Bolthole Index

Wilson County, Texas

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

51Index Score / 100
#132 of 254 in Texas

Unincorporated Wilson County, Texas requires county development permits, and covered construction also faces the county’s adopted fire code12. Unincorporated Wilson County has no county zoning; property in city limits or a municipal ETJ may face city zoning or development rules34. Wilson County Health & Public Safety administers county septic permits5.

At a glance

Development permit / building code
County development permits are required; covered construction also follows the adopted 2021 International Fire Code12
Zoning
No county zoning in unincorporated Wilson County; city zoning or development rules may apply within city limits or an ETJ34
Septic
Wilson County Health & Public Safety issues OSSF permits as the state's TCEQ-authorized agent65
RV / tiny home / manufactured home
No county zoning restrictions in unincorporated Wilson County; development, fire-code and septic requirements still need separate review3125
Agricultural platting exemption
Qualifying agricultural land divisions can use Attachment 24 filed with the County Clerk; no land may be laid out for public dedication7
Driveway access
A county driveway permit is required for lots in subdivisions the county regulates; a TxDOT permit (Form 1058) applies instead for access onto a state highway8910
Floodplain building
A Floodplain Development Permit is required for covered flood-hazard development; complete permit actions within one year unless an extension is obtained11

Who to call

Building permits

Wilson County Permitting & Development

Issues Wilson County development permits (construction/reconstruction of buildings, placement of structures), driveway permits, and floodplain development permits for unincorporated Wilson County

830-393-8357

Courthouse Annex II, 800 Tenth Street, Bldg B, Floresville, TX 78114

Online permits →

Septic permits

Wilson County Health & Public Safety

Reviews and issues on-site sewage facility (OSSF/septic) permits for Wilson County as a TCEQ-authorized agent

830-393-8357

800 10th Street, Building B, Floresville, TX 78114

Also useful

Wilson County Fire Marshal

Issues county fire-code building permits and inspections for commercial buildings, public buildings, and multifamily residential buildings of four or more units in unincorporated Wilson County, plus agricultural burn permits

830-259-5612

Wilson County Emergency Operations Center, 802 10th St., Floresville, TX 78114

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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

Wilson County’s forms page requires development, driveway and septic permits; its subdivision regulations cover subdivisions outside incorporated cities and define development to include construction, reconstruction and placement of structures1. Wilson County also adopted the 2021 International Fire Code, requiring a Development Permit before construction or substantial improvement covered by the order and a System permit for each required system2. The county fire-code order excludes municipalities that have adopted their own fire code2. Ask Wilson County Permitting & Development and the Fire Marshal which development and fire-code requirements cover your house, barn or manufactured home1213. Elmendorf, a city mainly in Bexar County that reaches into Wilson County, issues its own building permits inside city limits14. County OSSF applications go through Wilson County Health & Public Safety; Elmendorf also publishes city septic-installation and recertification fees, so confirm both offices’ requirements for an Elmendorf parcel515.

Who handles building and development permits in Wilson County, and how do you reach them?

Start with Wilson County Permitting & Development at Courthouse Annex II, 800 Tenth Street, Bldg B, Floresville, TX 78114, phone 830-393-8357; the office lists septic and driveway inspections12. Wilson County’s forms page provides development, driveway and septic application materials and links a complete development and permit fee schedule1617. Include the Permit Requirement Page with each development, septic and driveway application16. For fire-code questions, contact the Wilson County Fire Marshal at 802 10th St., Floresville, TX 78114, phone 830-259-561213. The Fire Marshal’s process for covered projects includes a building permit and at least 3 construction site visits or inspections under the adopted 2021 International Fire Code18.

Does Wilson County have zoning?

