Bolthole Index

Clay County, Texas

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

49Index Score / 100
#147 of 254 in Texas

Unincorporated Clay County, Texas does not require a county building permit or impose county zoning12. Septic systems generally need a permit, and newly subdivided land is subject to county platting, lot-size, road, drainage and floodplain rules34.

At a glance

Building permit
Not required for ordinary construction in unincorporated Clay County21
Zoning
No county zoning in unincorporated Clay County51
Septic permit
Generally required before construction, installation, alteration, extension or repair3
RV / tiny-home living
Unrestricted by county zoning on unincorporated land; septic and subdivision rules can still apply634
Subdivision lot size
At least 1.5 net acres with OSSF, or 2 acres with both a well and OSSF4
Subdivision road setbacks
50 feet from state or federal road right-of-way; 25 feet from other road right-of-way4
Owner-builder
An owner may act as general contractor; self-installed OSSF is conditional on local approval and state requirements78
Septic soil difficulty
Only 2.2% of county soils lack severe limits for a conventional drain field9

Who to call

Septic permits

Clay County OSSF (Septic) Permits

On-site sewage facility permits for unincorporated Clay County

(940) 447-5032

Also useful

Clay County Judge's Office

General questions about the county's building, zoning and development rules

940-538-4651

[email protected]

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 Clay County, Texas?

No county building permit is required for ordinary construction in unincorporated Clay County; the county's notice says that no building permits or zoning requirements are required there10. Texas counties have limited building authority, and state law does not give a county prior-approval power for ordinary new residential construction211. A home, cabin, barn or shop on unincorporated land therefore does not go through a general Clay County building-permit review2.

That answer does not erase separate development rules. An OSSF generally needs approval before work begins, a land division may require a plat, construction in the floodplain of a regulated subdivision requires a county flood permit, and access to a state highway requires a TxDOT driveway permit3412. Incorporated cities can also apply their own rules because the county notice is expressly limited to unincorporated Clay County1.

Who handles Clay County permits and how do you reach them?

Clay County does not identify a general building department for ordinary construction on unincorporated land because the county does not require that building permit10. For septic work, call Clay County's OSSF permit contact at the number shown above; the county specifically directs building plans that include an on-site sewage facility to that contact13. For questions that fall outside the county's short building-and-zoning notice, contact the Clay County Judge's Office14.

The correct office changes with the work. A subdivision application goes through the county's plat-review and Commissioners Court process15. A new or altered driveway on a Texas state highway goes through the local TxDOT district using Form 1058, and construction cannot begin until the permit is fully executed16. We could not confirm a general Clay County building-inspection or certificate-of-occupancy program, so ask the Judge's Office before relying on their absence for an unusual project14.

Does Clay County have zoning?

Unincorporated Clay County has no county zoning requirements1. County zoning therefore does not set a general minimum dwelling size, building height, lot coverage rule or use restriction for an RV, tiny home, manufactured home or accessory dwelling6. That conclusion applies outside incorporated municipalities; city rules may differ17.

Subdivision standards are a separate layer, not zoning. For lots created under Clay County's subdivision rules, the net minimum is 1.5 acres when an OSSF is used and 2 acres when both a water well and OSSF are present4. Those subdivision lots also need at least 100 feet of county-road frontage, with building setbacks of 50 feet from the edge of a state or federal road right-of-way and 25 feet from other road rights-of-way4. A municipality's different setback controls within its extraterritorial jurisdiction4.

How do septic permits work in Clay County?

A permit and approved plan are generally required before constructing, installing, altering, extending or repairing an OSSF in Clay County3. Contact the county's OSSF permit line before choosing or installing a system13. For permitted work, the installer must request the initial, final and any other required construction inspections from the permitting authority18.

Site conditions deserve early attention because only 2.2% of Clay County soils lack severe limitations for a conventional drain field9. That rating supports budgeting for a site evaluation and the possibility of an alternative design9.

