Bolthole Index

Hardin County, Texas

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

68Index Score / 100
#49 of 254 in Texas

Unincorporated Hardin County, Texas has no zoning ordinance, but the Floodplain Administration requires a Development Residential Permit before any work starts, and the permit fee doubles if you begin first123. A separate permit covers placing a manufactured home4. Septic permits come from the Hardin County Environmental Health Department or TCEQ, depending on the system and jurisdiction5.

At a glance

Building / development permit
Development Residential Permit required before work starts; fee $100 for the first 1,000 sq ft plus $25 per additional 100 sq ft, doubled if work starts first643
Zoning
None; the county's permit program covers development, floodplain, manufactured homes and subdivisions, not zoning districts1
Manufactured home placement
Separate permit required before the home is placed, $100 per home4
Septic permits
Required; the county Subdivision Regulations name the Hardin County Environmental Health Department or TCEQ, depending on the system and jurisdiction578
RV / tiny home / manufactured home living
Not restricted by zoning, but a manufactured home still needs its own placement permit94
Culvert permit
All roadside culverts must be installed by the county; $50 permit fee, plus $400 installation charge for each culvert after the first410
Owner-builder exemption
Not stated on the county's site; unconfirmed11
Driveway onto a state highway
Needs a TxDOT permit (Form 1058), not a county permit12

Who to call

Building permits

Hardin County Floodplain Administration

Development Residential Permits, manufactured home placement permits, electrical permits, and culvert permits for unincorporated Hardin County; also administers the county's floodplain ordinance.

(409) 246-5250

permits@hardincountytx.gov

225 Crocker Street, Kountze, TX 77625

Septic permits

Hardin County Environmental Health Department

OSSF (septic) permitting for property in Hardin County subdivisions, alongside TCEQ; the county's website does not list a direct phone or address for this department, so start with the general county courthouse line.

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

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

Unincorporated Hardin County, Texas requires a Development Residential Permit before most construction begins, issued by the county's Floodplain Administration64. The county defines development broadly: any man-made change to real estate, including buildings and other structures, mining, dredging, filling, grading, paving, excavation, drilling, or storage of equipment or materials4. The permit fee is $100 for the first 1,000 square feet plus $25 for each additional 100 square feet, though fees can be waived on some non-residential outbuildings depending on use4. Placing a manufactured home on the property needs its own separate permit, at $100 per home, and it's the buyer or homeowner's responsibility to obtain it, not the dealer or transporter4. No work of any kind may start until the permit is issued, the residential permit expires if work does not begin within 6 months, and the fee doubles if you begin before getting a required permit133. The county's page does not say whether this program also applies inside incorporated cities, so ask the Floodplain Administration if your parcel is near city limits14.

Who is the Hardin County building department, and how do you reach them?

Hardin County's development, floodplain, manufactured home, electrical, and culvert permits are all issued through the Floodplain Administration at 225 Crocker Street, Kountze, TX 77625, phone (409) 246-5250, email permits@hardincountytx.gov4. Before running electrical service from Entergy or SHECO to new construction, you need a separate $30 electrical permit from the same office4. If you'll need a driveway culvert on a county road, the county installs the first one at no charge beyond a $50 permit fee, and charges $450 for each additional culvert on the same property4. The county doesn't install culverts on state highways or private roads, so a state-highway driveway routes through TxDOT instead412. Inside a subdivision, a driveway culvert permit is required and the Road and Bridge Department must approve the culvert size and grade10.

Does Hardin County have zoning?

Hardin County has no zoning ordinance; its permit program covers development, floodplain, manufactured homes, electrical service, and culverts, not zoning districts1. Texas gives counties zoning power only in narrow, specifically named situations15. We could not confirm the zoning rules of each city in Hardin County, so ask the city if your parcel lies inside city limits. Because there's no zoning, the county sets no minimum home size, minimum lot size, setback, lot-coverage limit, or building-height limit by ordinance, and doesn't restrict RVs, tiny homes, manufactured homes, or accessory dwellings through zoning9. That doesn't mean there's no process: the Development Residential Permit and manufactured-home placement permit above still apply to most new structures64.

How do septic permits work in Hardin County?

