dwelling threshold: >= 4 units (The fire code applies only to covered buildings constructed in an unincorporated area.) · residential-code border distance: <= 50 miles (Alternative qualification is county population over 100.) · application decision period: 30 days (If the commissioners court does not issue or deny the permit within 30 days after receiving the application and fee, construction is approved for purposes of the subchapter.) · residential standards effective construction date: > 2009-09-01 (Applies only to new residential construction that begins after September 1, 2009.)

    “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code. [...] The fire code applies only to the following buildings constructed in an unincorporated area of the county: (1) a commercial establishment; (2) a public building; and (3) a multifamily residential dwelling consisting of four or more units.”

Inside cities and towns in Reagan County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Building code adoptedAdopted (with conditions)

    Building-code enforcement and permitting within the City of Big Lake, Texas.

    • Code Enforcement states that building, electrical, and mobile-home permits last six months.
    • Fire-safety matters are inspected by the State Fire Marshal.
    • The page states that the city works under the 2009 Edition International Codes IFC, IBC, IRC, and NFPA 2008.

    permit duration: 6 months (building, electrical, and mobile home permits)

    “Code Enforcement works under the Life and Safety Code; 2009 Edition International Codes IFC, IBC, IRC; and NFPA 2008.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Owner-builder exemption — Owner-builders seeking an exemption from building permit or inspection requirements in Reagan County.
  • Inspections — Building inspections in Reagan County.
  • Certificate of occupancy — Certificates of occupancy for buildings in Reagan County.
  • Well permit — Private water-well permitting requirements in Reagan County.
  • Mandatory utility hookup — Connection to public water or sewer utilities for property in Reagan County.
5 more unanswered
  • Agricultural exemption
  • Subdividing land
  • Building in a floodplain
  • Short-term rentals
  • Permit fees

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Water rights & wells in Reagan County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Texas’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellExempt up to a limit

Texas groundwater is governed by the rule of capture; a Groundwater Conservation District must exempt qualifying domestic/livestock wells and may not restrict their production, but well registration and spacing rules can still apply and the exemption does not cover wells serving a platted subdivision.

Limit: Domestic/livestock well exempt from GCD production permitting if on a tract >10 acres AND incapable of producing >25,000 gal/day (Tex. Water Code §36.117)

Texas Water Code §36.117 / TWDB ↗
  • Reagan, Upton & Midland Counties Priority Groundwater Management Areapartial of county

    TCEQ-designated critical-groundwater area; drives GCD coverage. Domestic/livestock wells remain exempt but spacing/registration may apply.

    TCEQ — Priority Groundwater Management Areas ↗

Hybrid state (appropriation + riparian). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Texas state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Reagan County, Texas

Is Reagan County a good place to live off-grid or homestead?

Reagan County scores 37/100 on the Bolthole Index, a marginal county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: thin water margin (17.7″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Reagan County, Texas?

Reagan County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Texas Commission on Environmental Quality (TCEQ) Region 7 (Midland) - OSSF permitting authority. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Reagan County?

Living in an RV on your own land in Reagan County is allowed: Unincorporated Reagan County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Reagan County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.reagan.tx.us. Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits. Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Reagan County, Texas?

Land in Reagan County runs about $1,249 per acre, based on the latest county data.

What is the water situation in Reagan County?

Reagan County gets about 17.7" of rain a year, with severe drought in roughly 20.5% of years. On water rights, Reagan County lies in the Reagan, Upton & Midland Counties Priority Groundwater Management Area — TCEQ-designated critical-groundwater area; drives GCD coverage. Domestic/livestock wells remain exempt but spacing/registration may apply..

How remote is Reagan County?

A typical private-land location has about 400 people within 15 miles and 527,825 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

Going off-grid in Reagan County means bringing your own water and power. The kit we’d start with:

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How Reagan compares in Texas

Compare side-by-side →See all 254 Texas counties ranked →