Texas has a narrow 10-acre permit exemption, but it requires a qualifying site evaluation, a single-family dwelling as the tract's only dwelling, at least 100 feet between every OSSF component and the property line, on-site effluent disposal, and no nuisance or groundwater pollution3. Clay County's subdivision rules are separate: a newly subdivided lot using OSSF must meet the county's net-lot standards even when a statewide septic exemption might otherwise be considered4.

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

Clay County zoning does not restrict RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping on unincorporated land6. Clay County also does not impose a zoning-based minimum dwelling size there6. An incorporated city can have a different answer because the county's no-zoning statement covers only unincorporated areas17.

Sanitation and development rules still matter. An OSSF serving an RV or tiny home generally requires a permit unless every condition of a state exemption is satisfied19. A manufactured-home rental community development is subject to the county subdivision design standards, and a parcel created through subdivision can carry minimum lot size, frontage and setback requirements4. We could not confirm countywide rules for utility connections, private wells or short-term rentals, so ask the relevant utility and the Clay County Judge's Office about the specific parcel before purchase14.

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

  1. Confirm that the parcel is outside an incorporated city; Clay County's no-building-permit and no-zoning statement applies only to unincorporated land1.
  2. Confirm whether the parcel is an existing tract or part of a subdivision, because county platting, lot-size, frontage, setback, drainage and floodplain standards apply to regulated subdivisions4.
  3. Arrange the septic site evaluation and contact the county OSSF permit line before installation133.
  4. If dividing land, submit a complete subdivision application and required fees; the 30-day plat-review clock begins only after both are received20.
  5. If construction is in a subdivision floodplain, obtain the Clay County flood permit required by the subdivision rules4.
  6. For state-highway access, submit Form 1058 to TxDOT and wait for a fully executed permit before starting work in the right-of-way16.
  7. Proceed without a general county residential building permit, while scheduling all required OSSF inspections218.

What should you check before buying land in Clay County?

Start with jurisdiction and plat history. Verify that the tract is truly unincorporated, and ask whether a recent division required county plat approval121. For a subdivision lot with OSSF, confirm that easements, rights-of-way and floodplain acreage were excluded when calculating the 1.5-acre net minimum; a lot with both a well and OSSF needs 2 acres4.

Price septic feasibility before closing because only 2.2% of county soils lack severe limits for a conventional drain field9. Verify legal access and determine whether the driveway meets subdivision culvert rules or needs a state-highway permit2212. Ask the Judge's Office whether a floodplain permit applies if the tract is not within a regulated subdivision, because we could not confirm that broader trigger14. Typical effective property tax is about 1.4%, and the median annual property-tax bill is about $2,1942324.

Watch-outs

  • No county zoning does not mean no dimensional rules: Clay County's subdivision standards impose lot-size, frontage and road-setback requirements on regulated subdivision lots4.
  • Clay County's subdivision document is marked as updated in 2023, while the county page identifies a 2024 version; ask the County Judge's Office for the current rules before filing1514.
  • We could not confirm a general floodplain-permit trigger outside regulated subdivisions, so ask the Clay County Judge's Office about flood-hazard land before construction14.

Sources

  1. Zoning & Building Permits- Unincorporated Areas, quoted and re-checked
  2. Texas Local Government Code Chapter 233 (County Regulation) (2026 county census)
  3. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  4. Clay County Subdivision Rules and Regulations, quoted and re-checked
  5. Zoning & Building Permits- Unincorporated Areas (2026 county census)
  6. Texas law on county zoning and building authority
  7. Homebuilders and Real Property Services, quoted and re-checked
  8. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  9. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  10. Zoning & Building Permits- Unincorporated Areas, quoted and re-checked
  11. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  12. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  13. Clay County OSSF (Septic) Permits (claycountytx.net)
  14. Clay County Judge's Office (claycountytx.net)
  15. Clay County Subdivision Rules and Regulations, quoted and re-checked
  16. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  17. Zoning & Building Permits- Unincorporated Areas, quoted and re-checked
  18. On-Site Sewage Facility Rules Compilation, quoted and re-checked
  19. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  20. Zoning & Building Permits- Unincorporated Areas, quoted and re-checked
  21. Texas Local Government Code Chapter 232: County Regulation of Subdivisions, quoted and re-checked
  22. Clay County Subdivision Rules and Regulations, quoted and re-checked
  23. Effective property tax rate: Bolthole Index county data
  24. 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.

