Bolthole Index

Erath County, Texas

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

65Index Score / 100
#71 of 254 in Texas

Unincorporated Erath County, Texas does not require a county building permit for business or residential construction and does not impose county zoning12. For property in a city or its extraterritorial jurisdiction, ask the city about building-permit and zoning requirements, while the Erath County Environmental Health Department handles septic permits countywide34. A county floodplain permit is still required before construction in a mapped flood zone5.

At a glance

Building permit
No county building permit for residential or business construction in unincorporated Erath County; cities and their ETJs set their own requirements1
Zoning approval
No county zoning approval in unincorporated Erath County; cities and their ETJs may impose their own zoning6
Septic permit
Erath County Environmental Health Department; required and inspected for every system, $250-$750 depending on system type47
RV / tiny home living
No county zoning restriction outside a municipality or ETJ; septic, floodplain, subdivision and setback rules can still apply891011
Owner-builder
No county permit exists to require an exemption from; you may build your own home, though state licensing for electrical, plumbing and HVAC work can still apply1213
Certificate of occupancy
No ordinary county certificate of occupancy; manufactured-home rental communities need infrastructure approval and a certificate of compliance for utility service1415
Floodplain permit
Required before construction starts in a FEMA-recognized flood zone5
Water wells
Register every well; an operating permit is required above 17 gallons per minute or on 10 acres or less unless the tract predates district formation16

Who to call

Septic permits

Erath County Environmental Health Department

On-site sewage facility (OSSF/septic) permitting, inspection, education and complaint investigation countywide; does not handle food-service health inspections

254-965-1414

Erath County Courthouse, 100 W Washington, Stephenville, TX 76401

Floodplain permits

Erath County Land Development Department

Floodplain development permits (via the Erath County Floodplain Administrator), subdivision regulations, driveway/setback standards, and manufactured home rental community regulations; does not issue building permits or perform residential construction inspections

254-434-5019

100 W Washington, Stephenville, TX 76401

Well permits

Middle Trinity Groundwater Conservation District

Water-well registration and operating permits in Erath County

(254) 965-6705

wells@middletrinitygcd.org

930 N. Wolfe Nursery Rd. - Stephenville, TX 76401

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

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

No county building permit is required for business or residential construction in unincorporated Erath County1. Erath County also does not inspect residential construction or remodeling and does not require a county certificate of occupancy914. That does not mean every approval disappears: a septic system needs a septic permit from Environmental Health, and construction in a FEMA-recognized flood zone needs a county floodplain permit before work starts9. For property inside a municipality or its extraterritorial jurisdiction, ask the city about building-permit requirements, but septic permitting remains with the Erath County Environmental Health Department countywide14. Texas sets statewide energy-code requirements for residential, commercial and industrial buildings, while local jurisdictions handle implementation and enforcement; we could not confirm whether Erath County has separately adopted a broader county building code17.

Who issues building permits in Erath County?

Erath County does not issue county building permits for business or residential construction in unincorporated areas, so there is no county building department for that work1. For property inside a city or its extraterritorial jurisdiction, ask the city about building permits and zoning approval; the county still handles septic permits through the Erath County Environmental Health Department34. Environmental Health is at the Erath County Courthouse, 100 W Washington, Stephenville, TX 76401, phone 254-965-141418. The Erath County Land Development Department handles floodplain development permits, subdivision regulations, driveway and setback standards, and manufactured-home rental-community regulations at 100 W Washington, Stephenville, TX 76401, phone 254-434-501919. Ask Land Development about a mapped flood zone before construction, because a county floodplain permit must be issued before work starts there5.

Does Erath County have zoning?

Erath County does not publish county zoning districts or require county zoning approval for business or residential construction in unincorporated areas6. Stephenville and Dublin set their own zoning inside city limits; Erath County Environmental Health still handles septic permits countywide20214. For ETJ property, ask the applicable city about its requirements3. Subdivision lots have setback lines of 50 feet from major-road rights-of-way, 25 feet from other public-road rights-of-way, or 15 feet for MURRD lots on those other roads; municipal requirements prevail when they conflict inside an ETJ11. Dividing unincorporated land may require a plat recorded with the County Clerk, and noncompliant divided tracts cannot obtain septic permits10.

How do septic permits work in Erath County?

