Sterling County, TX Building Permits, Zoning & Septic Rules

Unincorporated Sterling County, Texas does not require a building permit for a home, and the county has no zoning ordinance, so there is no minimum home size, setback rule, or restriction on RVs, tiny homes, or manufactured homes¹²³. A septic system still needs a state OSSF permit, and because Sterling County has no local authorized agent, that permit comes from TCEQ's Region 8 office in San Angelo⁴⁵. Water wells are different: the district requires a Notice of Intent to Drill before drilling any well, exempt or not⁶.

At a glance

Building permit: Not required in unincorporated Sterling County¹
Zoning: No county zoning; Sterling County cannot zone under Texas law²
Septic permit: Required through TCEQ's regional office in San Angelo; a 10-acre exemption may apply⁴⁷
Water well permit: Every well needs a Notice of Intent to Drill filed with the Underground Water Conservation District first⁶
RV / tiny home / manufactured home: Unrestricted by county zoning (there is none)³
Minimum home size / setbacks: None set by the county (no zoning ordinance)³
Septic soils: Only about 6.5% of the county's soils are rated without severe limits for a conventional drain field⁸
Owner-builder exemption: Not published anywhere we could find; unconfirmed⁹

Who to call

Septic permits

TCEQ Region 8 (San Angelo) Office

OSSF (septic) permitting authority for Sterling County. TCEQ's own county lookup tool returns this office, not a city or county authorized agent, as Sterling County's permitting authority, matching Sterling County's own website, which names no building, planning, or septic office of its own.

325-655-9479

622 S Oakes, Ste K, San Angelo, TX 76903-7035

Online permits →

Well permits

Sterling County Underground Water Conservation District

Permits and registers water wells within Sterling County. District rules require a preregistration Notice of Intent to Drill for every new well, exempt or non-exempt, filed at least five business days before drilling begins.

325-378-2704

P.O. Box 873, Sterling City, TX 76951

Online permits →

Also useful

Sterling County Judge / Commissioners Court

Presides over Commissioners Court, the county's governing body; general point of contact for county roads and anything not covered by a named county office. Sterling County's own office list names no building, zoning, or planning department.

325-378-3481

Box 819, Sterling City, TX 76951

Contact details are copied from each office’s official page and were checked against it on September 24, 2026.

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

No: unincorporated Sterling County has no building or codes department, and its own website lists only elected offices like the County Judge, Commissioners Court, and Sheriff¹. Texas gives counties only narrow, specific building-permit powers, and the fire-code and residential-code options it does allow require a county population over 250,000 (or adjacent to one) for the fire code, or being within 50 miles of the international border or over a stated population for the optional residential code; Sterling County's population of about 1,397 falls well short of the fire-code threshold¹⁰¹¹. Even in a county that has adopted the optional residential-construction standards, an individual who builds their own home and intends to live in it as a primary residence may qualify for a conditional exception from certain penalty provisions, though Sterling County's adoption of that subchapter was not confirmed on any official source¹².

Who handles septic, wells, and other questions in Sterling County, and how do you reach them?

Sterling County has no building or zoning department, and its own office list names only the County Judge, Commissioners Court, County Attorney, County Clerk, County Treasurer, Tax Assessor/Collector, and Sheriff¹². For a septic permit, contact TCEQ's Region 8 office directly at 622 S Oakes, Ste K, San Angelo, TX 76903-7035, phone 325-655-9479⁵. For a water well, contact the Sterling County Underground Water Conservation District at P.O. Box 873, Sterling City, TX 76951, phone 325-378-2704¹³. For anything else county government handles, including roads, the County Judge's office at Box 819, Sterling City, TX 76951, phone 325-378-3481, is the place to start¹⁴.

Does Sterling County have zoning?