Found land here? Start a Property Hunt →

County locator

Clay County in Texas

49
County map
Clay County highlighted among the Texas counties · colored by Index score

How Clay County scores

Seclusion41100% ev.
Self-Sufficiency2398% ev.
Admin Boringness91100% ev.
Durability43100% ev.
Property Autonomy71100% ev.
Carry Cost80100% 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 →

$208kTypical home
1.4%Property tax
$2,259Land / acre
32.5"Annual rain
29.6% of yrsSevere drought
51.7 / yr (+27.4)Mid-century 100°F days
25 daysMid-century dry spell
1.94" (+2.6%)Mid-century 1-day rain
1.35×Wildfire change factor
100%Forward climate coverage
$2,647Home insurance / yr
-1.1% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
55,236People within 30 min
3,354,137People within 2 hr
8,092Radius comparison (15 mi)
9.9People / sq mi
0%Federal land
99.6%Land at 15% slope or less
2.2%Septic soil without severe limits
14,690 acWorkable land screen
9.9%Wooded land
8.1 tonsBiomass / forest ac
64°FAvg temp

Scout Clay County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Clay County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Answers from the rulebook for Clay County

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

Clay County rules

  • County-wide zoningAbsent

    County zoning requirements in unincorporated areas of Clay County, Texas.

    • The source addresses unincorporated areas only; incorporated municipalities may have separate rules.
    • On-site sewage facility permitting remains applicable where building plans include OSSF.
    “No building permits or zoning requirements are required in unincorporated areas of Clay County, Texas.”
  • Local zoningAbsent

    County-administered zoning requirements in unincorporated areas of Clay County, Texas.

    • This finding does not resolve zoning adopted by incorporated municipalities within Clay County.
    • County subdivision, floodplain, sewage, and other non-zoning regulations may still apply.
    “No building permits or zoning requirements are required in unincorporated areas of Clay County, Texas.”
  • Zoning districtsNot published

    Zoning districts and zoning requirements in unincorporated areas of Clay County.

    • The county statement is limited to unincorporated areas.
    • The statement does not address zoning rules administered by incorporated municipalities.
    “No building permits or zoning requirements are required in unincorporated areas of Clay County, Texas.”
  • Minimum dwelling size · by state lawNo county rule

    Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay County's own reviewed answer confirms it has no county-wide zoning.

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

    Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay County's own reviewed answer confirms it has no county-wide zoning.

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

    Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay County's own reviewed answer confirms it has no county-wide zoning.

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

    Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay County's own reviewed answer confirms it has no county-wide zoning.

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

    Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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.”
  • Subdividing landRegulated (with conditions)

    Subdivision platting, development, and construction in the unincorporated area of Clay County, Texas.