Erath County requires permitting and inspection for every septic system in the county, a stricter local standard layered on top of Texas's statewide OSSF rules2223. The process starts with an application from the Environmental Health Department, followed by a complete site evaluation from a licensed site evaluator documenting soil and site conditions before any design work24. Fees are published: a standard system runs $250, one requiring maintenance runs $450, and commercial systems run $550 standard or $750 with maintenance, with a re-inspection fee of half the permit fee for each re-inspection7. Soils make this more than paperwork here: only 17.9% of Erath County's land is free of severe limitations for a conventional drain field, so expect many properties to need an engineered or alternative system25. Once approved, an Authorization to Construct is valid for one year, the installer must notify the county inspector at least five working days before the construction inspection, and excavations must stay open until that inspection is complete24. Texas has a narrow statewide exemption for some qualifying tracts of 10 acres or more, but Erath County states that it permits and inspects every septic system; ask Environmental Health before assuming the state exemption applies locally2622.

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

Unincorporated Erath County does not use county zoning to restrict RV living, tiny-home occupancy or temporary camping, and sets no zoning-based minimum dwelling size, minimum lot size or building-height limit8. For property in a municipality or its extraterritorial jurisdiction, ask the city about zoning requirements; septic permits remain with Erath County Environmental Health countywide34. Floodplain, septic, subdivision and setback rules can still affect placement91011. Outside municipal limits, land offered as 2 or more residential manufactured-home spaces for rent or lease for less than 60 months without a purchase option qualifies as a manufactured-home rental community15. The owner must obtain Commissioners Court approval of an infrastructure development plan before construction; utilities cannot supply water, sewer, gas or electricity until the owner provides a certificate of compliance15.

How do you build a home in Erath County, step by step?

  1. Confirm whether the parcel is unincorporated or inside a municipality or its ETJ; ask the city about building-permit and zoning requirements13.
  1. Confirm that any land division was properly platted and recorded before relying on the tract for a septic permit10.
  1. Ask Land Development about the floodplain and obtain a floodplain permit before construction if required519.
  1. Order the septic site evaluation and apply through Environmental Health before work begins424.
  1. Register any well with the Middle Trinity Groundwater Conservation District and determine whether an operating permit is required1627.
  1. Obtain a TxDOT driveway permit for access from a state highway28.
  1. Build without a county residential building permit or ordinary county home inspection while following energy-code, setback, subdivision and floodplain requirements that apply11711.

What should you check before buying land in Erath County?

Confirm whether the parcel is inside a municipality or its ETJ, because city requirements may differ from the county answers while county septic permitting continues34. Water and soils go together here: annual precipitation is about 33.9 inches, severe drought occurs in 30.4% of years, and only 17.9% of county soils lack severe limitations for a conventional drain field293025. Register every existing, new or replacement well with the Middle Trinity Groundwater Conservation District and determine whether it also needs an operating permit16. Check the floodplain and recorded plat before buying; construction in a FEMA-recognized flood zone needs a county permit, and an unlawfully divided tract cannot receive a septic permit510. Shared subdivision driveways require county inspection and approval before final plat approval31. The effective property-tax rate is about 1.1%, and the median annual bill is about $2,8363233.

Watch-outs

  • We could not confirm an agricultural exemption from Erath County platting or development requirements, or county short-term rental rules; ask Land Development before relying on either19.
  • For property in a municipality or its ETJ, ask the city about building-permit and zoning requirements; Erath County Environmental Health handles septic permits countywide34.