Sterling County has no zoning ordinance and, as a general-law county, cannot adopt one for unincorporated land². Texas gives counties zoning power only for a short list of specific places named in state law, like parts of Padre Island, the Amistad Recreation Area, and a few named lakes, and Sterling County is not one of them¹⁵. Because there is no county zoning ordinance, there is no minimum lot size, setback rule, height limit, or dwelling-size minimum, and RVs, tiny homes, manufactured homes, and accessory dwellings are unrestricted by county zoning³.

How do septic and water well permits work in Sterling County?

Any on-site sewage facility (OSSF) in Sterling County needs a state permit before you build it⁴⁷. Because Sterling County has no local authorized agent, TCEQ's Region 8 office in San Angelo is the permitting authority, confirmed by TCEQ's own county-lookup tool, which returns "Region 08 - San Angelo" as Sterling County's sole authorized agent⁵. If your tract is at least 10 acres, you may qualify for an exemption from the septic permit, but every condition has to be met: a licensed site evaluation, a single-family home as the only dwelling on the tract, no nuisance or groundwater pollution, every part of the system at least 100 feet from the property line, and effluent disposed of entirely on your own property⁷. Soils here are tough for a conventional system: only about 6.5% of Sterling County's land is rated without severe limits for a drain field, so get a site evaluation before you count on the cheapest option⁸. Water wells work differently from septic: the Sterling County Underground Water Conservation District requires a preregistration Notice of Intent to Drill, filed at least five business days before drilling, for every new well, whether it turns out to be exempt or not, and a non-exempt permit runs for a five-year term before renewal⁶.

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

Unincorporated Sterling County has no zoning ordinance, so there is no county rule against living in an RV, tiny home, or manufactured home on your own land³. That does not remove the septic requirement: whatever you live in, if it is not on a public sewer you still need a permitted OSSF, or you need to qualify for the 10-acre exemption, before you can legally use a toilet there⁷. A factory-built structure sold as "industrialized housing" (as opposed to an ordinary manufactured or mobile home) has to meet Texas's mandatory 2021-edition building codes regardless of county zoning¹⁶.

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

Confirm your OSSF plan with TCEQ Region 8 (622 S Oakes, Ste K, San Angelo, TX 76903-7035; 325-655-9479), or check whether your tract qualifies for the 10-acre exemption instead⁵⁷.
If you're drilling a well, file a Notice of Intent to Drill with the Sterling County Underground Water Conservation District (P.O. Box 873, Sterling City, TX 76951; 325-378-2704) at least five business days before drilling starts, whether or not you expect the well to be exempt¹³⁶.
If you don't qualify for the septic exemption, get a site evaluation; Sterling County's soils are rated without severe limits on only about 6.5% of the land, so this step matters⁸.
If your driveway will connect to a state highway, apply for a TxDOT access driveway permit on Form 1058 before you build it¹⁷¹⁸.
Build: unincorporated Sterling County has no county building permit or inspection requirement, so no county sign-off is needed to start construction on an ordinary site-built home¹.
If anything else comes up that isn't covered by a named county office, call the County Judge's office at 325-378-3481¹⁴.

What to check before you buy land in Sterling County

Septic: get a site evaluation before you buy, since only about 6.5% of the county's soils are rated without severe limits for a conventional drain field, and find out whether your tract is large enough (10 acres or more) to qualify for the state's septic-permit exemption⁸⁷. Water: any well, even one you expect to be exempt, needs a Notice of Intent to Drill filed with the Underground Water Conservation District at least five business days ahead⁶. Access: a driveway onto a state highway needs a TxDOT permit on Form 1058, and farm and ranch driveways are typically designed with a 25-foot return radius and a 20-foot throat width¹⁷¹⁸. Zoning: there is none in unincorporated Sterling County, and none is coming, since the county has no legal authority to adopt it²¹⁵. Climate: this is dry country, with about 20.1 inches of rain a year and severe drought in about 21.9% of years historically¹⁹²⁰. Taxes: Sterling County's effective property tax rate runs about 1.1%, with a median annual property tax bill around $1,535²¹²². The county is very sparsely populated, at about 1.5 people per square mile, with the nearest metro area roughly 63 miles away²³²⁴.

