Bolthole Index

Austin County, Texas

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

54Index Score / 100
#122 of 254 in Texas

Unincorporated Austin County, Texas requires a development permit before building or placing a house, barn, or manufactured home1. County development permitting includes a residential final inspection, but does not establish a complete building-code inspection sequence2. Sealy has municipal zoning; septic applications go through Austin County Planning and Development, with separate OSSF authority in San Felipe345.

At a glance

Building permit
A county development permit is required before building or placing a house, barn, or manufactured home; no countywide building-code adoption confirmed1
Zoning
No county zoning in unincorporated areas; Sealy has municipal land-use standards63
Septic permit
Required through Austin County Planning and Development, with county inspection authority; San Felipe has separate authority785
Minimum lot size
1 net acre for OSSF-served lots using public water or an individual well9
Setbacks
Covered developments: 25 feet from the property line on non-thoroughfare roads, 50 feet on thoroughfares10
RV or tiny home on your own land
No county zoning restriction, but development and septic rules still apply; RV parks have separate limits6111213
Owner-builder exemption
State trade-license exemptions are limited; no county development-permit exemption confirmed14
Water wells
Domestic wells are exempt from an operating permit but must register with Bluebonnet GCD15

Who to call

Planning & zoning

Austin County Planning and Development Department

Commercial, land-division, pipeline, right-of-way, single-family development, and floodplain development permits for unincorporated Austin County

979-865-5911

DebR@austincounty.com

One East Main Street, Bellville, Texas 77418

Septic permits

Austin County Planning and Development Department

OSSF (septic) permits and minor construction applications for unincorporated Austin County

979-865-5911

planning1@austincounty.com

One East Main Street, Bellville, Texas 77418

Well permits

Bluebonnet Groundwater Conservation District

Water well registration and operating permits for Austin, Grimes, Waller, and Walker Counties

936-825-7303

1903 Dove Crossing, Suite A, Navasota, Texas 77868

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Austin County, TX?

Unincorporated Austin County requires a development permit before a house, barn, or manufactured home is built or moved onto property1. Residential projects must meet current platting and road-frontage requirements before permit documents are submitted, unless Commissioners Court approval is required11. The published residential development-permit fee is $100 outside a flood zone; flood-zone homes have a $200 base fee plus an enclosed-area surcharge, which Planning and Development should calculate16. The county conducts a residential final inspection; the assigned 911 address and permits must be posted to avoid a reinspection fee2. We could not confirm countywide building-code adoption or a residential certificate-of-occupancy requirement; ask Planning and Development what closeout applies. Bellville and Sealy have adopted municipal construction codes, which do not establish countywide code adoption1718.

Who handles Austin County development permits, and how do you reach them?

Austin County Planning and Development accepts commercial, land-division, pipeline, right-of-way, and single-family applications at DebR@austincounty.com; septic and minor construction applications go to planning1@austincounty.com1920. For county-administered development outside incorporated municipal jurisdiction, a pre-application meeting is required unless the County Engineer or designee waives it for a minor project or one with minimal infrastructure impact21. A compliant application goes to the next available Commissioners Court agenda for consideration, and approval requires an affirmative majority vote21. The county fee schedule controls over conflicting amounts in forms or regulations, and applicants pay outside engineering-review costs before plan or document approval16.

Does Austin County have zoning?

Unincorporated Austin County has no county zoning rule setting minimum dwelling size, lot coverage, building height, tiny-home occupancy, or temporary-camping limits6. County subdivision and development controls still apply; special-district developments must follow county regulations when no development agreement with a city exists22. OSSF-served lots using public water or an individual well generally need at least 1 net acre9. New buildings in covered subdivisions or developments require front setbacks from the property line of 25 feet on non-thoroughfare roads or 50 feet on thoroughfares, outside more specific municipal rules10. Inside Sealy, municipal land-use standards apply; septic permitting still requires an approved plan and coordination with the local OSSF authority, Austin County Planning and Development3234.

How do septic permits work in Austin County?

