Comanche County, TX Building Permits, Zoning & Septic

Q: Does Comanche County have zoning?

Comanche County has no countywide zoning ordinance. Texas gives counties general zoning power only in narrowly defined situations, such as parts of Padre Island in Cameron or Willacy County, and Comanche County is not one of the counties covered. That leaves unincorporated Comanche County with no minimum lot size, setback, lot-coverage, building-height or minimum-dwelling-size rule, and no zoning restriction on an accessory dwelling, RV, tiny home or installed manufactured home. The county's subdivision regulations apply outside incorporated city limits and outside any incorporated city's extraterritorial jurisdiction, and where a city's zoning does reach the same land, the rules are meant to be harmonized, with the most restrictive provision controlling in a conflict. Filing a plat outside city limits still costs money: $1,000 for a final plat with roads and up to 10 lots, $50 for each additional lot, $300 for a plat revision, and $200 to cancel a plat.

Unincorporated Comanche County, Texas has no county building permit and no county zoning ordinance¹². The county does regulate subdivisions: dividing land outside city limits needs a plat approved by the Commissioners Court, or an approved exception, filed with the County Clerk³. Septic systems need a state OSSF permit, and Comanche County itself is TCEQ's authorized agent for the entire county, with the permit program administered through the County Judge's Office⁴.

At a glance

Building permit: Not required in unincorporated areas; the county has no building department¹
Zoning: No county zoning ordinance; county subdivision rules apply instead outside city limits and city ETJs²⁵
Septic: State OSSF permit required; Comanche County is TCEQ's authorized agent, administered by the County Judge's Office⁴
Owner-installed septic: Allowed for a single-family home you own and live on, if the local permitting authority allows it⁶⁷
Subdivision: A plat or exception must be approved by the Commissioners Court before dividing land outside city limits³
RV / tiny home: No county zoning rule outside city limits⁸
Floodplain: Habitable structures are barred from the flood plan in county-regulated subdivisions⁹
Water wells (Middle Trinity area): Must be registered with the Middle Trinity Groundwater Conservation District before drilling¹⁰

Who to call

Also useful

Comanche County Commissioners Court

Approves preliminary subdivision plats and written approval for driveway drain-pipe installations in county-regulated subdivisions in unincorporated Comanche County; presided over by the County Judge

(325) 356-2466

101 W Central Avenue, Comanche, TX 76442

Also useful

Comanche County Clerk

Files subdivision plats and collects subdivision filing fees for unincorporated Comanche County

(325) 356-2655

Septic permits

Comanche County Judge's Office (OSSF Authorized Agent)

TCEQ's designated OSSF (septic) permitting authority for the entire county; the permit program is administered through the County Judge's Office

325-356-2466

204 E Oak Ave, Comanche, TX 76442

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 Comanche County, Texas?

Unincorporated Comanche County has no general building-permit program: the county's department listing shows no building or permit office, consistent with the general rule that Texas counties lack authority to require one in unincorporated areas¹. What the county does require is narrower and specific: a subdivision plat, or an approved exception, before you divide land outside city limits, a state septic permit before you install an OSSF, and written county approval before you install a driveway drain pipe³¹¹. None of this reaches property inside an incorporated city or that city's extraterritorial jurisdiction, where city zoning and building rules can apply instead and control in case of conflict⁵. A manufactured home cannot be occupied anywhere in Texas, including Comanche County, until it is installed; an uninstalled home may only be viewed on a retailer's sales lot¹².

Who handles permits in Comanche County, and how do you reach them?

Comanche County has no building or zoning department to call. For subdividing land outside city limits, the Commissioners Court approves the preliminary plat and the County Clerk files it and collects the fee; reach the Commissioners Court at the Comanche County Courthouse, 101 W Central Avenue, Comanche, TX 76442, (325) 356-2466, and the County Clerk at (325) 356-2655¹³¹⁴. Driveway drain-pipe installation in a county-regulated subdivision needs written approval from the County Precinct Commissioner in that same courthouse before you install it¹¹¹³. For a septic (OSSF) permit, Comanche County is TCEQ's own authorized agent for the whole county, and the County Judge's Office at 204 E Oak Ave in Comanche, (325) 356-2466, administers that program¹⁵⁴.

Does Comanche County have zoning?