Hardin County's Subdivision Regulations say an on-site sewage facility (OSSF, commonly called septic) is permitted by the Hardin County Environmental Health Department or by TCEQ, and which one applies depends on the system and jurisdiction58. Texas requires a permit and approved plan to construct, install, alter, extend or repair an OSSF, and where no local jurisdiction is authorized the TCEQ regional office is the permitting authority7. Subdivisions that use OSSFs must have an approved OSSF Subdivision Plan under 30 Texas Administrative Code 285.4(c)16. The county's website does not list a direct phone number or address for the Environmental Health Department, so call the county courthouse switchboard to be routed8. A 10-acre exemption can apply only if every condition is met: a TCEQ-licensed site evaluator or engineer signs off, the tract holds a single-family home on at least 10 acres, all system parts sit at least 100 feet from the property line, and effluent stays on the property7.

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

Because unincorporated Hardin County has no zoning, there's no zoning-based restriction on living in an RV, a tiny home, or a manufactured home on your own land9. That said, if you place a manufactured home on the property, Hardin County's Floodplain Administration requires its own placement permit, at $100 per home, and the buyer or homeowner is responsible for getting it, not the dealer4. Any other structure or development on the land, including a tiny home built or moved in, likely triggers the county's Development Residential Permit and its per-square-foot fee64. Confirm with the Floodplain Administration how they'll treat your specific setup before you buy or move one in4.

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

  1. Contact the Hardin County Floodplain Administration (409-246-5250) before you buy, to confirm the flood zone and what the Development Residential Permit will require4.
  2. Submit the Development Residential Permit application; budget $100 for the first 1,000 square feet plus $25 per additional 100 square feet4.
  3. If you're placing a manufactured home, apply for the separate $100 manufactured home placement permit before the home arrives4.
  4. Apply for the $30 electrical permit before Entergy or SHECO will connect service4.
  5. If you need a roadside culvert for your driveway, apply for the county's culvert permit; the first culvert installs free beyond the $50 permit fee, and in a subdivision Road and Bridge must approve its size and grade410.
  6. Contact the Hardin County Environmental Health Department for an OSSF (septic) permit if the property isn't on sewer8.
  7. Before splitting a tract, check whether a plat is needed: Hardin County requires one when an owner divides a tract outside city limits into 4 or more parts, with limited exceptions such as agricultural use and lots over 10 acres17.
  8. If your driveway will connect to a state highway rather than a county road, apply to TxDOT for a driveway permit on Form 1058 instead of a county culvert permit12.

What to check before you buy land in Hardin County

Confirm the flood zone with the Floodplain Administration before you buy, since permit requests inside a Special Flood Hazard Area must comply with the Hardin County Floodplain Ordinance4. Hardin County's soils are a real constraint for septic: none of the county's soils are rated free of severe limits for a conventional drain field, so budget for an engineered or alternative OSSF system and confirm site evaluation requirements with the Environmental Health Department early188. The county is heavily wooded, at 85.7% forest cover, and gets 60.3 inches of rain a year, both of which affect site clearing and drainage planning1920. If your access road will need a culvert on a county road, budget the $450 charge for anything beyond the first one, or the separate TxDOT process if you're on a state highway412. There's no county zoning to check on a specific parcel, so verify any subdivision plat restrictions directly, since Hardin County's own Subdivision Regulations can set stricter OSSF lot-size rules than the state minimum9.

Watch-outs

  • Two official Hardin County pages give different street numbers for the Floodplain Administration's physical address on Crocker Street; call the office first to confirm the exact address before visiting in person4.
  • The county's website does not publish a direct phone number or address for the Environmental Health Department that issues septic permits; call the county courthouse switchboard to be routed8.
  • Starting work before the Development Residential Permit issues can double the permit fee, and the permit lapses if work does not begin within 6 months313.
  • Whether Hardin County has adopted a building code or requires a certificate of occupancy is unconfirmed; the permit application only states the applicant consents to reasonable inspections to verify compliance21.

