Bolthole Index

Matagorda County, Texas

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

64Index Score / 100
#73 of 254 in Texas

Unincorporated Matagorda County, Texas requires a building permit for structures of any size or improvement, in both flood and non-flood zones -- an exception to the usual rule that Texas counties don't run building-permit programs12. The county has no zoning ordinance, so it sets no minimum lot size or setback34. Septic permits go through the same office, Matagorda County Environmental Health, which is the Texas Commission on Environmental Quality's authorized agent for on-site sewage facilities5. Expect the flood zone, not zoning, to shape what and where you can build.

At a glance

Building permit
Required for structures of any size or an improvement, in flood and non-flood zones alike1
Zoning
None; no minimum lot size, setback or use restriction is set countywide34
Septic permit
Required for new construction and system updates; the county is TCEQ's authorized agent5
RV on your land
No zoning restriction on occupancy, but a building permit is required if the RV sits in a flood zone4
Minimum lot size
None set by zoning, but the county calls for roughly 1 acre where a private well and septic system share a lot46
Owner-builder exemption
Unconfirmed; not stated on the county's own site7
Septic-favorable soils
Only about 4.1% of the county's land is rated free of severe limits for a conventional drain field8
Property tax
About 1.3% effective rate; median bill around $2,035/year910

Who to call

Building permits

Matagorda County Environmental Health Department

Issues building permits for new construction, additions, manufactured and relocated homes, barns, carports and other structures in both flood and non-flood zones of unincorporated Matagorda County; also administers floodplain management, fill-dirt permits, and commercial building permits (with Fire Marshal sign-off)

979-244-2717

First Floor, 2200 7th Street, Bay City, Texas 77414

Septic permits

Matagorda County Environmental Health Department - Septic Systems

Issues on-site sewage facility (septic) permits for unincorporated Matagorda County as the Texas Commission on Environmental Quality's authorized agent

979-244-2717

First Floor, 2200 7th Street, Bay City, Texas 77414

Also useful

Matagorda County 911 Addressing/Emergency Management

Assigns the 911 address required before applying for a building permit anywhere in unincorporated Matagorda County

(979)323-0707

1801 Seventh Street, (Rear Entrance), Bay City, TX 77414

Well permits

Matagorda County Ground Water Conservation District

Registers private water wells for land not served by public or community water in Matagorda County

(979)323-9170

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 Matagorda County, Texas?

Yes: unincorporated Matagorda County requires a building permit for structures of any size or an improvement, in both a flood zone and a non-flood zone111. The county's own permit guide lists detached garages, manufactured homes, relocated homes, barns, workshops, carports, storage buildings, and add-ons and remodels among the covered structures, plus a recreational vehicle placed in a flood zone11. That's unusual for Texas: state law generally limits a county's building-code and building-permit authority to specific situations tied to population size or distance from an international border, rather than handing every county a general building-permit power the way it does a city2. Matagorda County's Environmental Health Department runs this permitting program itself, alongside floodplain management1.

Who is the Matagorda County building department, and how do you reach them?

Matagorda County Environmental Health Department issues building permits for unincorporated county land, and it's reached at 979-244-2717 from its office on the first floor of 2200 7th Street, Bay City, Texas 7741411. Two other steps come before that permit, though: you need a 911 address from the county's 911 Addressing/Emergency Management office, at 1801 Seventh Street (Rear Entrance), Bay City, TX 77414, phone (979) 323-0707, and if your home isn't on sewer, your septic installer has to obtain the septic permit first1211. If you're connecting to a municipal utility district's sewer instead of a septic system, you need a letter from that district confirming the connection before Environmental Health will issue your building permit11. For a driveway or culvert onto a county road, get a work order from your county commissioner's office; onto a state highway or farm-to-market road, that permit comes from the Texas Department of Transportation instead1113.

Does Matagorda County have zoning?