Unincorporated Wilson County has no county zoning regulations3. Without county zoning, unincorporated Wilson County has no zoning restrictions on RV, tiny-home, manufactured-home or accessory-dwelling occupancy, and no zoning minimum dwelling size, lot size, setback, lot-coverage or height limits19. County development, subdivision, floodplain, septic and driveway requirements can still apply4. Within city limits or a municipal ETJ, contact the applicable city about zoning or development rules; those rules may apply, rather than automatically replacing every county requirement4. Elmendorf, mainly in Bexar County and extending into Wilson County, has its own zoning inside city limits20. County septic applications go through Wilson County Health & Public Safety, while Elmendorf also lists city septic requirements and fees515.

How do septic permits work in Wilson County?

Wilson County Health & Public Safety administers county on-site sewage facility (OSSF) permits at 800 10th Street, Building B, Floresville, TX 78114, phone 830-393-8357521. Only 4.2% of Wilson County soils are rated “not limited” for conventional septic drain fields; get a parcel-specific evaluation and allow for an engineered system rather than assuming septic is impossible22. The county application lists $250 for a conventional tank, $350 for a conventional tank in a subdivision and $400 for an aerobic system; aerobic systems require an affidavit and maintenance contract21. Texas’s 10-acre exemption requires compliance with state planning, construction and installation standards, a licensed site evaluator or professional engineer, a single-family home as the only dwelling, no nuisance or groundwater pollution, all OSSF parts at least 100 feet from property lines and on-site effluent disposal; confirm local requirements with the county before relying on the exemption23. A county final inspection must occur within one year of authorization or a new application and fee are required24.

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

For an RV or tiny home in unincorporated Wilson County, review development and wastewater requirements before placing the dwelling: county subdivision rules define development to include placement of a structure1. In county-regulated subdivisions, homes may not be built or brought onto a lot until driveway and floodplain development permits are obtained and a septic application is submitted8. The county fire-code order expressly includes recreational vehicle parks among projects requiring a Development Permit before covered construction or substantial improvement; ask the Fire Marshal how the order applies to your proposed use213. Off-grid sanitation still generally requires an approved OSSF plan and septic permit unless an exemption applies25.

Building a home in Wilson County: the steps, in order

  1. Call Wilson County Permitting & Development at 830-393-8357 about the development application and the Fire Marshal about fire-code coverage before construction1212.
  2. Obtain a soil/site evaluation and apply for county OSSF approval through Wilson County Health & Public Safety5.
  3. For a county-regulated subdivision lot, obtain the Temporary/Permanent Driveway Permit before accessing a publicly dedicated road; for state-highway access, contact TxDOT about Form 1058810.
  4. Resolve floodplain approval before covered development; an exemption certificate may be available outside the Special Flood Hazard Area, while county-regulated subdivisions and other covered projects also fall under the order11.
  5. Use the county forms page for the fee schedule and include the Permit Requirement Page with development, septic and driveway applications1716.
  6. If dividing land for qualifying agricultural operations without public dedication, file Attachment 24 with the County Clerk; subdivision requirements return if the qualifying use ends7.

What to check before you buy land in Wilson County

Confirm city-limit and ETJ boundaries before relying on unincorporated Wilson County’s no-zoning rule; municipal zoning or development requirements may apply4. For a water well in the Evergreen Underground Water Conservation District, a production permit is required before drilling or operating a well capable of more than 25,000 gallons per day, more than 17.5 gallons per minute, or used for public supply; exempt wells below both thresholds still require registration26. Wilson County averages 31.4 inches of annual rain, and severe drought occurred in 20.8% of years on record, making well yield a useful purchase question2728. Check floodplain coverage with Permitting & Development because the county floodplain order also reaches regulated subdivisions, manufactured-home parks and large-scale development projects, subject to municipal exclusions1112. A typical Wilson County home value is about $407,837, with a median annual property tax bill near $3,726 and typical annual homeowners insurance around $1,925293031.

Watch-outs

  • No county zoning in unincorporated Wilson County does not remove development, floodplain, septic, driveway or subdivision requirements3.
  • Wilson County’s adopted fire-code order adds development and system-permit requirements for covered work; ask the Fire Marshal about your project before construction213.
  • We could not confirm a Wilson County owner-builder exemption from development permits, a countywide certificate-of-occupancy rule or a short-term-rental rule; ask Permitting & Development before relying on an exemption or starting a rental12.