Sources

  1. Hardin County - Permits (2026 county census)
  2. Permits | Hardin County, Texas, quoted and re-checked
  3. Permits | Hardin County, Texas, quoted and re-checked
  4. Hardin County Floodplain Administration (hardincountytx.gov)
  5. Hardin County Subdivision Manual, quoted and re-checked
  6. Permits | Hardin County, Texas (2026 county census)
  7. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  8. Hardin County Environmental Health Department (hardincountytx.gov)
  9. Texas law on county zoning and building authority
  10. Hardin County Subdivision Manual, quoted and re-checked
  11. Exemptions to Electrician Licensing (2026 county census)
  12. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  13. Hardin County Development Residential Permit Application, quoted and re-checked
  14. Permits | Hardin County, Texas, quoted and re-checked
  15. Local Government Code Chapter 231, County Zoning Authority (Texas statewide rule), quoted and re-checked
  16. Hardin County Subdivision Manual, quoted and re-checked
  17. Hardin County Subdivision Manual, quoted and re-checked
  18. 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
  19. Wooded share of land: Bolthole Index county data
  20. Annual precipitation: Bolthole Index county data
  21. Hardin County Development Residential Permit Application, quoted and re-checked

Written October 10, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Unlike 5 of its 6 neighbors, Hardin County requires a building permit only in limited cases.

RuleHardin CountyLiberty CountyJefferson CountyOrange CountyTyler CountyJasper CountyChambers County
Building permitLimitedRequiredRequiredRequiredLimitedNot requiredRequired
County zoningNoNoNoNoNoNoNo
Septic permitsCounty SanitarianCounty EngineeringCounty Env. ControlCounty Env. Health & Code Compliance Dept.Tyler CountyANRACounty Env. Health & Permitting

County locator

Hardin County in Texas

68
County map
Hardin County highlighted among the Texas counties · colored by Index score

How Hardin County scores

Seclusion37100% ev.
Self-Sufficiency64100% ev.
Admin Boringness7190% ev.
Durability58100% ev.
Property Autonomy71100% ev.
Carry Cost72100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$236kTypical home
1.2%Property tax
$5,546Land / acre
60.3"Annual rain
11.7% of yrsSevere drought
12.5 / yr (+10.9)Mid-century 100°F days
16.7 daysMid-century dry spell
3.19" (+3.9%)Mid-century 1-day rain
1.4×Wildfire change factor
100%Forward climate coverage
$2,485Home insurance / yr
-0.7% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
52,868People within 30 min
6,976,957People within 2 hr
34,398Radius comparison (15 mi)
65.4People / sq mi
9.9%Federal land
100%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
85.7%Wooded land
36.5 tonsBiomass / forest ac
68°FAvg temp

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Cities and towns in Hardin 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: Kountze · Rose Hill Acres

Answers from the rulebook for Hardin County

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

Hardin County rules

  • Building permitLimited

    Development, including buildings and other man-made changes, administered through Hardin County Floodplain Administration.

    • Before any type of development begins, a permit must be obtained.
    • Permit fees may be waived on non-residential outbuildings and other development depending on intended use of the proposed structure or land.
    • The residential permit application states that no work may start until a permit is issued.
    • The application states that other permits may also be required.

    development residential permit fee for first 1000 square feet: 100 USD · additional development residential permit fee: 25 USD per additional 100 square feet

    “Before any type of development (see definition above) begins a permit must be obtained. Permit fees may be waved on non-residential outbuildings and other types of development depending on intended use of proposed structure and /or land.”
    2 more reviewed findings on this topic
    • Limited — Development, including buildings or other structures, under Hardin County's development-permit program.
      “Before any type of development (see definition above) begins a permit must be obtained. Permit fees may be waved on non-residential outbuildings and other types of development depending on intended use of proposed structure and /or land.”
    • Limited — Issuance of a building permit for development within the jurisdiction of the Hardin County Subdivision Regulations in unincorporated Hardin County.
      “Within the jurisdiction of these Subdivision Regulations, except as provided otherwise, no subdivision shall be made, platted, or recorded, nor shall any building permit be issued, unless such subdivision meets all requirements of these Subdivision Regulations and has been approved in accordance with the requirements as hereinafter provided.”
  • InspectionsLimited

    Inspections associated with the Hardin County development residential permit.

    • The applicant consents to reasonable inspections required to verify compliance.
    • This source does not establish a general building-code inspection program.
    “Applicant hereby gives consent to the Local Administrator or his/her representative to make reasonable inspections required to verify compliance.”
  • Zoning districts · by state lawNo county rule

    Unincorporated Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov.