Comanche County has no countywide zoning ordinance². Texas gives counties general zoning power only in narrowly defined situations, such as parts of Padre Island in Cameron or Willacy County, and Comanche County is not one of the counties covered¹⁶. That leaves unincorporated Comanche County with no minimum lot size, setback, lot-coverage, building-height or minimum-dwelling-size rule, and no zoning restriction on an accessory dwelling, RV, tiny home or installed manufactured home⁸. The county's subdivision regulations apply outside incorporated city limits and outside any incorporated city's extraterritorial jurisdiction, and where a city's zoning does reach the same land, the rules are meant to be harmonized, with the most restrictive provision controlling in a conflict⁵. Filing a plat outside city limits still costs money: $1,000 for a final plat with roads and up to 10 lots, $50 for each additional lot, $300 for a plat revision, and $200 to cancel a plat¹⁷.

How do septic permits work in Comanche County?

Septic systems (OSSFs) in Texas need a permit before construction, installation, alteration, extension or repair¹⁸. Comanche County itself is TCEQ's authorized agent for the entire county, with the permit program run through the County Judge's Office⁴¹⁵. Texas's 10-acre rule can exempt a single-family home from OSSF permitting if the tract is at least 10 acres, the home is the only dwelling on it, every part of the system sits at least 100 feet from the property line, and a licensed evaluator confirms the rest¹⁸. Soil here is a real constraint either way: fewer than 14% of Comanche County's soils carry no severe limitation for a conventional drain field¹⁹. If your permitting authority allows it, you can install your own OSSF for a single-family home you own, on property you own, with no part of it developed for sale or lease⁷. A system using secondary treatment or drip irrigation needs inspection by a maintenance company every four months unless the homeowner is allowed to maintain it²⁰.

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

Outside city limits, no county zoning ordinance restricts RV, travel-trailer or tiny-home occupancy on unincorporated Comanche County land⁸. A manufactured home is a different case under state law: it cannot be occupied anywhere in Texas until it is installed, and an uninstalled home may only be viewed on a retailer's sales lot, not lived in¹². If the site is in a county-regulated subdivision, no habitable structure may be built in the mapped flood plan, so a floodplain lot is a poor fit for a permanent RV or tiny home setup there⁹. None of this reaches property inside an incorporated city, where zoning can restrict RV or tiny-home occupancy directly⁵.

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

Confirm the parcel sits outside an incorporated city's limits and ETJ; unincorporated Comanche County has no zoning or general building permit²¹.
If you are creating a new lot rather than building on an existing one, file a plat or an exception with the Commissioners Court and County Clerk before construction begins³¹³.
If you plan a well, check whether the parcel is in the Middle Trinity Groundwater Conservation District; existing and new wells there must be registered with the District before drilling¹⁰.
Contact the County Judge's Office, Comanche County's OSSF permitting authority, before you site the house¹⁵.
Get a site evaluation for your septic system; soil results decide whether a conventional or aerobic system is allowed, and fewer than 14% of the county's soils are free of severe limitations for a conventional field¹⁹.
If your driveway crosses a county road drainage structure, get written approval from the County Precinct Commissioner before installing the drain pipe¹¹¹³.
If your driveway connects to a state highway instead, apply to TxDOT for a Form 1058 driveway permit and give 24 hours' notice before construction starts in the right-of-way²¹.

What to check before you buy land in Comanche County

Budget for a harder septic system than the county average suggests: fewer than 14% of Comanche County's soils carry no severe limitation for a conventional drain field, so an aerobic or alternative system is a realistic outcome on much of the county's land¹⁹. The county sits in a region that spends roughly 31% of years in severe drought and gets under 32 inches of rain annually, so confirm a well or rural water access before you commit²²²³. If a well is part of the plan, check whether the parcel falls inside the Middle Trinity Groundwater Conservation District, where every well, new or existing, must be registered before it is drilled, equipped or altered¹⁰. Almost all of the county's land sits at 15% slope or less, which is favorable for building and septic siting on most parcels, but a site-specific soil test still decides your system type²⁴. Comanche County's effective property tax rate runs about 1.5%, with a median annual bill near $2,082²⁵²⁶.

Watch-outs

Whether Comanche County requires a building inspection or a certificate of occupancy, or regulates short-term rentals outside city limits, was not confirmed on an official county page; ask the Commissioners Court before you plan around an assumption¹³.

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 Comanche County scores

Seclusion66100% ev.

Self-Sufficiency4296% ev.

Admin Boringness87100% ev.

Durability35100% ev.

Property Autonomy71100% ev.