Austin County requires an OSSF construction and location permit for an individual septic system serving a residence or business7. Austin County Planning and Development is the local permitting authority; email planning1@austincounty.com to begin420. The published conventional OSSF fee for a single-family residence is $27516. A parcel may use an approved community sewage system or a properly designed and operational OSSF; a community connection is preferred where possible when it is less than 300 feet away24. The Town of San Felipe is a separate OSSF authority, so confirm its current filing contact5. Texas's 10-acre exemption applies only when every condition is met, including licensed evaluation and 100-foot separation from property lines; confirm local requirements with the OSSF authority before relying on it257. Only 4.9% of Austin County soils are rated “not limited” for a conventional septic drain field; plan for a site evaluation and possibly an engineered system, rather than assuming septic is impossible26.

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

For an RV or tiny home on private land in unincorporated Austin County, ask Planning and Development how the proposed setup fits the county development-permit requirement before placing a structure1. A manufactured-home application requires a recorded deed copy, assigned 911 address documentation, and the applicable fee27. Off-grid sewage disposal must use a properly designed, operational OSSF that satisfies county septic requirements12. County-regulated RV parks have different rules: permanent residence and permanent fixtures are barred on individual spaces13. RV parks, manufactured-home communities, and multi-tenant developments also need an approved Infrastructure Development Plan before site improvements begin; county infrastructure inspections and a Certificate of Compliance concern those developments, not a general home-occupancy approval28.

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

  1. Establish parcel jurisdiction: the unincorporated-county zoning answer does not cover Sealy municipal land-use standards or Bellville and Sealy construction codes631718.
  2. Check plat status before designing the site; land divisions outside municipalities generally require a plat unless an exemption is approved, and municipal or extraterritorial-jurisdiction procedures may apply29.
  3. Contact Planning and Development for the pre-application meeting and obtain the development permit before building or placing a house, barn, or manufactured home211.
  4. Apply for the OSSF permit through planning1@austincounty.com, or confirm the separate OSSF process with the Town of San Felipe if the parcel is there205.
  5. Obtain a floodplain permit in a flood hazard area and Bluebonnet Groundwater Conservation District authorization before drilling a domestic well3015.
  6. Post the permit during construction, then post the assigned 911 address and permits for the county's final inspection112.

What to check before you buy land in Austin County

Water: domestic wells in Austin County are exempt from a Bluebonnet Groundwater Conservation District operating permit but must register and require District authorization before drilling15. Flood: mapped flood-zone work requires an Austin County floodplain development permit30. Access: a new or reworked driveway onto a Texas state highway needs a TxDOT permit using Form 105831. Agricultural divisions: an exemption outside municipal limits requires Commissioners Court approval and a County Engineer Certificate of Plat Exemption, OSSF minimum lot sizes, and direct roadway access without easement access; platting requirements immediately apply if the qualifying agricultural use ends32. Taxes: the effective property tax rate is about 1.3%, with a median annual bill near $3,4643334.

Watch-outs

  • Texas exempts qualifying work on an owner's residence or homestead from certain electrical, plumbing, and air-conditioning trade licenses, but that is not a blanket exemption from Austin County permits14.
  • Austin County agricultural plat exemptions cover qualifying land divisions, not a blanket waiver of development permits for barns or homes321.
  • Austin County RV-park occupancy rules apply to regulated parks, not ordinary short-term home rentals; we could not confirm the latter rules, so ask Planning and Development before listing a home13.

Sources

  1. Guidelines for Obtaining Permits for Austin County, quoted and re-checked
  2. Guidelines for Obtaining Permits for Austin County, quoted and re-checked
  3. Sealy: Code of Ordinances, Chapter 58, Section 58-1 (Austin County), quoted and re-checked
  4. Austin County Permits (2026 county census)
  5. On-Site Sewage Facility (OSSF) Information, quoted and re-checked
  6. Texas law on county zoning and building authority
  7. Austin County Volume I Subdivision and Development Standards, quoted and re-checked
  8. Austin County Application for On-Site Sewage System Permit, quoted and re-checked
  9. Austin County Subdivision and Development Standards, Volume I, quoted and re-checked
  10. Austin County Subdivision and Development Standards, Volume I, quoted and re-checked
  11. Austin County – Volume I (Subdivision & Development Standards), quoted and re-checked
  12. Austin County Volume I Subdivision and Development Standards, quoted and re-checked
  13. Austin County – Volume I: Subdivision & Development Standards, quoted and re-checked
  14. Exemptions to Electrician Licensing (Texas statewide rule), quoted and re-checked
  15. Welcome to Austin County - Bluebonnet Groundwater Conservation District, quoted and re-checked
  16. Austin County Texas — Permits, quoted and re-checked
  17. Permits and Inspections, quoted and re-checked
  18. Building Code Ordinance, quoted and re-checked
  19. Austin County Planning and Development Department (austincounty.com)
  20. Austin County Planning and Development Department (austincounty.com)
  21. Austin County Permits, quoted and re-checked
  22. Austin County Subdivision and Development Regulations, Volume I, quoted and re-checked
  23. Sealy: Getting a Permit for an OSSF - Such as a Septic System (Austin County), quoted and re-checked
  24. Austin County Volume I Subdivision and Development Standards, quoted and re-checked
  25. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  26. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  27. Guidelines for Obtaining Permits in Austin County, quoted and re-checked
  28. Austin County – Volume I (Subdivision & Development Standards), Section IX, quoted and re-checked
  29. Austin County Subdivision and Development Standards, Volume I, quoted and re-checked
  30. Austin County Permits, quoted and re-checked
  31. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  32. Austin County Subdivision and Development Standards, Volume I, quoted and re-checked
  33. Effective property tax rate: Bolthole Index county data
  34. Median property tax bill: Bolthole Index county data