    • 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 septicMixed (with conditions)

    On-site sewage facilities and sewage systems in unincorporated Hardin County.

    • The county subdivision manual identifies the Hardin County Environmental Health Department or TCEQ as the permitting authority for OSSFs.
    • The applicable authority depends on the system and jurisdiction.
    “SEWAGE SYSTEM: A system for collection, treatment and disposal of sewage, whether said system is a wastewater treatment plant permitted by the TCEQ (Texas Commission on Environmental Quality) or an OSSF (on-site sewage facilities) permitted by the Hardin County Environmental Health Department or the TCEQ.”
  • Septic permitRequired

    Construction, installation, alteration, extension, repair, or operation of an on-site sewage facility, including septic systems and holding tanks, at locations in Hardin County within the TCEQ Region 10 permitting jurisdiction.

    • A permit and approved plan are required before constructing, installing, altering, extending, or repairing an OSSF.
    • Applications and planning materials must be submitted to the 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.
    • An OSSF may be exempt under the 10-acre rule only if it complies with all other 30 TAC Chapter 285 requirements, receives a site evaluation by a TCEQ-licensed Site Evaluator or Professional Engineer, serves a single-family dwelling on a tract of at least 10 acres, causes no nuisance or groundwater pollution, has all parts at least 100 feet from the property line, disposes of effluent on the property, and serves no other dwelling on the tract.
    • Emergency repairs listed on the TCEQ page 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 applicable authorized-program date or before September 1, 1989, whichever is earlier, are not a nuisance, are not in need of repair, and have not been significantly increased in use or otherwise altered.
    • The permitting authority must approve or deny the application within 30 days of receipt and provide written reasons for a denial.
    • For subdivisions utilizing OSSFs in unincorporated Hardin County, the County Subdivision Manual requires an approved OSSF Subdivision Plan under 30 TAC 285.4(c).

    permit review deadline: 30 days (from receipt of the application) · 10-acre exemption tract size: >= 10 acres (all listed 10-acre-rule conditions must also be met) · 10-acre exemption setback: >= 100 feet from property line (all parts of the OSSF must meet this distance) · emergency-repair report deadline: 72 hours (after repairs have begun)

    “Permits are required for on-site sewage facilities (OSSFs) including septic systems and holding tanks. A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.”
    One more reviewed finding on this topic
    • Limited — Unincorporated subdivisions utilizing on-site sewage facilities.
      “An approved OSSF Subdivision Plan in accordance with 30 Texas Administrative Code 285.4(c) for subdivisions utilizing OSSFs; and”
  • Off-grid sanitationAllowed (with conditions)

    Use of an on-site sewage facility instead of a centralized wastewater treatment plant in unincorporated subdivisions.

    • The OSSF must be permitted by the Hardin County Environmental Health Department or TCEQ.
    • Subdivisions utilizing OSSFs must meet 30 TAC 285.4(c) and other applicable laws.
    • An approved OSSF Subdivision Plan is required in final plat materials.
    “OSSF (ON SITE SEWAGE FACILITIES): Subdivisions utilizing OSSFs must meet all requirements found in 30 Texas Administrative Code (TAC) 285.4(c) and all other applicable laws.”
  • Mandatory utility hookupConditional

    Final plat approval for unincorporated subdivisions.

    • The applicant must provide approval from public utilities serving the subdivision or TCEQ acceptance of a special district that will provide public utilities.
    • The requirement is part of final plat submission and does not establish a universal utility-connection mandate for every parcel.
    “Approval from Public Utilities providing service to the subdivision or TCEQ acceptance of the creation of a Special District that will provide those public utilities;”
  • Agricultural exemptionConditional

    Agricultural, farm, ranch, wildlife-management, or timber-production land divisions under Hardin County subdivision platting rules.

    • The owner must not lay out a part of the tract described by Texas Local Government Code §232.001(a)(3).
    • If the primary agricultural, farm, ranch, wildlife-management, or timber-production use ceases, platting requirements apply.
    “The owner does not lay out a part of the tract described by §232.001(a)(3) and the land is to be used primarily for agriculture use, as defined by Section 1-d, Article VIII, Texas Constitution, of for farm, ranch, wildlife management, or timber production use within the meaning of Section 1-d01, Article VIII, Texas Constitution. If the primary use above ceases to be the primary use, the platting requirements will apply to the tract.”
  • Subdividing landRegulated (with conditions)

    Subdivision of land outside municipal limits in Hardin County.