Sources

  1. County Clerk | Erath County, TX, quoted and re-checked
  2. County Clerk | Erath County, TX, quoted and re-checked
  3. County Clerk | Erath County, TX, quoted and re-checked
  4. County Clerk | Erath County, TX, quoted and re-checked
  5. Land Development, quoted and re-checked
  6. County Clerk — Required Permits, quoted and re-checked
  7. On-Site Sewage Facility Application Requirements, quoted and re-checked
  8. Texas law on county zoning and building authority
  9. Land Development | Erath County, TX, quoted and re-checked
  10. Erath County Subdivision Regulations Adopted and Effective 4.29.24, quoted and re-checked
  11. Erath County Subdivision Regulations Adopted and Effective 4.29.24, quoted and re-checked
  12. County Clerk | Erath County, TX (2026 county census)
  13. Texas law on county zoning and building authority
  14. Frequently Asked Questions - Erath County, quoted and re-checked
  15. Erath County Manufactured Home Community Regulations, quoted and re-checked
  16. Permits and Forms — Middle Trinity Groundwater Conservation District, quoted and re-checked
  17. Local Ordinances, quoted and re-checked
  18. Erath County Environmental Health Department (co.erath.tx.us)
  19. Erath County Land Development Department (co.erath.tx.us)
  20. Stephenville: One- and two-family residential district (R-2) (Erath County), quoted and re-checked
  21. Dublin: Sec. 102-323. Height and area regulations (Erath County), quoted and re-checked
  22. County Clerk | Erath County, TX, quoted and re-checked
  23. County Clerk | Erath County, TX, quoted and re-checked
  24. On-Site Sewage Facility Application Requirements, quoted and re-checked
  25. 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
  26. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  27. Middle Trinity Groundwater Conservation District (middletrinitygcd.org)
  28. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  29. Annual precipitation: Bolthole Index county data
  30. Share of years in severe drought: Bolthole Index county data
  31. Erath County Subdivision Regulations Adopted and Effective 4.29.24, quoted and re-checked
  32. Effective property tax rate: Bolthole Index county data
  33. Median property tax bill: 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

Like 5 of its 6 neighbors, Erath County requires no county building permit for a home.

RuleErath CountySomervell CountyComanche CountyHood CountyHamilton CountyBosque CountyEastland County
Building permitNot requiredNot requiredNot requiredNot requiredNot requiredLimitedNot required
County zoningNoNoNoYesNoNoNo
Septic permitsCounty Env. Health Dept.OSSFComanche CountyCounty Env. Health Dept.Hamilton CountyCounty Env. OfficeTCEQ

County locator

Erath County in Texas

65
County map
Erath County highlighted among the Texas counties · colored by Index score

How Erath County scores

Seclusion55100% ev.
Self-Sufficiency4996% ev.
Admin Boringness92100% ev.
Durability33100% ev.
Property Autonomy71100% ev.
Carry Cost72100% ev.

Evidence strength: 99%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$347kTypical home
1.1%Property tax
$4,099Land / acre
33.9"Annual rain
30.4% of yrsSevere drought
42 / yr (+27)Mid-century 100°F days
24.6 daysMid-century dry spell
1.99" (+5.7%)Mid-century 1-day rain
1.38×Wildfire change factor
100%Forward climate coverage
$2,489Home insurance / yr
0.6% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
27,955People within 30 min
4,162,598People within 2 hr
27,235Radius comparison (15 mi)
40.8People / sq mi
0%Federal land
93.6%Land at 15% slope or less
17.9%Soils rated "not limited" for septic (strict USDA rating)
123,458 acWorkable land screen
24.9%Wooded land
12.5 tonsBiomass / forest ac
65°FAvg temp

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Cities and towns in Erath 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.

Answers from the rulebook for Erath County

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

Erath County rules

  • Building permitNot required

    Business and residential construction in unincorporated Erath County outside municipalities and their extraterritorial jurisdictions.

    • Erath County does not issue building permits for business or residential construction.
    • If property is located in a municipality or its ETJ, the applicant must contact the city for its requirements.
    “Erath County does not have any zoning requirements or issue building permits for business or residential construction. If your property is located in a municipality or it’s ETJ you need to contact the City for their requirements.”
  • Owner-builder exemption · follows from the permit answerNot needed

    Unincorporated Erath County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, plumbing and HVAC work may still apply.

    • Erath County does not issue building permits for business or residential construction.
    • If property is located in a municipality or its ETJ, the applicant must contact the city for its requirements.
    “Erath County does not have any zoning requirements or issue building permits for business or residential construction. If your property is located in a municipality or it’s ETJ you need to contact the City for their requirements.”
  • InspectionsLimited

    Residential home construction and remodeling in unincorporated Erath County.

    • The county does not perform inspections related to residential home construction or remodeling.
    • Structures utilizing septic systems must obtain a permit from Environmental Health; the County Clerk page separately states that Erath County requires permitting and inspection for all septic systems.
    • Construction within a FEMA-recognized flood zone requires a permit before construction begins.
    • Municipal and ETJ requirements may apply separately.
    “Erath County does not issue permits/perform inspections related to residential home construction/remodeling. Structures utilizing septic systems will need to obtain a permit from the Environmental Health Department. Any construction within a FEMA recognized flood zone will require a permit PRIOR to start of construction.”
  • Certificate of occupancyNot required

    Certificate of occupancy requirements imposed by Erath County for property in unincorporated Erath County.

