Dawson County, TX Building Permits, Zoning & Septic Rules

Unincorporated Dawson County, Texas does not require a building permit for a home, because the county's official site lists no building or permitting department¹. There is also no county zoning ordinance, so the county sets no rule on setbacks, minimum home size, or living in an RV or tiny home while you build²³. Septic systems are the permit that matters most here: TCEQ lists Dawson County itself as the authorized agent for the whole county, with day-to-day inspection and enforcement handled by the South Plains Public Health District's Lamesa Clinic⁴⁵.

At a glance

Building permit: Not required in unincorporated Dawson County¹
Zoning: No county zoning ordinance²
Septic permit: Required; Dawson County is the TCEQ authorized agent countywide⁴⁶
RV / tiny home living: Unrestricted by county zoning (no zoning authority)³
Owner-builder exemption: You can install your own OSSF if the permitting authority allows it⁷
10-acre septic exemption: Available for a single-family dwelling meeting all TCEQ conditions⁶
Driveway onto a state highway: Requires TxDOT Form 1058, max 24 ft wide⁸

Who to call

Septic permits

South Plains Public Health District – Lamesa Clinic (Environmental Services)

Environmental health services for Dawson County, including inspection of permitted OSSFs, septic-complaint investigation and OSSF rule enforcement

806-872-5863

503 S. 1st Street, Lamesa, TX 79331

Also useful

Dawson County Courthouse (Commissioners Court / County Judge)

County governance; the office to confirm floodplain administration, subdivision platting, and whether any building or fire code has been adopted

(806)-329-3313

400 S 1st Street, Lamesa, Texas 79331 (mailing: P.O. Box 1268, Lamesa, Texas 79331-1268)

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 Dawson County, Texas?

Dawson County's official website lists only elected offices and courthouse departments, no building or permitting department, and Texas counties generally cannot require structural building permits in unincorporated areas¹. Texas law does let some counties adopt fire-code or residential building-code standards, but only counties over 250,000 people (or adjacent to one) can adopt the fire code, and residential standards apply only where a county passes a resolution and sits within 50 miles of an international border or has a population over 100⁹. Whether Dawson County has adopted either was not confirmed on the county's official site, so if you plan to build, ask the Commissioners Court to be sure¹⁰.

Who handles septic and other permits in Dawson County, and how do you reach them?

There is no building department to call in Dawson County; the county's own site lists only elected offices like the County Judge, Commissioners Court, County Clerk and Sheriff¹. For septic, TCEQ's own authorized-agent lookup lists Dawson County as the authorized agent for the entire county, while day-to-day inspection, complaint investigation and enforcement of OSSF rules are carried out through the South Plains Public Health District's Lamesa Clinic at 806-872-5863⁴⁵. For anything not covered by that office, including floodplain administration and any building or fire code the county may have adopted, the Dawson County Courthouse at (806)-329-3313 is where to start¹⁰.

Does Dawson County have zoning?

Dawson County has no zoning ordinance for unincorporated land². Texas law only lets counties zone in a handful of narrowly defined situations, such as Padre Island in Cameron or Willacy County and a few named lakes and recreation areas, none of which include Dawson County¹¹. Because the county has no zoning authority here, it sets no minimum home size, no setbacks, no lot-coverage limit and no zoning districts, and it does not restrict accessory dwellings, RVs, tiny homes, manufactured homes or temporary camping on unincorporated land³. That is a statement about county zoning only: it does not remove the septic permit or state-highway driveway permit that still apply.

How do septic permits work in Dawson County?

Every on-site sewage facility (OSSF) in Texas needs a permit before it is built, altered, extended or repaired, and TCEQ's records show Dawson County itself is the local authority for the whole county¹²⁴. The South Plains Public Health District's Lamesa Clinic inspects properly permitted and installed OSSFs, investigates septic-system complaints, and enforces OSSF rules up to and including prosecution¹³. Soil conditions here are favorable for septic: about 84.2% of Dawson County's soils are free of severe limitations for a conventional drain field, among the best rates in this dataset, so a standard system is realistic on most parcels¹⁴. A 10-acre exemption from permitting exists only if a licensed site evaluator confirms the tract, effluent and setbacks all meet TCEQ's conditions, including keeping the OSSF at least 100 feet from every property line and limiting the tract to one single-family dwelling¹².

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

Dawson County's lack of zoning authority means the county itself does not restrict RV, manufactured-home or tiny-home occupancy on unincorporated land³. That does not exempt you from Texas's septic rules: any wastewater from an RV, tiny home or off-grid dwelling still needs a permitted OSSF or holding tank, and holding tanks and other off-grid sanitation remain subject to the same statewide OSSF permitting and construction standards¹⁵. Confirm with the South Plains Public Health District how your setup will be permitted before you move a camper or tiny home onto raw land⁵.