Carry Cost77100% 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 →

$240kTypical home

1.5%Property tax

$3,754Land / acre

31.5"Annual rain

31.2% of yrsSevere drought

41.8 / yr (+27.5)Mid-century 100°F days

26.3 daysMid-century dry spell

2.01" (+4.8%)Mid-century 1-day rain

1.38×Wildfire change factor

100%Forward climate coverage

$2,247Home insurance / yr

-1.4% / yrInsurance growth

0%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

12,646People within 30 min

1,538,334People within 2 hr

9,843Radius comparison (15 mi)

15People / sq mi

1.5%Federal land

99.5%Land at 15% slope or less

13.8%Septic soil without severe limits

81,974 acWorkable land screen

15.6%Wooded land

11.3 tonsBiomass / forest ac

65.1°FAvg temp

Answers from the rulebook for Comanche County

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

Comanche County rules

Local zoningVaries (with conditions)
Local zoning within Comanche County, with county subdivision rules applying outside incorporated city limits and outside incorporated-city ETJs, while city zoning applies where concurrent jurisdiction exists.
- The county regulations apply to subdivisions whose plans, plats, or replats are filed on or after April 26, 2021.
- The regulations state that they apply outside the city limits of incorporated cities and outside the ETJ of any incorporated city within Comanche County.
- Where concurrent jurisdiction exists, the county rules must be harmonized with city zoning.
- If the county rules, state statutes, or homeowner-association rules conflict, the most restrictive applicable provision controls.
- This aggregate claim does not assert that Comanche County administers each municipal zoning ordinance.
“These rules are to be harmonized with city zoning where concurrent jurisdiction exists, but in the event of conflict, the most restrictive will control.”
Comanche County Subdivision Regulations ↗Re-checked Sep 11, 2026
Zoning districts · by state lawNo county rule
Unincorporated Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 Comanche County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Comanche County has no zoning ordinance. The county legal census found no county zoning ordinance, citing comanchecountytx.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 located within the Middle Trinity Groundwater Conservation District portion of Comanche County.
- All existing and new water wells must first be registered with the District.
- District staff determine whether the well is excluded or exempt from permitting under District Rule 5.4.
- If the well is not exempt, no person may drill, equip, complete, or substantially alter the well without first obtaining the appropriate District permit or amendment.
- The cited registration form identifies Comanche County as a county served by the District; the source does not establish that every parcel in Comanche County lies within the District boundary.
“All water wells, existing and new, must be registered with the District and are required to comply with the District’s registration requirements in these Rules. No person or entity shall drill, operate, modify, complete, change type or location of use, plug, abandon, or substantially alter the size of a well within the District without first registering the well with the District, even though the well may be exempt from the requirement to obtain a permit under District Rule 5.4.”
Middle Trinity Groundwater Conservation District Well Registration ↗Re-checked Sep 11, 2026
Driveway accessLimited
Driveway drainage crossings in subdivisions governed by Comanche County subdivision regulations.
- The owner or developer pays for placement of driveway drain pipes and drainage structures.
- Written approval of the County Precinct Commissioner is required before installation.
- The pipe must be inspected and approved by a County Commissioner before installation.
- The Commissioner may alter required size, length, and placement when necessary.
- Larger pipes are required when necessary to handle drainage based on a ten-year flow frequency.
- An easement is required from affected property owners when natural water flow is changed.
minimum driveway drain pipe diameter: >= 15 inches (Larger pipes may be required.) · minimum pipe length when ends are concreted: >= 22 feet (Placement, length, and diameter remain subject to inspection and approval.)
“Placement of driveway drain pipes and drain structures shall be made at the expense of the owner or developer upon receipt of a written approval of the County Precinct Commissioner prior to installation.”
Comanche County Subdivision Regulations ↗Re-checked Sep 11, 2026
Building in a floodplainLimited
Subdivision development and habitable structures in areas subject to the Comanche County subdivision regulations outside incorporated city limits and incorporated-city ETJs.
- An engineering 20-year flood drainage plan must be submitted with the preliminary plat unless waived by the Commissioners Court.
- The drainage plan must be prepared by a registered professional engineer qualified in storm runoff and drainage design.
- The cited regulation states that habitable structures may not be built in the flood plan.
- Road-grade exceptions may be granted by the Commissioners Court.
engineering flood drainage plan: 20 year flood plan (May be waived by the Commissioners Court.)
“An engineering 20-year flood drainage plan shall be submitted with the preliminary plat unless waived by the Commissioners Court.”
Comanche County Subdivision Regulations ↗Re-checked Sep 11, 2026
Permit feesPublished (with conditions)
Subdivision plat applications outside incorporated city limits and outside incorporated-city ETJs administered under Comanche County's subdivision regulations.
- Fees apply upon filing of the subdivision application with the Comanche County Clerk.
- The published schedule covers final plats with roads, plat revisions, and plat cancellations; other fees are not specified in the cited schedule.
final plat with roads, 10 lots or less: 1000 USD · additional lots over 10: per 50 USD per lot · plat revision: 300 USD · plat cancellation: 200 USD
“Subdivision Fees (Paid to the Comanche County Clerk upon filing of Application):”
Comanche County Subdivision Regulations ↗Re-checked Sep 11, 2026
Permit processPublished (with conditions)