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Like all 6 of its neighbors, Austin County has no countywide zoning.

RuleAustin CountyWaller CountyColorado CountyWashington CountyFayette CountyWharton CountyFort Bend County
Building permitLimitedRequiredLimitedNot requiredLimitedLimitedLimited
County zoningNoNoNoNoNoNoNo
Septic permitsCounty Planning & DevelopmentCounty Env. Div.County Development & PermittingCounty Env. HealthCounty Health Dept.County Permit & Inspection Dept.County Env. Health Dept.

County locator

Austin County in Texas

54
County map
Austin County highlighted among the Texas counties · colored by Index score

How Austin County scores

Seclusion25100% ev.
Self-Sufficiency45100% ev.
Admin Boringness8490% ev.
Durability51100% ev.
Property Autonomy71100% ev.
Carry Cost63100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$430kTypical home
1.3%Property tax
$6,189Land / acre
45.5"Annual rain
19% of yrsSevere drought
43.1 / yr (+29.7)Mid-century 100°F days
19.9 daysMid-century dry spell
2.57" (+5.3%)Mid-century 1-day rain
1.43×Wildfire change factor
100%Forward climate coverage
$2,463Home insurance / yr
1.6% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
23,882People within 30 min
10,390,487People within 2 hr
33,358Radius comparison (15 mi)
49People / sq mi
0.3%Federal land
100%Land at 15% slope or less
4.9%Soils rated "not limited" for septic (strict USDA rating)
18,336 acWorkable land screen
18.6%Wooded land
21.3 tonsBiomass / forest ac
69.3°FAvg temp

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Cities and towns in Austin County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Brazos Country · Industry · Town of San Felipe · South Frydek · Wallis

Answers from the rulebook for Austin County

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

Austin County rules

  • Building permitLimited

    County-administered residential, commercial, industrial, and other nonresidential development permitting addressed by Austin County Volume I regulations and the county fee schedule.

    • Residential projects must meet current platting and road frontage requirements before submitting the applicable permit documentation, unless Commissioners’ Court approval is required.
    • After approval, permits must be placed in an area visible from the road throughout construction.
    • Non-single-family, commercial, industrial, and nonresidential uses require approval from the County Engineer and Permit Department before construction starts.
    • The cited provisions do not state that this requirement is limited to property outside municipal limits.
    • The fee schedule distinguishes flood-zone and non-flood-zone projects and includes separate residential and non-residential/commercial permit categories.
    • The fee schedule was adopted by the Austin County Commissioners Court on 7/28/2025.

    residential non-flood-zone permit fee: 100 USD (Residential category in the fee schedule.) · residential flood-zone permit fee: 200 USD (Plus (.05) cents per square foot of enclosed area for home and garage only.) · commercial/non-residential project threshold: < $1M ($1,000 permit fee plus $200 inspection fee; flood-zone projects also include (.10) cents per square foot of enclosed area.)

    “The development permit shall be placed in an area visible from the road during construction.”
    One more reviewed finding on this topic
    • Limited — Construction or placement of a house, barn, or manufactured home on property in Austin County, including residential development covered by the County's development-permit process.
      “MUST BE OBTAINED BEFORE ANYTHING IS [...] CONSTRUCTED ON PROPERTY”
  • InspectionsLimited

    Infrastructure and site improvements for manufactured/mobile home communities, recreational vehicle parks, and multi-tenant developments governed by Austin County Volume I, Section IX.