    • The county FAQ states that a certificate of occupancy is not required by Erath County.
    • The same FAQ states the county is rural with a population of less than 50,000 and that state law does not require these rules to be in place.
    • Municipal or ETJ requirements may apply separately.
    “It is not required to have a Certificate of Occupancy or zoning permits by Erath County. The county is a rural county a population of less than 50,000. It is not required by state law to have these rules in place. Erath County does not have a building inspector and the Erath County Fire Marshal’s Office does not inspect private homes or business in its jurisdiction.”
  • County-wide zoningAbsent

    County zoning requirements in Erath County, including business and residential construction; municipal and ETJ properties are subject to city requirements instead.

    • If property is located in a municipality or its ETJ, contact the city for its requirements.
    “Erath County does not have any zoning requirements or issue building permits for business or residential construction. If your property is located in a municipality or it’s ETJ you need to contact the City for their requirements.”
  • Local zoningVaries (with conditions)

    Aggregate local-zoning conclusion for properties across Erath County: the county itself has no zoning requirements, while incorporated municipalities and ETJs may impose city requirements.

    • Municipal or ETJ property requires contacting the applicable city for its requirements.
    • Municipal setback requirements prevail over county setback lines when the property is in the municipality’s ETJ.
    “Erath County does not have any zoning requirements or issue building permits for business or residential construction. If your property is located in a municipality or it’s ETJ you need to contact the City for their requirements.”
  • Zoning districtsNot published (with conditions)

    Zoning districts and zoning permits in unincorporated Erath County.

    • Erath County states that it has no zoning requirements and does not issue zoning permits or building permits for business or residential construction.
    • If the property is located in a municipality or its extraterritorial jurisdiction, the city’s requirements must be consulted.
    “Erath County does not have any zoning requirements or issue building permits for business or residential construction. If your property is located in a municipality or it’s ETJ you need to contact the City for their requirements.”
  • Minimum dwelling size · by state lawNo county rule

    Unincorporated Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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.”
  • SetbacksSpecified

    Building setback lines for lots in Erath County subdivisions outside municipal limits and applicable municipal ETJs.

    • Major highways and roads use a 50-foot setback from the edge of the right-of-way.
    • Other public roads use a 25-foot setback from the edge of the right-of-way.
    • MURRD uses a 15-foot setback from the edge of the right-of-way on public roads other than major highways and roads.
    • State and federal system roadways and County Roads 176, 177, 351, 386, 428, and 454 are designated major highways and roads; the Commissioners Court may designate additional roadways on the County Engineer's recommendation.
    • Municipal requirements prevail if the county setback conflicts with municipal requirements in a municipality's ETJ.

    major highway or road setback: 50 feet from edge of right-of-way · other public road setback: 25 feet from edge of right-of-way (MURRD uses 15 feet) · MURRD setback on other public roads: 15 feet from edge of right-of-way

    “The building setback line on major highways and roads shall be 50 feet from the edge of the right-of-way. The building setback line on all public roads other than major highways and roads shall be 25 feet from the edge of the right-of-way and 15 feet from the edge of the right-of-way for MURRD.”
  • Lot coverage · by state lawNo county rule

    Unincorporated Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 homesLimited

    Manufactured Home Rental Communities on land in Erath County outside municipal limits, including installation and occupancy of manufactured homes in those communities.

    • The owner must prepare an infrastructure development plan complying with the minimum infrastructure standards in Section IV.
    • The plan must be submitted to the commissioners’ court for approval before construction begins.
    • Construction may not begin before the plan is approved.
    • The rules define a Manufactured Home Rental Community as land separated into two or more spaces or lots rented, leased, or offered for rent or lease for a term of less than 60 months without a purchase option, for installation of manufactured homes for use and occupancy as residences.
    • A certificate of compliance is required before utilities may provide water, sewer, gas, or electric service to the community or a manufactured home in the community.

    application fee: 500 USD (Plus $1.00 per foot of roadway and $25 per space.) · plan approval deadline: 60 days after submission (Failure to reject within the prescribed period constitutes approval.) · plan expiration: 5 years after approval date

    “The owner of land located in Erath County outside the limits of a municipality who intends to use the land for a Manufactured Home Rental Community must have an infrastructure development plan prepared that complies with the minimum infrastructure standards that are set out below in Section IV. In addition, prior to beginning any construction, the owner must submit the plan to the commissioners’ court for approval. Construction may not begin before the plan is approved.”
  • Accessory dwellings · by state lawNo county rule

    Unincorporated Erath County: no county rule sets this, because Erath County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). Erath 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 and septic systems in Erath County.