Matagorda County has no zoning ordinance -- Texas law gives general zoning power only to cities, and hands counties that power only in a handful of narrow, named situations that don't include Matagorda County -- so the county sets no minimum lot size, no setback and no use restriction across unincorporated land3144. Because there's no zoning ordinance, the county also places no zoning-based restriction on an accessory dwelling, an RV, a tiny home or a manufactured home used as a residence4. That doesn't mean anything goes: the county's own building-permit program still reaches manufactured homes, relocated structures, carports and an RV placed in a flood zone, no matter what zoning does or doesn't say11. And on a lot without public water and sewer, the county's septic rules call for roughly an acre for the well and septic system together, which functions as a practical minimum lot size that zoning never set6.

How do septic permits work in Matagorda County?

Matagorda County requires a septic permit for any new construction and for updating an existing system, and the same Environmental Health Department that issues building permits administers this program as the Texas Commission on Environmental Quality's authorized agent65. You need a Texas-licensed septic system installer and a licensed maintenance provider for the system, and the county calls for roughly an acre for the well and septic system together, with a set distance required between the septic tank lines and the well6. Before Environmental Health will issue your building permit for a new home, your septic installer has to have already obtained the septic permit, unless you're connecting to a municipal utility district's sewer system instead11. Statewide, Texas law lets a single-family home on at least 10 acres skip the OSSF permit if it meets a list of conditions, including keeping every part of the system at least 100 feet from the property line and being the only dwelling on the tract, though the county's own program still applies below that threshold15. Soils are also a real constraint here: only about 4.1% of Matagorda County's land is rated free of severe limits for a conventional drain field8.

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

Matagorda County's lack of a zoning ordinance means there's no zoning-based restriction on living in an RV, a tiny home or a manufactured home on your own land43. The county's permitting rules still apply on top of that, though: an RV placed in a flood zone needs a building permit, and a manufactured or relocated home needs one everywhere in the county, flood zone or not11. A flood zone also carries its own limits regardless of what kind of structure you place there: if a home is appraised at $50,000, a repair or improvement has to cost less than $25,000, or you must demolish, elevate the structure to the base flood elevation, or relocate it to a non-flood zone11. Confirm your specific parcel's flood-zone status with Environmental Health before assuming an RV or tiny home is permit-free, since that status decides whether a permit is required, not zoning114.

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

  1. Get a 911 address for your parcel from the county's 911 Addressing/Emergency Management office at 1801 Seventh Street (Rear Entrance), Bay City, TX 77414, (979) 323-0707, before applying for anything else12.
  2. If you won't be on public or community water, register a well; call the Matagorda County Ground Water Conservation District at (979) 323-9170 with questions16.
  3. Line up a Texas-licensed septic installer and get your septic permit from Environmental Health before applying for your building permit, budgeting for roughly an acre if the well and septic system will share the lot6.
  4. Apply for your building permit at Environmental Health, First Floor, 2200 7th Street, Bay City, Texas 77414, 979-244-2717 -- required for new construction, an addition, or a manufactured home alike11.
  5. If any part of your land is in a flood zone, plan around the substantial-damage rule: a repair or improvement can't reach 50% of the home's appraised value without triggering a demolition, elevation or relocation requirement11.
  6. For a driveway or culvert onto a county road, get a work order from your county commissioner's office; onto a state highway or farm-to-market road, apply to TxDOT instead1113.
  7. Budget for property tax: Matagorda County runs about a 1.3% effective rate, with a median bill near $2,035 a year910.

What to check before you buy land in Matagorda County, Texas

Matagorda County is genuinely rural: population density runs about 33.3 people per square mile across roughly 36,359 residents, and the county sits about 57 miles from the nearest metro area171819. Terrain is flat and low-lying -- all of the county sits at 15% slope or less, and only about 11.8% is wooded -- so flood exposure, not slope, is the real land-use question here2021. Septic-favorable soils are scarce: only about 4.1% of the county's land is rated free of severe limits for a conventional drain field, and the county's own acre-for-well-and-septic rule adds a practical floor to lot size on top of that86. Rainfall averages about 45.4 inches a year, with severe drought in roughly 16.7% of recent years, and federal land is minimal at about 3.1% of the county, so a flood-zone map matters far more here than public land ever will222324. Farmland has recently valued around $3,351 an acre and a typical home around $209,960, against a roughly 1.3% effective property tax rate and a median bill near $2,035 a year2526910.