Watch-outs

Factory-built "industrialized housing," as distinct from an ordinary manufactured or mobile home, must meet Texas's mandatory building, energy, and electrical codes (2021-edition IBC/IRC with amendments) for construction starting on or after July 1, 2024, even though Sterling County itself has no building-permit requirement¹⁶.
We could not confirm whether Sterling County has any local rule on driveway access to county or local roads (as opposed to state highways, which do need a TxDOT permit); ask the County Judge's office before you build a new approach¹⁴.
We could not confirm building-inspection requirements, certificate-of-occupancy rules, or a short-term-rental ordinance for Sterling County; the county's own website does not publish any of these, so ask the County Judge's office directly rather than assume none exist¹⁴¹.

Sources

Written September 24, 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.

How Sterling County scores

Seclusion86100% ev.

Self-Sufficiency1396% ev.

Admin Boringness8790% ev.

Durability32100% ev.

Property Autonomy71100% ev.

Carry Cost7996% ev.

Evidence strength: 97%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$207kTypical home

1.1%Property tax

$1,186Land / acre

20.1"Annual rain

21.9% of yrsSevere drought

46.4 / yr (+32.7)Mid-century 100°F days

33.8 daysMid-century dry spell

1.55" (+7.2%)Mid-century 1-day rain

1.28×Wildfire change factor

100%Forward climate coverage

$2,478Home insurance / yr

-2.5% / yrInsurance growth

0%Nonrenewal rate

single ZIP shrunk to state medianInsurance basis

231,104People within 2 hr

972Radius comparison (15 mi)

1.5People / sq mi

0%Federal land

98.2%Land at 15% slope or less

6.5%Septic soil without severe limits

38,558 acWorkable land screen

2.9%Wooded land

2.1 tonsBiomass / forest ac

64.4°FAvg temp

Answers from the rulebook for Sterling County

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

Sterling County rules

Zoning districts · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Minimum dwelling size · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Minimum lot size · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Setbacks · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Lot coverage · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Building height · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Living in an RV · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Camping on your land · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Tiny homes · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Manufactured homes · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Accessory dwellings · by state lawNo county rule
Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
- For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
“This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
Well permitLimited
Water wells within the jurisdiction of the Sterling County Underground Water Conservation District, including Sterling County locations subject to the district's rules.
- All proposed new well locations must be approved by the appropriate water conservation district before drilling.
- Drilling any well without first filing and receiving approval of the preregistration Notice of Intent to Drill is a violation of district rules.
- The district's 2026 application is specifically for a non-exempt well permit; exemptions are determined under district rules.
- A separate application is required for each well or renewal, and the permit term is five years.
- The application requires proposed use, location, acreage or lot size, nearby-well mapping, water-conservation and drought-contingency documentation, and other listed attachments.
- District approval or denial is subject to the district rules.
non-exempt permit term: 5 years (renewal required)
“(a) An administratively complete preregistration application (Notice of Intent to Drill), furnished by the District, shall be filed with the District at least five (5) business days prior to drilling of any new well, exempt or non-exempt.”
Notice of Intent to Drill ↗Re-checked Sep 21, 2026
Building permitNot required
Texas counties lack general statutory authority to require building permits in unincorporated areas, and Sterling County's official site lists no building or permitting department.
Sterling County, Texas - Official County Offices ↗Scouted from the county site, not yet independently re-checked
County-wide zoningAbsent
Texas counties have no general zoning authority in unincorporated areas, and Sterling County maintains no planning or zoning office.
Sterling County, Texas - Official County Offices ↗Scouted from the county site, not yet independently re-checked