    • The county page identifies the Erath County Environmental Health Department as the office handling septic permitting and inspection.
    • Initial contact must be made before any work begins.
    “Erath County Environmental Department, located on the first floor of the Erath County Courthouse, processes and records permits and maintenance records.”
  • Septic permitRequired

    All septic systems and other onsite sewage facilities in Erath County.

    • Erath County states that permitting is required for all septic systems.
    • Initial contact with the Environmental Health Department must occur before work begins.
    • The county’s local permitting program may be more stringent than state minimums.
    “Erath County requires the permitting and inspection for all septic systems.”
  • Septic inspectionRequired

    Septic systems and onsite sewage facilities in Erath County.

    • Erath County requires inspection for all septic systems.
    • For the county application, successful inspection is required before a permit to operate is granted.
    • The county Environmental Department is authorized to conduct lot evaluation and inspection.
    “Erath County requires the permitting and inspection for all septic systems.”
  • Well permitLimited

    Water wells within the Middle Trinity Groundwater Conservation District, including Erath County territory.

    • All existing, new, and replacement wells must be registered, and ownership transfers of existing wells must be registered.
    • An operating permit application is required to drill when the well is estimated to pump more than 17 gallons per minute.
    • An operating permit application is required to drill on a tract of 10 acres or less unless the tract was platted before District formation.
    • The operating permit application must be submitted with a complete Well Registration Form.
    • A refundable $200 deposit is due when the application is submitted and is refunded within 30 days after the District receives the state driller's report.
    • The permit is subject to approval by the Board of Directors; no well may be drilled until approval.
    • The District covers Erath, Comanche, Bosque, and Coryell Counties.

    high-yield threshold: > 17 gallons per minute · small-tract threshold: <= 10 acres (Unless platted prior to District formation.) · refundable application deposit: 200 USD (Refunded within 30 days after receipt of the state driller's report.)

    “Use This Form to Apply for a Permit to Drill if: The well is estimated to pump more than 17 gallons per minute On 10 acres or LESS, unless platted prior to District formation (See District Rule 5.4 (A) (B))”
  • Mandatory utility hookupConditional

    Utility service to a manufactured home rental community or a manufactured home in such a community located outside the limits of a municipality in Erath County.

    • The owner must submit an infrastructure development plan to the Erath County Commissioners Court before construction begins.
    • The infrastructure development plan must be approved before construction begins.
    • The owner must provide the utility with a Certificate of Compliance before water, sewer, gas, or electric utility service may be provided.
    • The plan must include an adequate public or community water supply; if water is provided by a utility, utility certification that water is available for each planned space or lot must be attached.
    • The plan must provide either access to sanitary sewer lines with utility certification of service availability, or plans for on-site sewage facilities in accordance with Chapter 366, Health and Safety Code.
    • The Commissioners Court must approve or reject the plan in writing within 60 days; failure to reject within that period constitutes approval.
    • A final inspection must be completed no later than the second business day after written completion notice, and the Certificate of Compliance must be issued no later than the fifth business day after the final inspection if the infrastructure complies.
    • The plan expires five years after approval.
    • The application fee is $500 plus $1.00 per foot of roadway plus $25 per space.
    • Municipal or extraterritorial-jurisdiction requirements may also apply.

    plan decision deadline: 60 days (Failure to reject within the period constitutes approval.) · final inspection deadline: 2 business days (After written completion notice.) · certificate deadline: 5 business days (After final inspection, if infrastructure complies.) · plan duration: 5 years (After approval.) · application fee base: 500 USD (Plus $1.00 per foot of roadway and $25 per space.)

    “A utility may not provide utility services, including water, sewer, gas, and electric services, to a Manufactured Home Rental Community or to a manufactured home in the community unless the owner provides the utility with a copy of the Certificate of Compliance.”
  • Subdividing landRegulated (with conditions)

    Division and subdivision of land located outside the limits of a municipality in Erath County, including divisions creating lots or public-use areas.