    • The rules apply to all unincorporated areas of Clay County, Texas.
    • A subdivision requires county application, plat review, approval, and recording; the Commissioners Court may refuse approval if the plat does not meet the rules or required bonds are not filed.
    • Every application must include fees established by a County-adopted fee schedule; fees are nonrefundable unless otherwise specified, and the fee schedule may be amended by the Commissioners Court.
    • The statutory 30-day plat-approval period begins upon receipt of a complete application and required fees and applies independently to preliminary and final plats.
    • Preliminary plats must be approved before a final plat may be submitted; preliminary-plat approval is effective for one year and does not constitute acceptance of the subdivision.
    • For subdivisions in a city's extraterritorial jurisdiction, county and municipal review may both apply; the more stringent regulations prevail, and county approval does not precede municipal approval where the rules require municipal approval first.
    • Final plats must be recorded within six months after Commissioners Court approval; one six-month extension may be granted.
    • Construction not completed within two years after recording is subject to current County standards and regulations, and the County may require the subdivision to be replatted.
    • Net minimum lot size is 1.5 acres when an on-site sewage facility is present, excluding rights-of-way, drainage easements, utility easements, and floodplain area; the minimum is 2 acres if a water well is present and an on-site sewage facility is used; without an on-site sewage facility, the County determines minimum lot size independently.
    • Lots adjoining a county road require at least 100 feet of road frontage.
    • Building and setback lines are 50 feet from the edge of the right-of-way on state and federal roads and 25 feet on other roads; municipal ETJ setbacks apply if they differ.
    • Flag lots and reserve strips are prohibited.
    • Flood-zone subdivisions must comply with the listed floodplain requirements, including a Clay County flood permit for construction in the floodplain and subtraction of floodplain area when determining minimum lot size.
    • Construction and maintenance bonds, engineering plans, drainage, utility, water, sewage, stormwater, and road requirements also apply; construction plans require a Texas-licensed professional engineer's seal, unless a stated waiver is granted.

    net minimum lot size with on-site sewage facility: >= 1.5 acres (Excludes right-of-way, drainage easement, utility easement, and floodplain area.) · minimum lot size with water well and on-site sewage facility: >= 2 acres · minimum county-road frontage: >= 100 feet · building setback from state or federal road right-of-way edge: 50 feet (Municipal ETJ setback applies if different.) · building setback from other road right-of-way edge: 25 feet (Municipal ETJ setback applies if different.) · final plat recording deadline after Commissioners Court approval: 6 months (One six-month extension may be granted.) · construction completion deadline after recording: 2 years (Otherwise subject to current County standards and regulations; County may require replating.)

    “The provision of the Court order shall apply to all of the unincorporated area of Clay County, Texas.”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Subdivision and resubdivision of land in the unincorporated area of Clay County, Texas.
      “The Commissioners Court of Clay County shall have the authority to refuse to approve and authorize any map or plat of any such subdivision, unless such map or plat meets the requirements as set forth in these land development rules and regulations; and there is submitted at the time of approval of such map or plat financial security as may be required by these rules. [...] The provision of the Court order shall apply to all of the unincorporated area of Clay County, Texas.”
    • Regulated (with conditions) — Subdivision, platting, and development of land in the unincorporated area of Clay County, Texas.
      “The provision of the Court order shall apply to all of the unincorporated area of Clay County, Texas.”
  • Driveway accessLimited

    Driveway culvert and access-related drainage requirements for subdivision lots in the unincorporated area of Clay County, Texas.

    • The County regulations apply to all of the unincorporated area of Clay County, Texas.
    • Drainage construction plans must show the size of all driveway culverts needed to carry the design flow of water at each lot in the subdivision when installed at the designed ditch grade.
    • The culvert design must be sized by a Registered Professional.
    • A map or list containing the size of each pipe must be attached to the plat.
    • The developer is responsible for notifying builders and lot owners of the requirement and ensuring the properly sized culvert is installed.
    “the size of all driveway culverts [...] at each lot in the subdivision”
  • Permit feesPublished (with conditions)

    Subdivision application and inspection fees for subdivisions in the unincorporated area of Clay County, Texas.

    • Every subdivision application must include the required fees set forth in a County-adopted Fee Schedule.
    • Unless otherwise specified, the fees are nonrefundable.
    • The Commissioners Court may amend the Fee Schedule from time to time.
    • The official county clerk page links a November 2024 subdivision-regulations version; the text-readable fee schedule reviewed is contained in the official PDF approved September 25, 2023.