Sources

  1. Wilson County Forms and Permits, quoted and re-checked
  2. co.wilson.tx.us, quoted and re-checked
  3. Building and Zoning Letter, quoted and re-checked
  4. Building and Zoning Letter, quoted and re-checked
  5. Septic Permit Application Checklist, quoted and re-checked
  6. Septic Permit Application Checklist (2026 county census)
  7. Wilson County Subdivision Regulations Adopted 4-13-26, quoted and re-checked
  8. Order Adopting Rules of Wilson County, Texas, quoted and re-checked
  9. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  10. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  11. co.wilson.tx.us, quoted and re-checked
  12. Wilson County Permitting & Development (co.wilson.tx.us)
  13. Wilson County Fire Marshal (co.wilson.tx.us)
  14. Elmendorf: City of Elmendorf Building Permit Application (Wilson County), quoted and re-checked
  15. Elmendorf: City of Elmendorf Permits and Code Compliance (Wilson County), quoted and re-checked
  16. Wilson County Forms/Permits/911 Addressing, quoted and re-checked
  17. Wilson County Forms/Permits/911 Addressing, quoted and re-checked
  18. Wilson County Fire Marshal Office Fee Schedule, quoted and re-checked
  19. Texas law on county zoning and building authority
  20. Elmendorf: Code of Ordinances, Sec. 38-86. Use table (Wilson County), quoted and re-checked
  21. Wilson County Health & Public Safety (co.wilson.tx.us)
  22. 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
  23. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  24. co.wilson.tx.us, quoted and re-checked
  25. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  26. Evergreen Underground Water Conservation District, quoted and re-checked
  27. Annual precipitation: Bolthole Index county data
  28. Share of years in severe drought: Bolthole Index county data
  29. Typical home value (Zillow): Bolthole Index county data
  30. Median property tax bill: Bolthole Index county data
  31. Typical home insurance premium: Bolthole Index county data

Written October 11, 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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Compared with neighboring counties

Unlike all 6 of its neighbors, Wilson County requires a building permit only in limited cases.

RuleWilson CountyKarnes CountyBexar CountyAtascosa CountyGuadalupe CountyGonzales CountyDeWitt County
Building permitLimitedNot requiredNot requiredNot requiredNot requiredNot requiredNot required
County zoningNoNoNoNoNoNoNo
Septic permitsCounty Health & Public Safety OfficeKarnes CountyCounty Env. ServicesCounty Health Dept.County Env. Health Dept.County Permit OfficeDeWitt County

County locator

Wilson County in Texas

51
County map
Wilson County highlighted among the Texas counties · colored by Index score

How Wilson County scores

Seclusion28100% ev.
Self-Sufficiency3996% ev.
Admin Boringness7490% ev.
Durability44100% ev.
Property Autonomy71100% ev.
Carry Cost69100% 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 →

$408kTypical home
1.3%Property tax
$4,471Land / acre
31.4"Annual rain
20.8% of yrsSevere drought
48.5 / yr (+32.2)Mid-century 100°F days
27.6 daysMid-century dry spell
2.18" (+4.3%)Mid-century 1-day rain
1.4×Wildfire change factor
100%Forward climate coverage
$1,925Home insurance / yr
0.9% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
24,783People within 30 min
5,162,188People within 2 hr
36,863Radius comparison (15 mi)
67.4People / sq mi
0%Federal land
100%Land at 15% slope or less
4.2%Soils rated "not limited" for septic (strict USDA rating)
20,826 acWorkable land screen
12.8%Wooded land
15.1 tonsBiomass / forest ac
70°FAvg temp

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Cities and towns in Wilson County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Town of Poth · Stockdale

Answers from the rulebook for Wilson County

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

Wilson County rules

  • Building permitLimited

    County development permitting for construction or reconstruction of a building, or placement of a structure, in Wilson County; the cited county development rules specifically regulate subdivisions outside incorporated cities.