    • The owner must prepare a subdivision plat when dividing a tract into two or more parts to lay out a subdivision, lots, or streets, alleys, squares, parks, or other parts intended for public use.
    • A division is covered regardless of whether made by metes and bounds, deed, contract for deed, contract for sale, another executory contract, or any other method.
    • The final plat must be filed and recorded with the Erath County Clerk.
    • A property fronting on a public street whose boundary has not changed since January 5, 1975 is considered a legal lot.
    • The County adopts the exceptions to platting requirements in Texas Local Government Code Section 232.0015, including later legislative amendments.
    • Additional exemptions include sale of a tract in its entirety when its boundary has not changed since January 5, 1975; daughter tracts created solely to plat them as individual subdivisions after submitting Final Plat Part A for the project as a whole; qualifying boundary adjustments between adjacent landowners with the same number of tracts and owners after the transaction, subject to a new deed for each reconfigured parcel; qualifying financing surveys where possession and primary beneficial ownership remain unified; legitimate lien foreclosures; divisions by final decree of a court with appropriate jurisdiction; and specified homestead or non-homestead separations.
    • For a homestead owner residing on the parent tract, the separation exemption is limited to a tract less than 10 acres and more than 2 acres, with 200 feet of road frontage, once every 2 years, and no drainage way greater than 64 acres through the new tract.
    • For an owner not residing on the parent tract, the comparable separation exemption may be used once every 4 years, with the same acreage, frontage, and drainage-way limits.
    • Boundary-adjustment exemptions do not apply to changes between legally platted lots or additions/subtractions from a legally platted subdivision; land added through such an adjustment becomes integral to the tract and may not be separately conveyed except in compliance with subdivision laws; and the adjustment exemption may not be exercised within two years of another exemption.
    • All additional exemptions must be approved in writing by the County Engineer before division, supported by an affidavit stating the detailed basis for exclusion and copies of the deeds or other instruments creating the daughter tracts.
    • Plat applications require applicable review fees. The published application schedule lists Final Plat Part A at $500 plus $30 per lot; construction plans at $30 per lot plus $1.00 per road foot; Final Plat Part B at $500 plus $1.00 per road foot plus $25 per lot; and amended plat/replat at $500.
    • The County has 10 business days to notify an applicant of missing items; the 30-day review period begins after a complete application, and a revised complete application receives an additional 15-day review period.
    • A final plat must be recorded within five years after Commissioners Court approval or approval expires, subject to one possible six-month extension.
    • An incomplete application expires 45 days after submission if it remains incomplete after proper notification.
    • For property in a municipality or its ETJ, municipal approval requirements may apply; the regulations identify Stephenville ETJ and Dublin ETJ as requiring Erath County review, with municipal involvement as specified.
    • A tract subdivided without compliance is ineligible to obtain a permit for construction or modification of an on-site sewage facility located on the tract.

    minimum homestead separation acreage: more than 2 acres and less than 10 acres acres (owner resides on parent tract; once every 2 years) · minimum non-homestead separation acreage: more than 2 acres and less than 10 acres acres (owner does not reside on parent tract; once every 4 years) · required road frontage for separation exemption: >= 200 feet (homestead or non-homestead separation exemption) · maximum drainage area through new tract: <= 64 acres (homestead or non-homestead separation exemption) · Final Plat Part A fee: 500 + 30 per lot USD · construction plans fee: 30 per lot + 1.00 per road foot USD · Final Plat Part B fee: 500 + 1.00 per road foot + 25 per lot USD · amended plat/replat fee: 500 USD

    “the 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 two or more parts to lay out: A1.1.1 a subdivision of the tract, including an addition: A1.1.2 lots: or A1.1.3 streets, alleys, squares, parks, or other parts of the tract intended to be dedicated to public use”
  • Driveway accessLimited

    Driveway access in Erath County subdivisions and properties requiring a county 9-1-1 address.

    • For subdivisions requiring shared driveway access to lots, driveways must be constructed, inspected, and approved by the County before Final Plat Part-B approval.
    • If property access is only from a State Highway or Farm to Market roadway, the 9-1-1 address application must include a copy of the TxDOT driveway permit.
    “For subdivisions that require shared driveway access to lots, all driveways will be required to be constructed, inspected and approved by the County before the Final Plat Part - B approval.”
  • Building in a floodplainRequired

    Construction and development in FEMA-recognized flood zones and areas subject to the Erath County Flood Damage Prevention Ordinance.