    Preliminary Plat application fee: 500 USD plus $20 per lot · Final Plat application fee: 500 USD plus $20 per lot · Replat application fee: 750 USD plus $20 per lot · Amending Plat application fee: 250 USD plus $20 per lot · Plat Vacation application fee: 750 USD plus $20 per lot · Inspection fee: $5,000 or 3% of the cost of road and drainage improvements, whichever is greater USD (Any remaining fee amount will be refunded after inspection is completed.)

    “Subdivision Application Fees Preliminary Plat $500 plus $20/lot”
  • Permit processPartial

    New building plans and subdivision-related development in unincorporated Clay County.

    • No building permits are required in unincorporated areas according to the county notice.
    • If building plans include On-Site Sewage Facilities, the applicant must contact the identified county contact for permits.
    • Subdivision applications follow county subdivision regulations and may require complete applications, required fees, plat review, and approval by the Commissioners Court.
    “The statutory 30-day time frame for Plat approvals, established by Texas Local Government Code Chapter 232, shall commence upon receiving a complete application and required fees.”
  • Building permitNot required

    Texas counties have no general authority to require building permits or prior approval for new residential construction in unincorporated areas; the limited permissive building-code authority in LGC Chapter 233 does not grant prior-approval authority.

    Texas Local Government Code Chapter 233 (County Regulation) ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

  • Owner-builder exemptionConditional

    An owner installing an on-site sewage facility for a single-family dwelling in Texas, including Clay County, subject to local permitting-authority requirements.

    • The permitting authority must allow the arrangement under its local requirements.
    • The owner must own the single-family dwelling and the property.
    • No part of the property may be developed for sale or lease.
    • All permitting, construction, and maintenance requirements of the permitting authority must be met.
    • Some systems must be installed by a factory representative.
    • If another person assists with installation, that person generally must be a licensed installer, subject to the licensed-electrician and tank-delivery exceptions stated by TCEQ.
    “This depends on whether the permitting authority allows this in their local requirements. Otherwise yes, provided you have the knowledge, skills, and equipment to do so AND: the OSSF is for a single family dwelling that you own, you also own the property, no part of the property will be developed for sale or lease, all permitting, construction, and maintenance requirements of the permitting authority are met.”
    One more reviewed finding on this topic
    • Conditional — An owner acting as the general contractor for improving a new residential structure in Texas.
      “A homebuilder can be a contractor, a developer, or a home owner acting as a general contractor to improve a new residential structure.”
  • Building code adoptedPartial

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

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

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

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

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

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

    Construction, installation, alteration, extension, or repair of an on-site sewage facility, including septic systems and holding tanks, in Texas, including Clay County.

    • A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.
    • Local permitting programs may impose requirements more stringent than state minimums.
    • An OSSF may be exempt if it meets all other 30 TAC Chapter 285 planning, construction, and installation requirements and the 10-acre rule.
    • The 10-acre rule requires a TCEQ-licensed site evaluator or professional engineer site evaluation; service of a single-family dwelling on a tract of at least 10 acres; no nuisance or groundwater pollution; all OSSF parts at least 100 feet from the property line; on-property effluent disposal; and the single-family dwelling is the only dwelling on the tract.
    • Emergency repairs listed by TCEQ do not require a permit but must be reported in writing to the permitting authority within 72 hours after repairs begin.
    • OSSFs grandfathered as installed before a local authorized program or before September 1, 1989, whichever is earlier, may be exempt if they are not creating a nuisance, are not in need of repair, and have had no significant increase in use or other alteration.

    minimum tract size for 10-acre exemption: >= 10 acres (All other stated 10-acre-rule conditions must also be met.) · minimum setback of all OSSF parts under 10-acre exemption: >= 100 feet from property line · emergency-repair reporting deadline: <= 72 hours after repairs begin (Applies to listed emergency repairs that do not require a permit.)