Watch-outs

  • Matagorda County requires a building permit for almost any structure in both flood and non-flood zones -- don't assume the usual 'Texas counties have no building permits' rule applies here111.
  • An RV only needs a Matagorda County building permit when it sits in a flood zone; confirm your parcel's flood-zone status with Environmental Health before assuming otherwise11.
  • Whether Matagorda County recognizes an owner-builder exemption from contractor licensing isn't stated on the county's own site; ask Environmental Health directly before assuming one applies7.

Sources

  1. Matagorda County Required Permits (2026 county census)
  2. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  3. Matagorda County Environmental Health (2026 county census)
  4. Texas law on county zoning and building authority
  5. On-Site Septic Facilities and Installers (2026 county census)
  6. Matagorda County Environmental Health Department - Septic Systems (matagordatx.gov)
  7. On-Site Septic Facilities and Installers (2026 county census)
  8. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  9. Effective property tax rate: Bolthole Index county data
  10. Median property tax bill: Bolthole Index county data
  11. Matagorda County Environmental Health Department (matagordatx.gov)
  12. Matagorda County 911 Addressing/Emergency Management (matagordatx.gov)
  13. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  14. Local Government Code Chapter 231, County Zoning Authority (Texas statewide rule), quoted and re-checked
  15. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  16. Matagorda County Ground Water Conservation District (matagordatx.gov)
  17. Population density: Bolthole Index county data
  18. County population: Bolthole Index county data
  19. Distance to the nearest metro area: Bolthole Index county data
  20. Share of land at 15% slope or less: Bolthole Index county data
  21. Wooded share of land: Bolthole Index county data
  22. Annual precipitation: Bolthole Index county data
  23. Share of years in severe drought: Bolthole Index county data
  24. Federal land share: Bolthole Index county data
  25. Farmland value per acre (USDA census): Bolthole Index county data
  26. Typical home value (Zillow): Bolthole Index county data

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.

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County locator

Matagorda County in Texas

64
County map
Matagorda County highlighted among the Texas counties · colored by Index score

How Matagorda County scores

Seclusion76100% ev.
Self-Sufficiency37100% ev.
Admin Boringness5990% ev.
Durability46100% ev.
Property Autonomy71100% ev.
Carry Cost80100% 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 →

$210kTypical home
1.3%Property tax
$3,351Land / acre
45.4"Annual rain
16.7% of yrsSevere drought
5.2 / yr (+4.6)Mid-century 100°F days
18.2 daysMid-century dry spell
2.75" (+4.1%)Mid-century 1-day rain
1.37×Wildfire change factor
100%Forward climate coverage
$1,968Home insurance / yr
-1.6% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
799,606People within 2 hr
10,922Radius comparison (15 mi)
33.3People / sq mi
3.1%Federal land
100%Land at 15% slope or less
4.1%Septic soil without severe limits
22,910 acWorkable land screen
11.8%Wooded land
38.1 tonsBiomass / forest ac
70.6°FAvg temp

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Answers from the rulebook for Matagorda County

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

Matagorda County rules

  • Building permitRequired

    Structures and improvements in both flood and non-flood areas, including residential, commercial, manufactured, accessory, storage, RV-cover, remodeling, and similar construction regulated by Matagorda County.

    • A 911 address from Matagorda County 911 Addressing/Emergency Management is required before starting any project.
    • For a dwelling, a septic installer must obtain a septic permit before the building permit can be obtained.
    • If connecting to a MUD sewer system, a letter from the MUD District confirming the connection must be provided.
    • The source states the listed examples are not exhaustive.
    “You are required to obtain a building permit in Matagorda County for structures of any size or an improvement in a Non Flood Zone and in a Flood Zone.”
  • Owner-builder exemptionConditional

    Property-owner or homeowner installation of on-site sewage facilities.