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:”
Industrialized Housing and Buildings – Adoption of New Code Editions ↗Re-checked Sep 12, 2026
InspectionsLimited
New residential construction of a single-family house or duplex in an unincorporated area of a Texas county that has adopted a resolution or order applying the statutory subchapter and has a population of more than 100 or is within 50 miles of an international border.
- The county must have adopted a resolution or order requiring application of the subchapter.
- The standards apply only to new residential construction beginning after September 1, 2009.
- The subchapter excludes structures constructed under Occupations Code Chapter 1201 and modular homes constructed under Occupations Code Chapter 1202.
- If a municipality has adopted a building code in its extraterritorial jurisdiction, that municipal code controls and the state-law standards have no effect there.
- For a vacant-lot single-family house or duplex, a minimum of three inspections applies: foundation before concrete placement, framing and mechanical systems before drywall or other interior wall covering, and completion.
- For an addition to an existing single-family house or duplex that increases square footage or value by more than 50 percent, inspections are performed as necessary based on the project's scope.
- The builder must contract for inspections with an authorized professional listed in Section 233.154(a)(3), including a licensed engineer, registered architect, TREC-licensed professional inspector, qualifying plumbing inspector, building inspector employed by a political subdivision, or ICC-certified residential combination inspector.
- The builder may use the same inspector for all inspections or a different inspector for each inspection.
- If required by the county, preconstruction and post-final-inspection notices must be submitted in the county-prescribed form; the post-final-inspection notice is due no later than the 10th day after the final inspection.
minimum inspections for vacant-lot new residential construction: >= 3 inspections (As applicable; additions are inspected as necessary based on project scope.) · post-final-inspection notice deadline: <= 10 days (Applies only if required by the county.)
“This subchapter applies only to a county that has adopted a resolution or order [...] shall have the construction inspected to ensure building code compliance”
Local Government Code Chapter 233: County Regulation of Housing and Other Structures ↗Re-checked Sep 21, 2026
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.”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 12, 2026
Septic permitRequired
Construction, installation, alteration, extension, or repair of an OSSF in Texas
- A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.
- A 10-acre exemption may apply only if all listed conditions are met: site evaluation by a TCEQ-licensed site evaluator or professional engineer; single-family dwelling on at least 10 acres; no nuisance or groundwater pollution; all OSSF parts at least 100 feet from the property line; effluent disposed of on the property; 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.
- Grandfathered systems may also be exempt if the stated conditions are met.
minimum tract size for 10-acre exemption: >= 10 acres (single-family dwelling and all other TCEQ conditions must be met) · minimum OSSF distance from property line for 10-acre exemption: >= 100 feet (all parts of the OSSF) · emergency repair reporting deadline: <= 72 hours (after repairs have begun; written report to permitting authority)
“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”:”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 12, 2026
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.”
Basics for Septic Systems ↗Re-checked Sep 12, 2026
Driveway accessRequired
New or modified access driveways connecting property to a state highway in Sterling County, Texas.
- A fully executed driveway permit is required before construction in the state highway right of way.
- The applicant must give TxDOT 24-hour notification before construction.
- The rule concerns state highway right of way and does not establish requirements for county-road or private-road access.
- One-way 45-to-90-degree driveways are permitted only for connections to one-way frontage roads or lane-divided highways.
- Private residential driveways may not exceed 24 feet measured at right angles to the centerline, except as increased by permissible radii; the connecting radius may not be less than 15 feet.
- Farm/ranch driveway guidance calls for a 25-foot return radius and 20-foot throat width.
- Drainage structures and drainage impacts require TxDOT approval, and applicable ADAAG and Texas Accessibility Standards requirements apply.
private residential driveway maximum width: <= 24 feet (except as increased by permissible radii) · minimum connecting radius: >= 15 feet · farm/ranch return radius: 25 feet (typical design) · farm/ranch throat width: 20 feet (typical design) · driveway angle: 75 to 90 degrees (one-way 45 to 90 degree angle driveways are permitted for one-way frontage roads or lane divided highways)
“A driveway must be constructed in accordance with a fully executed driveway permit”
Section 4: Driveway Permits, Design, and Materials ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Required — New or modified access driveways connecting property to a Texas state highway right of way.
  “A driveway must be constructed in accordance with a fully executed driveway permit”
  Section 4: Driveway Permits, Design, and Materials ↗Re-checked Sep 12, 2026
Permit processPublished (with conditions)
Constructing a new driveway or revising an existing driveway on the right of way of a Texas state highway.
- The applicant should contact the local District TxDOT office.
- The applicant must submit Form 1058, Permit to Construct Access Driveway Facilities on Highway Right of Way.
- The application must be for the bona fide purpose of securing or changing access to the owner's property, not parking or servicing vehicles on state highway rights of way.
- No construction may begin on the right of way until a fully executed driveway permit is received and the applicant gives TxDOT 24-hour notification.
- The driveway must comply with the executed permit and applicable regulations; TxDOT inspection must find construction satisfactory.
- Where a local public agency has permitting authority, drainage impacts on the state highway system still require TxDOT approval before local approval.
- Driveway geometrics, utilities, environmental requirements, wetlands considerations, ADAAG, TAS, and other applicable state and federal laws must be considered.
required form: Form 1058, Permit to Construct Access Driveway Facilities on Highway Right of Way · advance notification: 24 hours (Notification to TxDOT is required before construction on the right of way.) · private residential driveway maximum width: <= 24 feet (Except as increased by permissible radii.) · minimum driveway radius to highway pavement: >= 15 feet
“The applicant shall complete and submit to TxDOT a Form 1058”
Section 4: Driveway Permits, Design, and Materials ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Partial — Access driveway permits for property connections to state highways in Sterling County, Texas.
  “The applicant shall complete and submit to TxDOT a Form 1058,”
  Section 4: Driveway Permits, Design, and Materials ↗Re-checked Sep 21, 2026
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.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
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.”
Local Government Code Chapter 233, County Regulation of Housing and Other Structures ↗Re-checked Sep 21, 2026

