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 issue building permits or perform inspections for residential home construction or remodeling, and the county has no zoning requirements12. Texas counties simply lack general authority to require either, outside a handful of narrow statutory exceptions Erath County hasn't triggered34. Two things still require a county permit everywhere in Erath County: septic systems, through the Environmental Health Department, and construction inside a mapped flood zone56.

At a glance

Building permit
Not required or issued by the county for residential or business construction in unincorporated Erath County; municipalities and their ETJs set their own rules1
Zoning
None countywide; property inside a municipality or its ETJ follows that city's requirements instead2
Septic permits
Erath County Environmental Health Department; required and inspected for every system, $250-$750 depending on system type57
RV / tiny home living
Unrestricted by county zoning outside a municipality or ETJ; septic, floodplain and subdivision rules can still apply869
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 apply1011
Certificate of occupancy
Not required by the county; Erath County has no building inspector12
Floodplain permit
Required before construction starts in a FEMA-recognized flood zone13
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 formation14

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

[email protected]

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

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

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

No. Erath County does not have any zoning requirements or issue building permits for business or residential construction anywhere in the unincorporated county115. Texas law backs this up: counties only get authority to require fire-code or residential-standard permits under narrow conditions, such as a population over 250,000 (or being adjacent to one) for commercial and larger multifamily fire-code permits, or a formal resolution near an international border for residential standards, and Erath County hasn't been shown to meet or adopt either3. The county's own FAQ spells out why: Erath County is rural, with a population under 50,000, and state law doesn't require it to have a certificate-of-occupancy or building-inspection program, so it doesn't have a building inspector12. Two exceptions still apply everywhere in the county: a structure using a septic system needs an Environmental Health permit, and any construction inside a FEMA-recognized flood zone needs a floodplain permit before work starts6. If your property is inside a municipality or its extraterritorial jurisdiction (ETJ), none of this applies; contact that city directly for its own permit requirements1.

Who handles septic and floodplain permits in Erath County?

There's no building department to call, because Erath County doesn't run one1. For septic systems, the Erath County Environmental Health Department provides information, education, permitting and inspection for new and existing systems, and investigates complaints about failing or improperly maintained ones16. It's on the first floor of the Erath County Courthouse at 100 W Washington, Stephenville, TX 76401, phone 254-965-141416. For floodplain permits, subdivision rules, driveway and setback standards, and manufactured home rental community regulations, the Erath County Land Development Department is the office of record, also at 100 W Washington, Stephenville, TX 76401, phone 254-434-501917. The Land Development page directs anyone unsure whether their land sits in a FEMA-recognized flood zone to contact the Erath County Floodplain Administrator before starting construction17.

Does Erath County have zoning?

No, not outside cities. Erath County does not have any zoning requirements for business or residential construction; if your property is in a municipality or its ETJ, you need to contact that city for its requirements instead218. Texas law only gives counties zoning power over a handful of specially defined areas, like Padre Island beaches in Cameron or Willacy County or a few named lakes and military zones, none of which touch Erath County4. Because there's no county zoning ordinance, the county sets no minimum home size, no minimum lot size, no setbacks and no building-height limit on its own, and RVs, tiny homes, manufactured homes and temporary camping are all unrestricted under county rules outside a municipality or ETJ8. One county-level land-use rule still applies regardless of zoning: subdivided lots carry building setback lines, 50 feet from the right-of-way on major highways and roads, 25 feet on other public roads (15 feet for MURRD), though municipal requirements prevail instead inside a city's ETJ9. A separate rule covers Manufactured Home Rental Communities on unincorporated land: the owner must get an infrastructure development plan approved by the commissioners' court, with a $500 application fee plus per-foot and per-space charges, before construction begins19.

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 rules2021. 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 work22. 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 system23. 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 complete22. 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 locally2420.

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

Unincorporated Erath County has no zoning ordinance restricting how you occupy your own land, so RV living, tiny homes, manufactured homes and temporary camping are all unrestricted under county rules, with no minimum home size or lot size to meet8. That changes the moment your land crosses into a municipality or its ETJ, since those areas follow the city's own requirements instead of the county's2. If your land sits in a mapped flood zone, the floodplain development permit still applies to placing a structure there, RV or otherwise, so check with the Land Development Department first1713. No official Erath County source addresses short-term rentals specifically, so if you plan to rent the property out, confirm current rules directly with the county and, if applicable, the nearest municipality before you buy or build.