    • A property owner or homeowner may install only if that person is also a Registered Installer.
    • The source states the county rule applies regardless of lot size or acreage.
    “All construction of any type of on-site sewage facility shall be by a Registered Installer. There shall be no property owner/homeowner installation unless the property owner/homeowner is also a Registered Installer.”
  • Zoning districts · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Minimum dwelling size · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Minimum lot size · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Setbacks · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Lot coverage · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Building height · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Living in an RV · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Camping on your land · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Tiny homes · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Manufactured homes · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Accessory dwellings · by state lawNo county rule

    Unincorporated Matagorda County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Matagorda County has no zoning ordinance. The county legal census found no county zoning ordinance, citing matagordatx.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.”
  • Who permits septicMixed (with conditions)

    On-site sewage facilities in Matagorda County.

    • TCEQ Chapters 285 and 366 and the Matagorda County Commissioners’ Court order both govern.
    • Matagorda County Environmental Health Department administers and enforces the rules in Matagorda County.
    • The county source states the county amendments are more stringent than Chapter 285.
    “Septic system design, construction, location, installation, alteration, extension, repair, operation, maintenance, and permitting are regulated under rules formulated and adopted by the Texas Commission on Environmental Quality (TCEQ), Chapters 285 and 366, and by Court Order of Matagorda County Commissioners’ Court. In Matagorda County, these rules are administered and enforced by the Matagorda County Environmental Health Department (MCEHD).”
  • Septic permitRequired

    All on-site sewage facilities and septic systems in Matagorda County.

    • The county source states a permit is required regardless of lot size or acreage.
    • For new construction and updates to existing septic systems, the county required-permits document also requires a septic permit.
    • Construction must be by a Registered Installer.
    “A permit will be required for all On-Site Facilities, regardless of the size of the lot or acreage onto which they are installed.”
  • Mandatory utility hookupConditional

    Utility connections associated with county-regulated residential construction.

    • If connecting to a MUD District, a letter confirming connection to that sewer system is required before obtaining a dwelling building permit.
    • If not using public or community water, a registered well is required.
    “If you are connecting to a MUD District you must provide a letter from the MUD District you will be connecting to stating that you will be connecting to that system for sewer.”
  • Subdividing landRegulated (with conditions)

    Subdivision regulation administered by Matagorda County.

    • The official county page identifies county subdivision regulations but the detailed numeric standards and exceptions were not extracted from the linked ordinance during this research.
    “Subdivision Regulations Matagorda County Subdivision Regulations”
  • Driveway accessRequired

    Driveways and culverts on county roads in Matagorda County.

    • For county roads, contact the county commissioner for a work order and provide the physical address.
    • For a state highway or farm-to-market road, contact the Texas Department of Transportation instead.
    “You will need to contact your county commissioner to get a work order issued for a driveway/culvert on all county roads. Please provide the physical address for the site. If you are on a state highway or a farm to market road you will need to contact the Texas Department of Transportation.”
  • Building in a floodplainRequired

    Construction, improvement, fill, and related work in Matagorda County flood zones.

    • A permit is required to add fill dirt in flood zones.
    • For a flood-zone home appraised at $50,000, repair or improvement must cost less than $25,000 or the structure must be demolished, elevated to base flood elevation, or relocated to a non-flood zone.

    substantial-damage/substantial-improvement threshold: 50 percent (The source describes a $50,000 appraisal and $25,000 repair/improvement example.) · example home appraisal: 50000 USD · example maximum repair/improvement cost: < 25000 USD (Otherwise demolish, elevate to base flood elevation, or relocate to a non-flood zone.)

    “You will need a permit in order to add any fill dirt to level your property in flood zones in Matagorda County.”
  • Permit feesPublished (with conditions)

    Environmental Health building, RV/storage, septic, food, and related permit fees.