    • The county forms page states that the listed development permits are required.
    • The 2026 subdivision regulations define development to include construction or reconstruction of a building and placement of a structure on land.
    • The subdivision regulations apply to subdivisions situated outside incorporated cities; incorporated municipalities may impose separate requirements.
    • This claim does not establish a general residential structural building-code permit for every project; it establishes the county development-permit requirement evidenced by the official county materials.
    “Wilson County REQUIRES PERMITS FOR ANY DEVELOPMENT/DRIVEWAYS/SEPTIC”
  • Building code adoptedPartial

    The Wilson County Fire Code applies within Wilson County, except within the corporate limits of a municipality located in the county that has adopted its own fire code; it regulates fire, medical, explosion, and related occupancy hazards and construction-related fire-protection requirements.

    • The adopted code is the 2021 International Fire Code, including appendices B through N and the Index.
    • No person may perform or authorize construction or Substantial Improvement of any Building, Use, or Occupancy, Recreational Vehicle Park, lodging or multi-family building in Wilson County without first obtaining a Development Permit.
    • Any Substantial Improvement to or construction of a Building, Use, or Occupancy in Wilson County must be made in accordance with the 2021 Fire Code and the order.
    • Improvements made to comply with Chapter 11 of the 2021 International Fire Code require a Development Permit first.
    • An applicant must obtain a System permit for each required System.
    • Permit, approval, and inspection fees are established from time to time by the Wilson County Commissioners' Court; the County may also require payment of additional third-party review costs.
    • Violations may constitute a Class C misdemeanor with a penalty not to exceed $500.00, and the County may seek a civil penalty of $500.00 per day for continuing violations.
    • The Wilson County Fire Marshal page identifies the Fire Code as adopted October 27, 2025.

    adopted code edition: 2021 International Fire Code (Including appendices B through N and Index) · Development Permit before covered construction: true (Applies to construction or Substantial Improvement of a Building, Use, or Occupancy, Recreational Vehicle Park, lodging, or multi-family building in Wilson County) · System permit: per each required System · maximum criminal penalty: <= 500 USD (Class C misdemeanor) · civil penalty for continuing violation: 500 USD per day

    “The following are hereby adopted as the Fire Code of Wilson County in the State of Texas, except within the corporate limits of any municipality located in the territory of the County that has adopted a fire code”
  • InspectionsRequired

    Commercial building permits and projects regulated by the Wilson County adopted fire code.

    • The fee schedule is issued by the Wilson County Fire Marshal Office.
    • The cited inspection requirement is for projects regulated by the adopted 2021 International Fire Code and is not a general statement that every residential building receives county structural inspections.
    • Fees are paid prior to vertical construction.
    • The schedule was adopted December 22, 2025 and revised November 30, 2025.

    minimum construction site visits and/or inspections: >= 3 visits (for approved processed building plans regulated under the cited fire-code process)

    “The process includes issuing the building permit and a minimum of three construction site visits and/or inspections to ensure compliance to the adopted 2021 IFC.”
  • County-wide zoningAbsent (with conditions)

    County zoning regulations in the unincorporated areas of Wilson County.

    • Wilson County requires floodplain, septic, and driveway permits for construction in unincorporated areas.
    • Construction within city limits or a municipality's ETJ may be subject to the applicable city's zoning or development regulations.
    • Property accessed from a State-maintained highway may also be subject to TxDOT driveway regulations.
    • This claim does not address subdivision platting requirements or other non-zoning regulations.
    “There are no zoning regulations for the unincorporated areas of Wilson County.”
    One more reviewed finding on this topic
    • Absent — Zoning regulations in the unincorporated areas of Wilson County.
      “There are no zoning regulations for the unincorporated areas of Wilson County.”
  • Local zoningVaries (with conditions)

    Aggregate of land-use regulation across Wilson County, including unincorporated areas, incorporated municipalities, and municipal ETJs; this does not claim that Wilson County administers municipal ordinances.