Subdivision plat approval and related construction in Comanche County outside incorporated city limits and outside incorporated-city ETJs.
- Article III exemptions apply, including specified agricultural, family-transfer, acreage, veterans-land, and other statutory exemptions.
- The Commissioners Court or designee must approve the preliminary plat before construction begins.
- The ordinary decision period is 30 days and may be extended by 30 days if the stated conditions are met.
- The rules apply to subdivisions whose plans, plats, or replats are filed on or after April 26, 2021, and to construction or expansion commenced on or after adoption of the original infrastructure standards.
preliminary plat decision deadline: 30 days (May be extended by 30 days under the regulation's stated conditions.) · construction before approved preliminary plat: false (Construction of a proposed subdivision may not begin before approval.)
“Construction of any proposed subdivision may not begin before the Comanche County Commissioners Court approves the proposed Preliminary Plat.”
Comanche County Subdivision Regulations ↗Re-checked Sep 11, 2026
Building permitNot required
Comanche County's department listing shows no building/permit department; Texas counties generally lack authority to require building permits in unincorporated areas.
Comanche County TX - Departments ↗Scouted from the county site, not yet independently re-checked
County-wide zoningAbsent
No county zoning or planning department is listed; Texas counties generally cannot zone unincorporated land absent specific legislative authority.
Comanche County TX - Departments ↗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 Texas, including applicable property in Comanche County, where the local permitting authority allows owner installation.
- The local permitting authority must allow the 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.
- All permitting, construction, and maintenance requirements of the permitting authority must be met.
- If another person assists with any phase, that person generally must be a licensed installer, subject to the stated exceptions for a licensed electrician installing electrical components and a person delivering and setting a treatment or pump tank.
“This depends on whether the permitting authority allows this in their local requirements. Otherwise yes, provided you have the knowledge, skills, and equipment to do so AND: the OSSF is for a single family dwelling that you own, you also own the property, no part of the property will be developed for sale or lease, all permitting, construction, and maintenance requirements of the permitting authority are met.”
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
- Limited — OSSFs, including septic systems and holding tanks, in Comanche County subject to the applicable local permitting authority and any more stringent local 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
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
One more reviewed finding on this topic
- Limited — OSSFs using secondary treatment or drip irrigation in Comanche County.
  “A system using secondary treatment or drip irrigation must be inspected by a valid maintenance company once every four months, or be maintained by the single family homeowner, where allowed.”
  Advice for an Owner of an On-Site Sewage Facility (Septic System) ↗Re-checked Sep 11, 2026
Off-grid sanitationAllowed (with conditions)
Use of an on-site sewage facility, including a septic system or holding tank, as off-grid sanitation in Comanche County.
- A permit and approved plan are generally required to construct, alter, repair, extend, or operate an OSSF.
- The 10-acre exemption and emergency-repair exception apply only under the conditions stated on the TCEQ permitting page.
- Local permitting programs may impose more stringent requirements.
“Permits are required for on-site sewage facilities (OSSFs) including septic systems and holding tanks. This page offers guidance on selecting a system and installer. 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
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 for construction in Comanche County, including unincorporated areas.
Certificate of occupancy — Certificates of occupancy for buildings in Comanche County, including unincorporated areas.
Mandatory utility hookup — Water and sewer connection requirements for property in Comanche County.
Short-term rentals — Short-term rentals in Comanche County, Texas.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Comanche County, Texas

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

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

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

Comanche 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 Comanche 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 Comanche County?

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

Land in Comanche County runs about $3,754 per acre, based on the latest county data.

What is the water situation in Comanche County?

Comanche County gets about 31.5" of rain a year, with severe drought in roughly 31.2% of years.

How remote is Comanche County?

A representative private-land location has about 12,646 people within a 30-minute drive and 1,538,334 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 land rules in Comanche County, Texas

At a glance

Who to call

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

Who handles permits in Comanche County, and how do you reach them?

Does Comanche County have zoning?

How do septic permits work in Comanche County?

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

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

What to check before you buy land in Comanche County

Watch-outs

Sources

Comanche County in Texas

How Comanche County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Comanche County

Comanche County rules

Texas rules that apply here

Still unanswered

Living off-grid in Comanche County, Texas

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

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

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

How much does land cost in Comanche County, Texas?

What is the water situation in Comanche County?

How remote is Comanche County?

How Comanche compares in Texas