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

Confirm your parcel is in unincorporated Dawson County rather than inside Lamesa or another city, since municipal codes are separate from the county rules described here¹.
Know that no county building permit is required for the residence itself in unincorporated Dawson County¹.
Contact the South Plains Public Health District's Lamesa Clinic before you finalize a house site, since your septic layout will constrain where the house and driveway can sit⁵.
If you are installing your own OSSF as the owner, confirm the permitting authority allows owner installation, since Texas only permits this if the local program allows it and you meet the ownership and no-sale conditions¹⁶.
If your driveway will connect to a state highway, contact the local TxDOT district office and file Form 1058 before building it; the driveway cannot exceed 24 feet wide except for permitted radii⁸.
Check with the Dawson County Courthouse on floodplain rules and any adopted fire or building code before you start construction¹⁰.

What to check before you buy land in Dawson County

Septic siting is easier here than in much of rural Texas: about 84.2% of Dawson County's soils are free of severe limitations for a conventional drain field, and about 98.2% of the county's land sits at 15% slope or less, so buildable, septic-friendly ground is common¹⁴¹⁷. Water is the bigger question: the county has seen severe drought in about 35.6% of recent years, so plan carefully for a well or rural water supply¹⁸. Farmland here has recently averaged about $1,359 an acre and a typical home is valued around $111,724, both well below the state average¹⁹²⁰. Property taxes run about 1.7% of value, with a median bill near $1,567²¹²². Floodplain rules and any subdivision or platting requirements for unincorporated Dawson County were not confirmed on the county's official site, so ask the Dawson County Courthouse directly if your parcel is near a floodplain or you plan to split a tract¹⁰.

Watch-outs

Whether Dawson County has adopted a fire code or residential building-code resolution under state law was not confirmed on the county's official site; call the Commissioners Court before you assume no inspection will ever apply⁹.
Floodplain development rules for unincorporated Dawson County were not confirmable on the county's official site; ask the Dawson County Courthouse directly if your parcel is near a floodplain¹⁰.
Exactly which office issues the OSSF permit itself, versus which office inspects and enforces it, was not fully confirmable: TCEQ's own records list Dawson County as the authorized agent for the entire county, while the South Plains Public Health District's page describes inspection and enforcement rather than permit issuance; confirm the current process with that office before you apply⁴¹³.

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 Dawson County scores

Seclusion75100% ev.

Self-Sufficiency1396% ev.

Admin Boringness87100% ev.

Durability35100% 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 →

$112kTypical home

1.7%Property tax

$1,359Land / acre

17.2"Annual rain

35.6% of yrsSevere drought

42.9 / yr (+30)Mid-century 100°F days

35.4 daysMid-century dry spell

1.45" (+5.6%)Mid-century 1-day rain

1.23×Wildfire change factor

100%Forward climate coverage

$2,630Home insurance / yr

-1.3% / yrInsurance growth

0%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

8,876People within 30 min

813,738People within 2 hr

11,689Radius comparison (15 mi)

13.3People / sq mi

0%Federal land

98.2%Land at 15% slope or less

84.2%Septic soil without severe limits

484,023 acWorkable land screen

0.2%Wooded land

0.8 tonsBiomass / forest ac

62.7°FAvg temp

Answers from the rulebook for Dawson County

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

Dawson County rules

Zoning districts · by state lawNo county rule
Unincorporated Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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 Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us.
- 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
Septic inspectionLimited
Inspection and enforcement services for properly permitted and installed OSSFs in Dawson County served by the South Plains Public Health District.
- The source describes inspection of properly permitted and installed OSSFs, septic-system complaint investigation, and enforcement up to and including prosecution of violators.
- The source does not establish a universal inspection schedule or inspection requirement for every OSSF.
“Inspection of properly permitted and installed On-Site Sewage Facilities. Investigation of septic system complaints. Enforcement of On-Site Sewage Facility Rules up to and including prosecution of violators.”
Lamesa Clinic ↗Re-checked Sep 11, 2026
Building permitNot required
The county government site lists no building/permitting department; Texas counties lack general authority to require building permits in unincorporated areas.
Dawson County TX - Official Website ↗Scouted from the county site, not yet independently re-checked
County-wide zoningAbsent
No county zoning department or ordinance is published; Texas counties have no zoning authority over unincorporated land.
Dawson County TX - Official Website ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