    • Construction or installation of paving, utilities, drainage, or other site improvements may not begin before Austin County approves the Infrastructure Development Plan.
    • Periodic inspections of improvements and site conditions may be required at the direction of the County Engineer or Austin County Permitting.
    • After written confirmation from the developer, Austin County performs a final inspection stating that the infrastructure is complete.
    • The cited Section IX inspection provision does not state that its geographic scope is limited to property outside municipal limits.
    • A Certificate of Compliance is issued no later than the fifth business day after written confirmation that the infrastructure is complete and compliant with the Infrastructure Development Plan, if the inspector determines compliance.

    Certificate of Compliance deadline: <= 5 business days (Measured after Austin County receives the owner's written confirmation that infrastructure is complete and compliant with the Infrastructure Development Plan.)

    “After written confirmation from the developer, the County shall perform a final inspection of the improvements stating that the infrastructure is complete.”
    One more reviewed finding on this topic
    • Limited — County final inspection associated with Austin County development permits for construction or placement of residential structures.
      “911 Address and Permits must be Posted when we come out to do a Final Inspection.”
  • Local zoningVaries (with conditions)

    Aggregate local-zoning conditions across Austin County, including municipal zoning inside incorporated places and county subdivision/development controls in unincorporated and special-district areas.

    • The City of Bellville maintains zoning-related applications, including conditional-use, zoning-change, and variance applications.
    • Austin County's current regulations govern subdivision and development standards and special districts; they do not, in the cited passages, establish a countywide zoning ordinance.
    • Municipal zoning applies within the relevant municipality and should not be treated as a county-administered rule in unincorporated areas.
    • Special-district developments must continue to comply with Austin County Subdivision and Development Regulations when no development agreement with a city exists.
    “Every development located within a special district shall continue to comply with all the regulations found in Volumes I, II, and III of the Austin County Subdivision and Development Regulations if there is no development agreement with a city.”
  • Zoning districts · by state lawNo county rule

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    Property intended for development in Austin County when served by an approved or licensed public water supply and an on-site sewage facility, or by an individual water-supply well and individual OSSF.

    • Lots or developments not utilizing OSSF and using an approved alternative or licensed sewer connection are governed by Section V.
    • An OSSF-served lot must also meet the County’s public-road frontage and dimensional requirements.

    minimum lot size: >= 1 net acre (Applies to approved/licensed public water supply with OSSF, or individual water supply well with individual OSSF.) · minimum paved public street frontage: >= 150 feet (For lots served by OSSF; cul-de-sac lots have a 50-foot chord-length exception.) · minimum lot length before narrowing: >= 150 feet (For lots served by OSSF; minimum narrowest width is 30 feet.)

    “one (1) Net acre.”
  • SetbacksSpecified

    New buildings on lots in Austin County subdivisions or developments outside any more specific municipal rule, based on the road classification.

    • Lots abutting an internal road or a road not classified as a thoroughfare require 25 feet from the property line.
    • Lots abutting a road classified as a thoroughfare require 50 feet from the property line.
    • The County Engineer determines discrepancies; appeals may be forwarded to Commissioners’ Court.

    front setback for non-thoroughfare road: >= 25 feet (Measured from the property line.) · front setback for thoroughfare road: >= 50 feet (Measured from the property line.) · side and rear utility easement: >= 10 feet (Along each lot where utility easements are required.)

    “twenty-five (25) feet [...] fifty (50) feet”
  • Lot coverage · by state lawNo county rule

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    RV occupancy in an Austin County-regulated recreational vehicle park; permanent residence on an individual RV-park space is not allowed.

    • The proposed RV park must have an Infrastructure Development Plan and/or complete civil plans for applications submitted after January 1, 2018.
    • Required state or federal permits must be approved before submission of the Infrastructure Development Plan or civil plans.
    • The development must be directly adjacent to a public paved street with a minimum 70-foot right-of-way and have at least 150 feet of road frontage.
    • Each RV-park space may contain no more than one residential unit.
    • No permanent fixtures or permanent residence are allowed on individual spaces, subject to the listed exception for common community or amenity facilities outside individual spaces.

    public street right-of-way width: >= 70 feet · road frontage: >= 150 feet · residential units per RV-park space: <= 1 unit · application date threshold for IDP/civil plans: >= 2018-01-01

    “No permanent fixtures [...] or permanent residence shall be allowed on the individual spaces.”
  • Camping on your land · by state lawNo county rule

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

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

    Placement of a manufactured home on property in Austin County.