    • The permit is required before construction starts.
    • The application is presented to the Floodplain Administrator on county-furnished forms.
    • The application may include plans in duplicate drawn to scale showing location, dimensions, and elevations of proposed alterations and structures, including manufactured homes, in relation to areas of special flood hazard.
    • Required information includes lowest-floor elevation for new and substantially improved structures, nonresidential floodproofing elevation, professional engineer or architect certification for nonresidential floodproofed structures, and a description of watercourse or natural-drainage alterations or relocations.
    “Any construction within a FEMA recognized flood zone will require a permit PRIOR to start of construction.”
  • Permit feesPublished (with conditions)

    Erath County on-site sewage facility permits for single-family, residential development, and commercial facilities.

    • Standard systems are listed at $250.00.
    • Systems requiring maintenance are listed at $450.00.
    • Standard commercial systems are listed at $550.00.
    • Commercial systems requiring maintenance are listed at $750.00.
    • A re-inspection fee equal to one-half of the permit fee must be paid for each re-inspection.
    • Fees are non-refundable and must be paid by cash, check, or money order.
    • Payments must be payable to Erath County.

    standard system fee: 250 USD (OSSF permit) · system requiring maintenance fee: 450 USD (OSSF permit) · standard commercial system fee: 550 USD (OSSF permit) · commercial system requiring maintenance fee: 750 USD (OSSF permit) · re-inspection fee: 0.5 permit fee (for each re-inspection)

    “STANDARD SYSTEMS $250.00 SYSTEMS REQUIRING MAINTENANCE $450.00 STANDARD (COMMERCIAL) $550.00 SYSTEMS REQUIRING MAINTENANCE (COMMERCIAL) $750.00”
  • Permit processPublished (with conditions)

    Erath County on-site sewage facility permit applications.

    • Obtain an application from the Erath County Environmental/Sanitation Office.
    • A licensed site evaluator must conduct a complete site evaluation and submit a detailed report documenting soil and site conditions.
    • Standard systems may be prepared by the owner or installer; non-standard and proprietary systems must be prepared by a Professional Engineer or Sanitarian.
    • Submit the completed application, technical information sheet, site evaluation results, planning materials, any required recorded affidavit, any required signed maintenance contract, and directions to the site.
    • Non-standard planning materials may be reviewed by TCEQ regional office staff in Fort Worth.
    • If approved, an Authorization to Construct is issued; problem resolution can take up to 30 days and the authorization is valid for one year from issuance.
    • The installer must notify the Erath County Inspector at least five working days before construction inspection, and excavations must remain open until inspection is complete.
    • If installation is approved, a Notice of Approval is issued.

    authorization validity: 1 year from issuance · inspection notice: >= 5 working days before construction inspection · problem resolution: <= 30 days

    “Obtain an application from the Erath County Environmental / Sanitation Office. A licensed site evaluator must conduct a complete site evaluation. A detailed report, documenting the results of the soil and site conditions must be submitted.”

Texas rules that apply here

  • Building code adoptedPartial

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

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

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

    “July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
    2 more reviewed findings on this topic
    • Partial — Statewide Texas building-energy-code requirements applicable in Erath County, including single-family homes and other residences, commercial, and industrial buildings.
      “The applicable code for other residences and commercial and industrial buildings is the 2015 International Energy Conservation Code. These energy codes are effective statewide.”
    • 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:”
  • 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.

  • Agricultural exemption — Agricultural exemption from Erath County development, platting, or construction requirements.
  • Short-term rentals — Short-term rentals in Erath County, Texas.

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 Erath County, Texas

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

Erath County scores 65/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: elevated mid-century heat, water, rain, or wildfire exposure.

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

Erath County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Erath County Environmental Health Department (TCEQ authorized agent). 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 Erath County?

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

Land in Erath County runs about $4,099 per acre, based on the latest county data.

What is the water situation in Erath County?

Erath County gets about 33.9" of rain a year, with severe drought in roughly 30.4% of years.

How remote is Erath County?

A representative private-land location has about 27,955 people within a 30-minute drive and 4,162,598 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 Erath compares in Texas

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