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

  1. Confirm whether your parcel is inside a municipality or its ETJ; if so, contact that city for its requirements2.
  1. Ask the Land Development Department whether the parcel is in a FEMA-recognized flood zone and obtain a floodplain permit before construction if it is1713.
  1. Order the septic site evaluation and apply through Environmental Health; Erath County requires a permit and inspection for every system2220.
  1. Register any existing, new or replacement well with the Middle Trinity Groundwater Conservation District and determine whether an operating permit is also required1425.
  1. If the driveway connects to a state highway, submit Form 1058 to TxDOT and give 24-hour notice before construction begins26.
  1. Build without a county residential building permit or ordinary county home inspection, while following any applicable subdivision setback and floodplain rules19.

What should you check before buying land in Erath County?

Confirm whether the parcel is inside a municipality or its ETJ before applying the county-level answers above, because city requirements can differ2. 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 field272823. Every existing, new and replacement well must be registered with the Middle Trinity Groundwater Conservation District; a permit is required for a well expected to exceed 17 gallons per minute or on a tract of 10 acres or less unless that tract was platted before district formation14. Check the floodplain before buying, because construction in a FEMA-recognized flood zone needs a county permit13. For a recently divided tract, confirm subdivision review and legal access; shared subdivision driveways must be built, inspected and approved before final plat approval29. The effective property-tax rate is about 1.1%, and the median annual bill is about $2,8363031.

Watch-outs

  • No official Erath County source addresses an agricultural exemption from platting or development requirements, or short-term rental rules; confirm both directly with the Land Development Department before relying on either17.
  • Property inside Stephenville, Dublin, or any other Erath County municipality (or its ETJ) follows that city's building, zoning and permit rules, not the countywide answers in this guide2.

Sources

  1. County Clerk | Erath County, TX (2026 county census)
  2. County Clerk | Erath County, TX (2026 county census)
  3. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  4. Local Government Code Chapter 231, County Zoning Authority (Texas statewide rule), quoted and re-checked
  5. County Clerk | Erath County, TX (2026 county census)
  6. Land Development | Erath County, TX, 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. Erath County Subdivision Regulations Adopted and Effective 4.29.24, quoted and re-checked
  10. County Clerk | Erath County, TX (2026 county census)
  11. Texas law on county zoning and building authority
  12. Frequently Asked Questions - Erath County, quoted and re-checked
  13. Land Development, quoted and re-checked
  14. Permits and Forms — Middle Trinity Groundwater Conservation District, quoted and re-checked
  15. County Clerk | Erath County, TX, quoted and re-checked
  16. Erath County Environmental Health Department (co.erath.tx.us)
  17. Erath County Land Development Department (co.erath.tx.us)
  18. County Clerk | Erath County, TX, quoted and re-checked
  19. Erath County Manufactured Home Community Regulations, quoted and re-checked
  20. County Clerk | Erath County, TX, quoted and re-checked
  21. County Clerk | Erath County, TX, quoted and re-checked
  22. On-Site Sewage Facility Application Requirements, quoted and re-checked
  23. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  24. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  25. Middle Trinity Groundwater Conservation District (middletrinitygcd.org)
  26. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  27. Annual precipitation: Bolthole Index county data
  28. Share of years in severe drought: Bolthole Index county data
  29. Erath County Subdivision Regulations Adopted and Effective 4.29.24, quoted and re-checked
  30. Effective property tax rate: Bolthole Index county data
  31. Median property tax bill: Bolthole Index county data

Written September 28, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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County locator

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%Septic soil without severe limits
123,458 acWorkable land screen
24.9%Wooded land
12.5 tonsBiomass / forest ac
65°FAvg temp

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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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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.”
  • 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:”
  • county zoning authorityLimited

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

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

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

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

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

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

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

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

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 Texas law gives zoning power only to certain counties, and Erath County has no zoning ordinance. 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.

Off-grid gear

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

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How Erath compares in Texas

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