    • Unincorporated Wilson County has no county zoning regulations.
    • Property within city limits or a municipal ETJ may be subject to the applicable city's zoning or development regulations.
    • The county letter does not identify which municipalities or ETJs currently have zoning regulations.
    • County development, floodplain, septic, driveway, and subdivision requirements may also apply.
    “There are no zoning regulations for the unincorporated areas of Wilson County. If you are doing constructions within city limits or an ETJ, I recommend that you contact the applicable city for their zoning/development regulations within their city limits and/or ETJ.”
    One more reviewed finding on this topic
    • Varies (with conditions) — Local zoning and development regulation across Wilson County, including unincorporated areas, incorporated city limits, and municipal ETJs; this is an aggregate countywide conclusion and does not attribute municipal ordinances to the county.
      “There are no zoning regulations for the unincorporated areas of Wilson County. If you are doing constructions within city limits or an ETJ, I recommend that you contact the applicable city for their zoning/development regulations within their city limits and/or ETJ.”
  • Zoning districts · by state lawNo county rule

    Unincorporated Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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 Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning.

    • 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.”
  • Who permits septicCounty

    On-site sewage facilities in Wilson County, Texas.

    • Wilson County Health & Public Safety administers the application and site-investigation process shown in the county OSSF form.
    • TCEQ's general authorized-agent framework includes permit review and inspections.
    “Authorization is hereby given to Wilson County Health & Public Safety to enter upon the above described property for the purpose of soil/site evaluation and investigation of an on-site sewage facility.”
  • Septic inspectionRequired

    Permitted OSSF construction in Wilson County, including final inspection before completion of the authorization period.

    • Wilson County identifies septic inspections as a county service.
    • If a final inspection has not been performed within one year of authorization, a new application and fee are required.
    • TCEQ describes authorized-agent inspection responsibility for OSSFs.

    final inspection deadline: 1 year from authorization issue (Failure to complete the final inspection requires a new application and fee.)

    “The authorization to construct is valid for twelve months from the date of issue. If a final inspection has not been performed within one year of issue, a new application and fee will be required.”
  • Well permitLimited

    Water wells in Wilson County that are within the Evergreen Underground Water Conservation District.

    • Evergreen Underground Water Conservation District covers Wilson County.
    • A production permit is required before drilling or operating a well capable of producing more than 25,000 gallons per day, more than 17.5 gallons per minute, or used for public supply.
    • Exempt wells below both thresholds do not require a permit but must be registered.
    • Permitted wells must comply with production limits, spacing requirements, and annual water-use reporting.

    production capacity threshold: > 25000 gallons per day (A well below the threshold may be exempt but still requires registration.) · production rate threshold: > 17.5 gallons per minute (A well below the threshold may be exempt but still requires registration.)

    “If your well is capable of producing more than 25,000 gallons per day, more than 17.5 gallons per minute (GPM), or is used for public supply, you must obtain a production permit before drilling or operating the well.”
  • Agricultural exemptionAvailable (with conditions)

    A division of land into agricultural operation tracts in Wilson County that would otherwise be subject to the county's subdivision regulations and platting requirements.

    • Attachment 24 must be filed with the Wilson County Clerk.
    • The owner must not lay out any part of the tract as streets, alleys, squares, parks, or other parts intended to be dedicated to public use.
    • The land must be used primarily for agricultural use as defined by Section 1-d, Article VIII, Texas Constitution, or for farm, ranch, wildlife management, or timber production use within the meaning of Section 1-d-1, Article VIII, Texas Constitution.
    • If the tract ceases to be used primarily for the qualifying agricultural, farm, ranch, wildlife management, or timber production use, the subdivision-regulation requirements apply.
    • The Wilson County Clerk filing is the required process for claiming the exemption.
    “A division of a tract of land into agricultural operation tracts is exempt if Attachment 24 is filed with the County Clerk and:”
  • Driveway accessRequired

    Driveways serving lots within subdivisions regulated by the Wilson County Subdivision and Development Rules and Regulations, where access is proposed onto a publicly dedicated roadway.