    • A Development Application must be completed for placing a manufactured home on property.
    • A development permit must be obtained before anything is moved onto or constructed on the property.
    • If the property is in a flood hazard area, an elevation certificate from a certified surveyor is required before the development permit will be issued.
    • A recorded deed copy, assigned 911 address documentation, and the applicable development-permit fee are required.
    “A Development Application must be filled out completely [...] placing a manufactured home on property.”
  • Accessory dwellings · by state lawNo county rule

    Unincorporated Austin County: no county rule sets this, because Austin County has adopted no county zoning ordinance (Texas law lets some counties zone, but this one has not). The county legal census found no county zoning ordinance, citing austincounty.com.

    • 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.”
  • Septic permitRequired

    Construction and location of an individual on-site sewage facility on a lot in Austin County, including residential and business parcels.

    • Every parcel with a residence or business must provide sewage disposal upon occupancy through an approved community sewage system or a properly designed and operational individual OSSF.
    • The county standard states that an OSSF construction and location permit is required.
    • State minimums may include limited exemptions, including the Texas 10-acre rule, but local permitting authority requirements must also be satisfied.

    community-sewer preference distance: < 300 feet (Connection to a community sewage disposal facility is preferred where possible if the site is less than 300 feet from that connection.)

    “a permit for the construction and location on a lot is required in the interest of public health and welfare”
  • Septic inspectionLimited

    Inspection of OSSF facilities covered by an Austin County OSSF permit application.

    • The county application authorizes Austin County to enter the described property for inspection for any reason consistent with the Texas Health and Safety Code.
    • The source establishes inspection authority but does not state that a routine inspection is required for every system.
    “AUTHORIZATION IS HEREBY GIVEN TO AUSTIN COUNTY TO ENTER UPON THE ABOVE DESCRIBED PROPERTY FOR THE PURPOSE OF INSPECTING OSSF FACILITIES”
  • Off-grid sanitationLimited

    Off-grid sanitation understood as individual onsite sewage disposal for a residence or business in Austin County.

    • An individual OSSF is an allowed alternative to connection to an approved community sewage system.
    • The individual OSSF must be properly designed and operational, meet the latest-approved Austin County Septic Order, and satisfy applicable permit requirements.
    • The rule does not establish permission for unregulated disposal methods outside an approved community system or OSSF.
    “Construction of a properly designed and operational individual on-site sewage facility meeting the latest-approved Austin County Septic Order.”
  • Well permitLimited

    Water wells in Austin County within the Bluebonnet Groundwater Conservation District, which covers the entire land area of Austin, Grimes, Waller, and Walker Counties.

    • Domestic or agricultural wells on private property are classified as exempt and do not need an operating permit.
    • Exempt wells must nevertheless be registered with the District and require District authorization before drilling, modifying, capping, plugging, or other well-related activities.
    • A $100 well-log deposit is required before authorization for drilling a new well or re-boring an existing well, refundable if required documents and the driller's log are filed within 60 days after completion.
    • Non-exempt wells may be subject to operating-permit requirements under District rules.

    well-log deposit: 100 USD (Returned if all documents, including a copy of the driller's log, are filed with the District within 60 days of completion.) · document filing deadline: 60 days (Applies to return of the well-log deposit after completion of a new or re-bored well.)

    “Rule 8.3 of the BGCD Rules allows certain wells to be operated, after being registered, without an operating permit from the District.”
  • Mandatory utility hookupConditional

    Sewage disposal and connection options for parcels with a residence or business under Austin County subdivision and development standards.

    • A parcel may use an approved community sewage disposal system or a properly designed and operational individual OSSF.
    • Connection to a community sewage disposal facility is preferred, where possible, when the site is less than 300 feet from that connection; the cited rule does not state an unconditional countywide sewer-connection mandate.
    • Existing public sanitary sewer connections require evidence of prior approval and sufficient capacity.

    community sewage connection preference distance: < 300 feet (The text says connection is preferred where possible, not universally mandatory.)