    • A plat is required when an owner divides a tract into four or more parts to lay out a subdivision, lots, streets, alleys, squares, parks, or other parts intended for public or lot-owner use.
    • The manual lists limited exceptions, including primarily agricultural, farm, ranch, wildlife-management, or timber-production use when the owner does not lay out the specified public-use or lot-owner-use parts; the platting requirements apply if that primary use ceases.
    • Other exceptions include certain related-party transfers, lots over 10 acres, veterans' land-board sales, certain state or political-subdivision land, and specified floodplain divisions.

    division threshold: >= 4 parts (subject to statutory and manual exceptions) · large-lot exception threshold: > 10 acres per lot (owner must not lay out specified public-use or lot-owner-use parts)

    “In accordance with §232.001 of the Texas Local Government Code, any owner of a tract of land located outside the limits of a municipality must have a plat of the subdivision prepared if the owner divides the tract into four or more parts to lay out:”
  • Driveway accessRequired

    Driveway access onto public roadways from lots within Hardin County subdivisions.

    • A culvert installation permit must be issued.
    • The Hardin County Road and Bridge Department must approve culvert size and grade.
    • The driveway must satisfy the minimum spacing requirement in the subdivision regulations or the county's then-current spacing requirements.
    • Driveway culverts must have a minimum interior diameter of 18 inches and a minimum length of 20 feet under the drainage requirements.

    minimum driveway spacing on roads without curb and gutter: >= 10 feet measured from culvert to culvert · minimum driveway culvert interior diameter: >= 18 inches · minimum driveway culvert length: >= 20 feet

    “No driveway constructed on any Lot within any subdivision shall be permitted access onto a public roadway unless: • A Permit for a Culvert installation is issued • The County Road & Bridge Department has approved the culvert size and grade; and • The driveway satisfies the minimum spacing requirement in these Subdivision Regulations or the County’s then current spacing requirements for such driveways.”
    One more reviewed finding on this topic
    • Limited — Driveway and road access within unincorporated subdivisions.
      “The County may require an internal road system that minimizes driveways and cross streets to existing County or other public roadways where the existing right of way is less than 60’ wide. The County may also require that lots bordering on an existing arterial road have access to an internal platted road and the final plat shall contain a restriction requiring driveways to connect only to an internal platted road.”
  • Building in a floodplainRequired

    Development and permit requests in Hardin County Special Flood Hazard Areas.

    • A permit must be obtained before development begins.
    • Requests inside a Special Flood Hazard Area must comply with the Hardin County Floodplain Ordinance.
    • Additional forms are required for development located in a Special Flood Hazard Area.
    • The residential permit application allows reasonable inspections to verify compliance.

    residential development permit fee: 100 USD for first 1000 square feet (Plus $25 per additional 100 square feet; certain non-residential outbuilding and other development fees may be waived.)

    “Permit requests inside a Special Flood Hazard Area must comply with the Hardin County Floodplain Ordinance.”
    2 more reviewed findings on this topic
    • Required — Permit requests inside a Special Flood Hazard Area.
      “Permit requests inside a Special Flood Hazard Area must comply with the Hardin County Floodplain Ordinance.”
    • Required — Structures or land within a subdivision plat governed by the Hardin County Subdivision Regulations in unincorporated Hardin County.
      “No structure or land within this plat shall hereafter be located or altered without first obtaining a Development Permit from the Hardin County Floodplain Administrator. The minimum lowest finished floor elevation shall be one foot higher than the highest spot elevation that is located within five feet outside the perimeter of the building, or one foot above the BFE in the floodplain, whichever is higher.”
  • Permit feesPublished (with conditions)

    Hardin County floodplain, development, electrical, manufactured-home, culvert, subdivision, and solar permits.