    • A Temporary/Permanent Driveway Permit must be issued by Wilson County before access onto a publicly dedicated roadway is permitted.
    • The driveway must be constructed according to specifications stated within the permit.
    • The subdivision rules also state that homes may not be built or brought onto a lot until driveway and floodplain development permits have been obtained and an application for a septic permit is submitted.
    • Municipal rules may apply in incorporated territory.
    “no driveway constructed on any lot within this subdivision shall be permitted access onto a publicly dedicated roadway unless a Temporary/Permanent Driveway Permit has been issued by Wilson County. The driveway shall be constructed according to specifications stated within the permit.”
  • Building in a floodplainRequired

    Development in Wilson County special flood hazard areas and county-regulated subdivisions, manufactured home parks, and large-scale development projects.

    • The order applies to areas of special flood hazard within Wilson County jurisdiction and to subdivisions, manufactured home parks, and large-scale development projects, except municipal territory, including extraterritorial jurisdiction, regulated by a municipal flood plain ordinance.
    • A Floodplain Development Permit is required for conformance with the order.
    • A Development Permit Exemption Certificate may be obtained when proposed development is not in the Special Flood Hazard Area.
    • No structure or land in the Special Flood Hazard Area may be located, altered, or have its use changed without compliance with the order, including obtaining a Flood Plain Development Permit.
    • No subdivision, manufactured home park, or large-scale development project may be begun, altered, or completed without compliance, including obtaining a Flood Plain Development Permit.
    • Permit actions must be completed within one year unless an extension is requested and obtained.
    • The permit or exemption certificate fee is set by Commissioners Court.
    • The county order adopts the FEMA Flood Insurance Study and maps dated November 26, 2010, and revisions thereto.

    permit completion period: 1 year (unless an extension is requested and obtained) · base flood elevation increase limit where no regulatory floodway is designated in Zones A1-30 and AE: <= 1 foot (unless the cumulative effect is demonstrated not to increase the base flood water surface elevation more than one foot)

    “A Floodplain Development Permit shall be required to ensure conformance with the provisions of this order.”
  • Permit feesPublished

    Fees for applications for permits issued by Wilson County, including development, driveway, and septic permits.

    • The county forms page directs applicants to a complete list of development and permit fees.
    • The official fee schedule is titled “Fees for Applications for Permits Issued by Wilson County.”
    “For a complete list of development & permit fees click here.”
  • Permit processPartial

    County development, driveway, and septic permitting processes in Wilson County.

    • Wilson County requires permits for development, driveways, and septic work.
    • The permit requirement page must be included with development, septic, and driveway permits.
    • Applicants are directed to contact the county office at 830-393-8357 with questions.
    • The county forms page provides permit packets, applications, septic forms, development permits, PIPROW/driveway materials, and driveway specifications, but does not state a complete end-to-end processing timeline.
    “The permits on this page are required. For any questions, call our office 830-393-8357. * Permit Requirement Page must be included with Development, Septic, & Driveway permits”

Texas rules that apply here

  • Owner-builder exemptionConditional

    An owner performing electrical, plumbing, or air-conditioning and refrigeration work on the owner's own residence or homestead in Texas.

    • Electrical work is exempt from state electrician licensing when performed on a dwelling the person owns and resides in.
    • Plumbing is exempt from state plumbing licensing when performed by the property owner in the property owner's homestead.
    • Air-conditioning and refrigeration contracting is exempt from the applicable state registration requirements when performed in a building owned solely by the person as the person's home.
    • These exemptions do not establish a blanket exemption for every construction trade or contractor-regulated activity.
    “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed as electricians.”
    One more reviewed finding on this topic
    • Conditional — Electrical work on a dwelling owned and occupied by the property owner in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed”
  • Septic permitRequired

    Construction, installation, alteration, extension, repair, and operation of OSSFs in Texas, subject to stated exemptions and local requirements.