    “Connection to an approved community sewage disposal system; or, (ii) Construction of a properly designed and operational individual on-site sewage facility”
  • Agricultural exemptionConditional

    Subdivision divisions in Austin County outside municipal limits where the land is used primarily for agricultural use, or for farm, ranch, wildlife management, or timber production use, and the division does not lay out a part of the tract described by Texas Local Government Code § 232.001(a)(3).

    • The Austin County Commissioners Court must determine that an applicable statutory exemption is met and that allowing the exemption is in the best interest of the County.
    • The division must still meet the minimum lot-size requirements in the Austin County On-Site Sewage Facility Order.
    • Direct roadway access is required; no easement access is allowed.
    • If the tract ceases to be used primarily for agricultural, farm, ranch, wildlife-management, or timber-production use, platting requirements immediately apply.
    • A Certificate of Plat Exemption must be issued by the County Engineer for presentation to the County Clerk stating that the division is exempt from subdivision-plat requirements.
    • If the property lies wholly or partially within a municipality's extraterritorial jurisdiction, the platting approval procedure is established by the applicable approved interlocal agreement.
    • The county regulations became effective December 22, 2025; plats and permits approved before that date remain subject to the regulations in effect when applied for.
    “Exemptions to platting shall be allowed only after a determination is made and found to be in the best interest of the County.”
  • Subdividing landRegulated (with conditions)

    Subdivision of property outside municipal limits within Austin County.

    • A plat is required when subdividing a tract into two or more parts to lay out a subdivision, subject to statutory and county exemptions.
    • Plat exemptions require a County determination, must meet minimum lot-size requirements under the Austin County OSSF Order, and must have direct roadway access.
    • Property within a municipality or applicable extraterritorial jurisdiction may be subject to that municipality’s platting authority and procedures.
    “A plat is required when subdividing property”
  • Driveway accessRequired

    Property divisions in unincorporated Austin County seeking an exemption from platting requirements.

    • The property division must satisfy the applicable statutory exemption and county determination.
    • Direct roadway access is required; easement access is not allowed.
    • A separate driveway or culvert permit may also be required where work affects a county right-of-way.
    “The division of property must still meet the minimum lot size requirements set forth in the Austin County On-Site Sewage Facility Order, and shall meet the direct roadway access requirements established (no easement access allowed).”
  • Building in a floodplainRequired

    Development in Austin County flood zones handled through the Austin County Planning and Development Department.

    • The county's published permit materials include a floodplain-development application pathway.
    • Flood-zone fees differ from non-flood-zone fees and may include inspection and enclosed-area charges.
    • The development application identifies the flood-zone panel and states that the permit is valid for one year from issuance.

    residential flood-zone permit fee: 200 USD (plus 0.05 cents per square foot of enclosed home and garage area) · commercial project under $1 million flood-zone permit fee: 1000 USD (plus $200 inspection fee and 0.10 cents per square foot of enclosed area)

    “A Floodplain Development Permit shall be required to ensure conformance with the provisions of this Court Order.”
  • Permit feesPublished (with conditions)

    Austin County development, building, driveway, engineering-review, subdivision, and on-site sewage facility permits and related county reviews.

    • The fee schedule was adopted by the Austin County Commissioners Court on 7/28/2025; this is an adoption date, not an independently stated effective date.
    • Residential fees vary by flood-zone status and improvement type.
    • For residential buildings in a flood zone, the schedule lists a $200 permit fee plus (.05) cents per square foot of enclosed area for the home and garage only; in a non-flood zone it lists a $100 permit fee.
    • For other appurtenant structures, the schedule lists $200 plus (.05) cents per square foot in a flood zone and $100 in a non-flood zone for structures 200 square feet and over.
    • Fill and lot grading, culvert, commercial, multifamily, apartment, hotel, commercial development, engineering review, subdivision, and OSSF fees vary according to the listed project category and measurements.
    • The schedule states that review fees include the initial submittal and one resubmittal; additional submittals are subject to a resubmittal fee.
    • The applicant is responsible for outside engineering review costs, which are quoted before initial review and due before plan or document approval.
    • The schedule states that it controls over fee amounts in existing forms and regulations.
    • Austin County's permits page directs applicants to contact the Planning and Development Department to submit payment.