    • The county permit page states the schedule was effective November 1, 2009 and updated June 21, 2024.
    • The Floodplain Order states its fee schedule becomes effective immediately.
    • If a required permit is not obtained before a project begins, the Floodplain Order states that the fee doubles.
    • Non-residential outbuilding waivers may apply depending on intended use.

    electrical service permit: 30 USD per meter · manufactured home placement permit: 100 USD per home · floodplain development permit: 100 USD first 1000 square feet (plus $0.25 per additional square foot) · subdivision permit: 500 USD minimum (plus $50 per lot) · residential solar permit: 100 USD (must be paid by installation company check)

    “The Commissioners' Court, having authority to establish fees commensurate with the service rendered by the Floodplain Administration, does hereby establish and put into effect the following permit fees: Electrical Service Permit $30.00 per meter Manufactured Home Placement Permit $100.00 per home Floodplain Development Permit $100.00 first 1,000 square feet $0.25 per each additional sq. ft. All new construction and substantial improvements must be permitted. Permit may be waived on non-residential outbuildings depending on intended use of proposed structure. Non-Floodplain Development Permit $100.00 first 1,000 square feet $0.25 per each additional sq. ft. All new construction and substantial improvements must be permitted. Permit may be waived on non-residential outbuildings depending on intended use of proposed structure.”
  • Permit processPublished (with conditions)

    Hardin County development and subdivision permit processes.

    • Residential development applications require site, applicant, owner, builder, square-footage, and work-description information.
    • No work may start before permit issuance.
    • The residential permit expires if work does not commence within six months of issuance.
    • Subdivision review proceeds through preliminary plan, preliminary plat, drainage and improvement plans, final plat submission, county review, and Commissioners Court approval.
    • Additional permits may be required.

    residential permit commencement deadline: 6 months after issuance (permit expires if work has not commenced)

    “No work of any kind may start until a permit is issued.”
  • County-wide zoningAbsent

    As a Texas county, Hardin County has no zoning authority in unincorporated areas; its permit program lists only development, floodplain, subdivision and infrastructure permits, with no zoning ordinance.

    Hardin County - Permits ↗Scouted from the county site, not yet independently re-checked

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”
  • 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:”
    One more reviewed finding on this topic
    • Partial — Industrialized housing and buildings, modules, and modular components built for Texas under the Industrialized Housing and Buildings program.
      “Effective 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:”
  • 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.”
    One more reviewed finding on this topic
    • Limited — OSSFs using secondary treatment or drip irrigation in Texas.
      “A system using secondary treatment or drip irrigation must be inspected by a valid maintenance company once every four months, or be maintained by the single family homeowner, where allowed.”
  • Well permitLimited

    Drilling, equipping, operating, or completing a water well, or substantially altering a well or well pump, where the well is within a groundwater conservation district in Texas.

    • A groundwater conservation district must require a permit except as provided by Texas Water Code §36.117.
    • A district may not require a permit or permit amendment for maintenance or repair that does not increase production capability above the authorized or permitted production rate.
    • Permit applications must be in writing and sworn.
    • Whether a particular private well is exempt or subject to additional district requirements depends on the applicable groundwater conservation district's rules.

    permit application form: in writing and sworn

    “Except as provided by Section 36.117, a district shall require a permit for the drilling, equipping, operating, or completing of wells or for substantially altering the size of wells or well pumps.”
  • 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 — Certificates of occupancy in Hardin County.
  • Local zoning — Aggregate local zoning controls within Hardin County, including incorporated municipalities; the county materials reviewed do not establish the municipal zoning aggregate.
  • Short-term rentals — Short-term rental use in Hardin 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 Hardin County, Texas

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

Hardin County scores 68/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and low administrative friction for a quiet rural property. Watch-outs: about 52,868 people within a 30-minute drive.

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

Hardin 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 Hardin County Sanitarian. 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 Hardin County?

Living in an RV on your own land in Hardin County is allowed: Unincorporated Hardin County: no county rule sets this, because Hardin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing hardincountytx.gov. 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 Hardin County, Texas?

Land in Hardin County runs about $5,546 per acre, based on the latest county data.

What is the water situation in Hardin County?

Hardin County gets about 60.3" of rain a year, with severe drought in roughly 11.7% of years.

How remote is Hardin County?

A representative private-land location has about 52,868 people within a 30-minute drive and 6,976,957 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 Hardin compares in Texas

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