Still unanswered

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

Owner-builder exemption — Owner-builders constructing or substantially improving residences in Sterling County.
Certificate of occupancy — Certificates of occupancy or equivalent occupancy approvals in Sterling County.
Local zoning — Local zoning within Sterling County, including Sterling City and any unincorporated areas; no countywide aggregate conclusion is established.
Mandatory utility hookup — Water and sewer connection requirements for property in Sterling County, Texas.
Agricultural exemption — Agricultural exemptions from dwelling, lot, setback, lot-coverage, height, subdivision, or related land-use controls in unincorporated Sterling County, Texas.

3 more unanswered

Building in a floodplain
Short-term rentals
Permit fees

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 Sterling County, Texas

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

Sterling County scores 41/100 on the Bolthole Index, a marginal county profile. Its strengths: low administrative friction for a quiet rural property and deep seclusion — about 972 people within 15 miles. Watch-outs: thin water margin (20.1″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

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

Sterling 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 TCEQ Region 8 (San Angelo) - On-Site Sewage Facilities Program. 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 Sterling County?

Living in an RV on your own land in Sterling County is allowed: Unincorporated Sterling County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Sterling County has no zoning ordinance. The county legal census found no county zoning ordinance, citing sterlingcotx.gov. Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits. Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Sterling County, Texas?

Land in Sterling County runs about $1,186 per acre, based on the latest county data.

What is the water situation in Sterling County?

Sterling County gets about 20.1" of rain a year, with severe drought in roughly 21.9% of years.

How remote is Sterling County?

A typical private-land location has about 972 people within 15 miles and 607,569 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

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

At a glance

Who to call

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

Who handles septic, wells, and other questions in Sterling County, and how do you reach them?

Does Sterling County have zoning?

How do septic and water well permits work in Sterling County?

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

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

What to check before you buy land in Sterling County

Watch-outs

Sources

Sterling County in Texas

How Sterling County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Sterling County

Sterling County rules

Texas rules that apply here

Still unanswered

Living off-grid in Sterling County, Texas

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

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

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

How much does land cost in Sterling County, Texas?

What is the water situation in Sterling County?

How remote is Sterling County?

How Sterling compares in Texas