    residential permit fee in flood zone: 200 USD (plus (.05) cents per square foot of enclosed area for home and garage only) · residential permit fee in non-flood zone: 100 USD · single-family conventional OSSF fee: 275 USD (one single-family residence) · non-single-family or commercial conventional OSSF fee: 475 USD (one non-single-family residence or commercial) · commercial development permit fee for projects under $1 million: 1000 USD (plus $200 inspection fee; flood-zone projects also add (.10) cents per square foot of enclosed area) · commercial development permit fee for projects from $1 million to $5 million: 2500 USD (plus $500 inspection fee; flood-zone projects also add (.10) cents per square foot of enclosed area) · commercial development permit fee for projects over $5 million: 5000 USD (plus $500 inspection fee; flood-zone projects also add (.10) cents per square foot of enclosed area) · commercial development permit fee for projects over $10 million: 10000 USD (plus $1,000 inspection fee; flood-zone projects also add (.10) cents per square foot of enclosed area) · return check fee: 30 USD · reinspection fee: 100 USD (listed for single-family residential and generally) · fine for not obtaining a permit: greater of permit amount plus 2x permit amount penalty or $25/day USD (each day without a permit is a separate violation)

    “Austin County Permitting & Engineering Fee Schedule Adopted in theAustin County Commissioners Court on 7/28/2025”
  • Permit processPublished (with conditions)

    County-administered development applications, subdivisions, land divisions, commercial projects, single-family applications, septic and minor construction applications outside incorporated municipal jurisdiction.

    • Applicants must use the county's designated email channels according to application type.
    • For development-related applications, Austin County requires a pre-application meeting unless the County Engineer or designee waives it because the project is minor or has minimal infrastructure impact.
    • Applications meeting county requirements are placed on the next available Commissioners Court agenda for consideration; official action requires an affirmative majority vote.

    development permit validity: 1 year (from date of issuance)

    “Before the acceptance or submittal of any development-related application, the applicant of the proposed development shall meet with Austin County to review the project and make recommendations designed to assist in processing and expediting the application promptly, while minimizing any issues.”
  • County-wide zoningAbsent

    Texas counties have no general zoning authority in unincorporated areas and Austin County's permitting page references no zoning ordinance.

    Austin County Permits ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

  • Owner-builder exemptionConditional

    An owner performing electrical, plumbing, or air-conditioning and refrigeration work on the owner's own residence or homestead in Texas.

    • Electrical work is exempt from state electrician licensing when performed on a dwelling the person owns and resides in.
    • Plumbing is exempt from state plumbing licensing when performed by the property owner in the property owner's homestead.
    • Air-conditioning and refrigeration contracting is exempt from the applicable state registration requirements when performed in a building owned solely by the person as the person's home.
    • These exemptions do not establish a blanket exemption for every construction trade or contractor-regulated activity.
    “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed as electricians.”
    One more reviewed finding on this topic
    • Conditional — Electrical work on a dwelling owned and occupied by the property owner in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed”
  • 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:”
    One more reviewed finding on this topic
    • Partial — Industrialized housing and buildings, modules, and modular components built for Texas under the Industrialized Housing and Buildings program.
      “Effective July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
  • Who permits septicMixed (with conditions)

    OSSF permitting, inspection, and administration throughout Texas.

    • TCEQ administers the program in areas where no local jurisdiction has been authorized.
    • A local governmental entity may administer the program only after an order, ordinance, or resolution is approved by TCEQ.
    • The authorized agent administers the program within its approved area of jurisdiction.
    • Local programs may adopt requirements more stringent than state minimums.
    “The authorized agent is responsible for the proper implementation of Texas Health and Safety Code, Chapter 366, 30 TAC Chapter 285, including reviewing OSSF permit applications, conducting inspections, investigating complaints, and more.”
    One more reviewed finding on this topic
    • Mixed — On-site sewage facilities, including septic systems, throughout Texas
      “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.”
  • 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.”
    One more reviewed finding on this topic
    • Limited — County zoning authority over unincorporated land in Texas, where a specific statutory grant applies.
      “As you suggest, a county has very limited and specific zoning authority, and none that may be used to regulate construction or operation of the proposed facility.”
  • 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.”
    One more reviewed finding on this topic
    • Limited — County fire-code adoption and building-permit authority for specified buildings in unincorporated areas of qualifying Texas counties, including multifamily residential dwellings of four or more units.
      “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.”