    • A permit and approved plan are required for construction, alteration, repair, extension, and operation of an OSSF.
    • A permit is generally required to construct, install, alter, extend, or repair an OSSF.
    • A local permitting authority must be checked because local programs may be more stringent than state minimums.
    • The 10-acre exemption requires compliance with 30 TAC Chapter 285 planning, construction, and installation standards; a site evaluation by a TCEQ-licensed site evaluator or professional engineer; service to a 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; on-site effluent disposal; and the single-family dwelling must be 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 local program was authorized or before September 1, 1989, whichever is earlier, and if they are not creating a nuisance, are not in need of repair, and have had no significant increase in use or other alteration.
    • The permitting authority must approve or deny planning materials and the permit application within 30 days of receipt.

    minimum tract size for 10-acre exemption: >= 10 acres (single-family dwelling and all other stated conditions must be met) · minimum OSSF setback under 10-acre exemption: >= 100 feet from property line (all parts of the OSSF) · emergency repair reporting deadline: <= 72 hours (after repairs have begun) · permit application decision deadline: <= 30 days (from receipt by permitting authority)

    “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”:”
  • Off-grid sanitationLimited

    Off-grid wastewater sanitation through an OSSF in Texas.

    • An OSSF generally requires a permit and approved plan before construction, installation, alteration, extension, repair, or operation.
    • A qualifying single-family dwelling on a tract of at least 10 acres may use the 10-acre permitting exemption only if every stated site-evaluation, setback, nuisance, groundwater, on-site disposal, and single-dwelling condition is met.
    • Local permitting authorities may impose requirements more stringent than state minimums.
    • Emergency repairs are exempt from permitting only for the listed repair types and must be reported in writing within 72 hours after repairs begin.

    10-acre exemption tract size: >= 10 acres (all TCEQ conditions must be satisfied) · 10-acre exemption OSSF setback: >= 100 feet from property line (all parts of the 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”:”
    One more reviewed finding on this topic
    • Limited — Composting toilets used as on-site sewage facility treatment systems in Texas.
      “Composting toilets will be approved by the executive director provided the system has been tested and certified under NSF International Standard 41 (1999) or under any other standards approved by the executive director.”
  • 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.”
    One more reviewed finding on this topic
    • Limited — County zoning authority over unincorporated land in Texas, where a specific statutory grant applies.
      “As you suggest, a county has very limited and specific zoning authority, and none that may be used to regulate construction or operation of the proposed facility.”
  • 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.”
    One more reviewed finding on this topic
    • Limited — County fire-code adoption and building-permit authority for specified buildings in unincorporated areas of qualifying Texas counties, including multifamily residential dwellings of four or more units.
      “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.”

Still unanswered

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

  • Certificate of occupancy — Countywide certificate-of-occupancy requirements for Wilson County buildings.
  • Short-term rentals — Short-term rental use of residential property in Wilson County.

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.

Living off-grid in Wilson County, Texas

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

Wilson County scores 51/100 on the Bolthole Index, a solid county profile. Its strengths: low administrative friction for a quiet rural property and a stronger property-autonomy legal backdrop. Watch-outs: sparse surroundings — about 24,783 people within a 30-minute drive and workable self-sufficiency basics (31.4″/yr rainfall).

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

Wilson County requires a building permit only in limited cases (such as floodplains or specific zones), and it has no county-wide zoning. Onsite septic is permitted by Wilson County Health & Public Safety Office (TCEQ authorized agent for OSSF). Owner-builders may act as their own contractor to build their home. 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 Wilson County?

Living in an RV on your own land in Wilson County is allowed: Unincorporated Wilson County: no county rule sets this, because Wilson County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Wilson County's own reviewed answer confirms it has no county-wide zoning. 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 Wilson County, Texas?

Land in Wilson County runs about $4,471 per acre, based on the latest county data.

What is the water situation in Wilson County?

Wilson County gets about 31.4" of rain a year, with severe drought in roughly 20.8% of years.

How remote is Wilson County?

A representative private-land location has about 24,783 people within a 30-minute drive and 5,162,188 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Wilson compares in Texas

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