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

    OSSF installation and, where applicable, maintenance inspections in Texas

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

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

    “Many times, the AA has a "designated representative" (DR) to assist them with their responsibilities, which include reviewing plans for constructing, altering, extending or repairing each OSSF; issuing permits; and inspecting system installation. [...] If the system uses an electronic monitor, automatic radio or telephone to notify the maintenance provider of system or component failure and to monitor the amount of disinfection in the system, reporting may be reduced to every six months.”
    One more reviewed finding on this topic
    • Limited — Construction inspections for permitted OSSFs in Texas, including Clay County, subject to the applicable permitting authority's requirements.
      “request the initial, final, and any other required inspection or inspections from the permitting authority;”
  • Off-grid sanitationLimited

    Off-grid domestic sewage treatment through an on-site sewage facility or septic system in Texas, including Clay County.

    • An OSSF may be used only under the applicable permitting and construction rules.
    • A permit is generally required before construction, installation, alteration, extension, or repair.
    • The 10-acre exemption is available only when all stated site-evaluation, dwelling, nuisance, setback, disposal, and occupancy conditions are satisfied.
    • Local permitting authorities may impose more stringent requirements.
    • Emergency repairs listed by TCEQ are exempt from permitting but must be reported in writing within 72 hours after repairs begin.

    10-acre exemption tract size: >= 10 acres (All other stated 10-acre-rule conditions must also be met.) · 10-acre exemption OSSF setback: >= 100 feet from property line

    “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”:”
  • Agricultural exemptionAvailable (with conditions)

    A tract outside municipal limits in Clay County that is divided into two or more parts, where the owner does not lay out a part of the tract intended for public use and the land is to be used primarily for agricultural use, farm, ranch, wildlife management, or timber production.

    • The county may not require a plat when both statutory conditions are met: no part described by Section 232.001(a)(3) is laid out, and the land is used primarily for the specified agricultural, farm, ranch, wildlife management, or timber production purposes.
    • Agricultural use is measured by the definitions referenced in Section 1-d, Article VIII, Texas Constitution, and Section 1-d-1, Article VIII, Texas Constitution.
    • If the tract ceases to be used primarily for the qualifying uses, the platting requirements apply.
    • This claim concerns the state subdivision-plat exemption and does not establish a separate Clay County property-tax agricultural appraisal exemption.
    “A county may not require the owner of a tract of land located outside the limits of a municipality who divides the tract into two or more parts to have a plat of the subdivision prepared if: (1) the owner does not lay out a part of the tract described by Section 232.001(a)(3); and (2) the land is to be used primarily for agricultural use, as defined by Section 1-d, Article VIII, Texas Constitution, or for farm, ranch, wildlife management, or timber production use within the meaning of Section 1-d-1, Article VIII, Texas Constitution.”
  • 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.

  • Inspections — County building inspections for construction in Clay County, Texas.
  • Certificate of occupancy — Certificates of occupancy or certificates of compliance for buildings in Clay County, Texas.
  • Well permit — Water-well drilling, completion, alteration, operation, or production in Clay County, Texas.
  • Mandatory utility hookup — Requirements to connect a residence or other development to public water or sewer service in Clay County, Texas.
  • Building in a floodplain — Development in flood hazard areas of unincorporated Clay County, Texas.
1 more unanswered
  • Short-term rentals

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 Clay County, Texas

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

Clay County scores 49/100 on the Bolthole Index, a solid county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: workable self-sufficiency basics (32.5″/yr rainfall) and about 55,236 people within a 30-minute drive.

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

Clay 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 Clay County OSSF program (TCEQ authorized agent) under Tex. Health & Safety Code Ch. 366 / 30 TAC 285. 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 Clay County?

Living in an RV on your own land in Clay County is allowed: Unincorporated Clay County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Clay County has no zoning ordinance. Clay 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 Clay County, Texas?

Land in Clay County runs about $2,259 per acre, based on the latest county data.

What is the water situation in Clay County?

Clay County gets about 32.5" of rain a year, with severe drought in roughly 29.6% of years.

How remote is Clay County?

A representative private-land location has about 55,236 people within a 30-minute drive and 3,354,137 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 Clay County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

How Clay compares in Texas

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