Inside cities and towns in Austin County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Building code adoptedAdopted (with conditions)

    Building-code adoption and enforcement within the incorporated City of Bellville.

    • A building permit must be obtained before construction.
    • Before a building permit is issued, all plans and documents must be approved and all applicable fees paid.
    • The page lists 2020 National Electrical Code; 2018 International Building, Residential, Energy Conservation, Existing Building, Fuel Gas, and Mechanical Codes; and 2012 International Plumbing Code.
    • All building projects requiring a permit must be inspected; inspection fees are $50.00, first reinspection is $75.00, and subsequent reinspections are $100.00.
    • The final inspection must be passed before occupancy.

    inspection fee: 50 USD · first reinspection fee: 75 USD · subsequent reinspection fee: 100 USD

    “The City of Bellville adopts the most current version of the International Building Code.”
    2 more reviewed findings on this topic
    • Adopted (with conditions) — Construction requiring permits within the City of Bellville, an incorporated municipality in Austin County.
      “The City of Bellville adopts the most current version of the International Building Code.”
    • Adopted (with conditions) — Building-code adoption and local amendments within the incorporated City of Sealy.
      “The city adopts the following codes [...] (1) International Building Code, 2018 Edition;”
  • Local zoningPresent

    Zoning administration within the incorporated City of Bellville, Austin County, Texas.

    • The cited zoning materials establish Bellville municipal zoning only and do not establish zoning rules for other Austin County municipalities or unincorporated areas.
    • Specific uses may require a conditional-use permit, zoning change, or variance application.
    “RESIDENTIAL 1 (22,000 SQ. FT. LOTS) RESIDENTIAL 2 (12,500 SQ. FT. LOTS) RESIDENTIAL 3 (7,000 SQ. FT. LOTS) MIXED USE DISTRICT COMMERCIAL DISTRICT MOBILE HOME DISTRICT INDUSTRIAL DISTRICT HISTORICAL DISTRICT AGRICULTURAL USE”
    3 more reviewed findings on this topic
    • Present (with conditions) — Zoning administration within the City of Bellville, Texas.
      “Zoning - Conditional Use Permit Application Zoning Change Request Application Zoning -Application for Variance”
    • Present — Zoning within the City of Bellville, an incorporated municipality in Austin County.
      “After Hours Contact Information Bellville Zoning Map Building Permits & Inspections”
    • Present (with conditions) — Zoning regulation and zoning-related approvals within the City of Bellville, an incorporated municipality in Austin County.
      “Zoning - Conditional Use Permit Application Zoning Change Request Application Zoning -Application for Variance”
  • Who permits septicLocal (with conditions)

    OSSF permitting within the Town of San Felipe, Austin County, Texas.

    • TCEQ's official local-contacts document lists the Town of San Felipe as a separate authorized agent from Austin County.
    • OSSF permits and administration remain subject to Texas Health and Safety Code Chapter 366, 30 TAC Chapter 285, and the Town's approved authorized-agent order.
    • The cited TCEQ local-contacts document was updated September 11, 2017; the current town contact should be confirmed before filing.
    “Austin Austin County AA Sandra Vrablec (979) 865-5911 Town of San Felipe AA Sue Foley (979) 885-7035”

Still unanswered

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

  • Certificate of occupancy — Whether Austin County requires a certificate of occupancy, as distinct from the statutory certificate of compliance, for buildings or uses in the county.
  • Short-term rentals — Short-term rental of ordinary residential dwellings in Austin County, including unincorporated areas and municipal areas.

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 Austin County, Texas

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

Austin County scores 54/100 on the Bolthole Index, a solid county profile. Its strengths: low administrative friction for a quiet rural property and a stronger property-autonomy legal backdrop. Watch-outs: sparse surroundings — about 23,882 people within a 30-minute drive.

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

Austin County requires a building permit only in limited cases (such as floodplains or specific zones), and it has no county-wide zoning. Onsite septic is permitted by Austin County Planning & Development (OSSF authorized agent of TCEQ). 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.

How much does land cost in Austin County, Texas?

Land in Austin County runs about $6,189 per acre, based on the latest county data.

What is the water situation in Austin County?

Austin County gets about 45.5" of rain a year, with severe drought in roughly 19% of years.

How remote is Austin County?

A representative private-land location has about 23,882 people within a 30-minute drive and 10,390,487 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.

How Austin compares in Texas

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