Owner-builder exemptionAvailable (with conditions)
An owner installing an on-site sewage facility for a single-family dwelling in Dawson County or elsewhere in Texas
- The permitting authority must allow owner installation under its local requirements.
- The OSSF must be for a single-family dwelling that the owner owns.
- The owner must also own the property.
- No part of the property may be developed for sale or lease.
- The owner must have the knowledge, skills, and equipment to perform the work.
- All permitting, construction, and maintenance requirements of the permitting authority must be met.
- If another person assists with installation, that person must be a licensed installer, except for a licensed electrician installing electrical components or a person delivering and setting treatment or pump tanks into an excavation.
- Some systems may have to be installed by a factory representative.
“This depends on whether the permitting authority allows this in their local requirements. Otherwise yes”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 11, 2026
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
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
One more reviewed finding on this topic
- Required — Construction, installation, alteration, extension, or repair of an on-site sewage facility, including septic systems, in Dawson County under Texas state OSSF requirements.
  “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.”
  Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 11, 2026
Off-grid sanitationLimited
Off-grid sanitation through an OSSF or holding tank in Dawson County.
- OSSF construction, installation, alteration, extension, or repair generally requires a permit.
- The TCEQ 10-acre exemption requires all listed site-evaluation, single-family dwelling, nuisance, groundwater, property-line, on-site effluent-disposal, and single-dwelling conditions.
- Emergency repairs are exempt from permitting only when reported in writing within 72 hours after repairs begin.
- Grandfathered systems may be exempt under the conditions stated by TCEQ.
“Permits are required for on-site sewage facilities (OSSFs) including septic systems and holding tanks. A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 11, 2026
Agricultural exemptionAvailable (with conditions)
Texas agricultural sales-tax exemptions relevant to qualifying farm or ranch machinery, equipment, and specified agricultural production uses in Dawson County.
- The farm or ranch must use qualifying machinery or equipment exclusively in producing food for human consumption, grass, feed for animal life, or other agricultural products to be sold in the regular course of business.
- The exemption does not apply to improvements to realty or taxable services.
- A qualifying agricultural exemption certificate and ag/timber number may be required for otherwise taxable purchases.
qualifying use: exclusive use on a farm or ranch for specified agricultural production (Does not apply to improvements to realty or taxable services)
“Machinery and equipment exclusively used or employed on a farm or ranch in the building or maintaining of roads or water facilities or in producing food for human consumption, grass, feed for animal life or other agricultural products to be sold in the regular course of business qualifies for exemption. [...] The agricultural exemption does not apply to improvements to realty or taxable services.”
Agriculture and Timber Industries Frequently Asked Questions ↗Re-checked Sep 11, 2026
Driveway accessRequired
New or modified access driveways connecting property to a Texas state highway right of way.
- A local public agency may receive access driveway permitting authority for state highways, but TxDOT approval remains required for drainage impacts on the state highway system before local approval.
- No access driveway is permitted within a flared or widened right-of-way section at an intersection of a state highway with another highway, road, or street.
- All entrances and exits, including radii, must be confined within the permittee's property frontage.
- One-way 45-to-90-degree driveways are permitted for connections to one-way frontage roads or lane-divided highways; otherwise the driveway angle must be 75 to 90 degrees.
- ADAAG and Texas Accessibility Standards apply.
private residential driveway maximum width: <= 24 feet (Except as increased by permissible radii.) · driveway-to-pavement radius: >= 15 feet
“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
One more reviewed finding on this topic
- Required — Access driveways from property in Dawson County onto state highways.
  “The radius connecting the driveway to the highway pavement shall not be less than 15 feet.”
  General Access Driveway Policy ↗Re-checked Sep 11, 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
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.

Inspections — Building inspections in unincorporated Dawson County, Texas
Certificate of occupancy — Certificates of occupancy or equivalent certificates of compliance in unincorporated Dawson County, Texas
Local zoning — Local zoning rules within Dawson County, including incorporated municipalities and unincorporated areas.
Mandatory utility hookup — Whether a property in Dawson County must connect to public water, public sewer, both, or neither.
Subdividing land — Subdivision and platting of land in unincorporated Dawson 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 Dawson County, Texas

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

Dawson County scores 41/100 on the Bolthole Index, a marginal county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: thin water margin (17.2″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

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

Dawson 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 Dawson County (TCEQ authorized agent for on-site sewage). 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 Dawson County?

Living in an RV on your own land in Dawson County is allowed: Unincorporated Dawson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Dawson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.dawson.tx.us. 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 Dawson County, Texas?

Land in Dawson County runs about $1,359 per acre, based on the latest county data.

What is the water situation in Dawson County?

Dawson County gets about 17.2" of rain a year, with severe drought in roughly 35.6% of years.

How remote is Dawson County?

A representative private-land location has about 8,876 people within a 30-minute drive and 813,738 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.

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

At a glance

Who to call

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

Who handles septic and other permits in Dawson County, and how do you reach them?

Does Dawson County have zoning?

How do septic permits work in Dawson County?

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

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

What to check before you buy land in Dawson County

Watch-outs

Sources

Dawson County in Texas

How Dawson County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Dawson County

Dawson County rules

Texas rules that apply here

Still unanswered

Living off-grid in Dawson County, Texas

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

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

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

How much does land cost in Dawson County, Texas?

What is the water situation in Dawson County?

How remote is Dawson County?

How Dawson compares in Texas