    • The published fee schedule is effective May 1, 2022.
    • Commercial building permits over 2,000 square feet are $300; under 2,000 square feet are $200; other building permits are $100; RVs and 100-square-foot storage buildings in a flood zone are $70.
    • Non-commercial septic permits are $200, commercial septic permits are $250, and re-inspection fees are $100.

    commercial building permit over 2000 square feet: 300 USD · commercial building permit under 2000 square feet: 200 USD · building permit: 100 USD · RV or 100 square foot storage building in flood zone: 70 USD · non-commercial septic permit: 200 USD · commercial septic permit: 250 USD · re-inspection fee: 100 USD

    “ENVIRONMENTAL HEALTH DEPARTMENT FEES EFFECTIVE MAY 1, 2022 BUILDING PERMITS Commercial Building Permits > 2000 Sq Feet - $300.00 < 2000 Sq Feet - $200.00 Building Permits $100.00 RV’s & 100 Square Ft Storage Bldgs in a Flood Zone $ 70.00 SEPTIC PERMITS Non – Commercial $200.00 Commercial $250.00 Re-Inspection Fee $100.00”
  • Permit processPublished (with conditions)

    County building and septic permit process.

    • A 911 address is required before starting any project.
    • A dwelling building permit requires a septic permit first.
    • A MUD sewer-connection letter is required when connecting to a MUD District.
    “Please Note: You must have a 911 address from the Matagorda County 911 Addressing/Emergency Management office before you can start any project.”
  • County-wide zoningAbsent

    The county administers subdivision and floodplain regulations but no traditional zoning is indicated; Texas counties generally lack zoning authority over unincorporated land.

    Matagorda County Environmental Health ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

  • Building code adoptedPartial

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

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

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

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

    Texas counties adopting zoning regulations for specified unincorporated or otherwise specially defined areas.

    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    • Other Chapter 231 subchapters address special areas including the Amistad Recreation Area in Val Verde County, military zones, certain lakes, the El Paso Mission Trail Historical Area, Lake Somerville, and Falcon Lake in Zapata County.
    • The cited statute was enacted effective September 1, 1987; the Falcon Lake subchapter was added effective June 15, 2007, and amended effective September 1, 2009.

    Padre Island distance from publicly owned park or recreational development: <= 2 miles (Area must be outside a municipality and in Cameron or Willacy County.) · Padre Island distance from beach, wharf, or bathhouse: <= 2 miles (The beach, wharf, or bathhouse must be used by at least 500 persons annually.)

    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
  • county building authorityLimited

    Texas counties adopting and enforcing fire-code building permits for specified buildings in unincorporated areas and applying residential building-code standards in certain counties.

    • Under Section 233.061, the county must have a population over 250,000 or be adjacent to a county with a population over 250,000.
    • Under Section 233.062, the fire code applies only to commercial establishments, public buildings, and multifamily residential dwellings consisting of four or more units constructed in an unincorporated area.
    • The fire code does not apply to an industrial facility having a fire brigade that conforms to Occupational Health and Safety Administration requirements.
    • A covered applicant must submit a plan and a commissioners-court-set application fee; the county must issue or deny the permit within 30 days, and failure to act within 30 days approves the construction for purposes of the subchapter.
    • The fire code must conform to the International Fire Code or Uniform Fire Code as those codes existed on May 1, 2005, or establish protective measures exceeding those standards; later editions may be adopted.
    • Residential standards under Section 233.152 apply only if the county adopts a resolution or order and the county is within 50 miles of an international border or has a population over 100.
    • Those residential standards apply only to new single-family-house or duplex construction beginning after September 1, 2009; manufactured or modular structures governed by Occupations Code Chapters 1201 or 1202 are excluded from the definition of new residential construction.
    • A municipality's building code controls in its extraterritorial jurisdiction, and Section 233.152 does not authorize county prior approval of new residential construction or county zoning regulations.
    • Fire-code inspection and permit fees may be charged under a fee schedule based on building type, limited to amounts necessary to administer and enforce the subchapter; inspection fees must be reasonable and reflect approximate inspection costs.

    county population threshold for fire-code authority: > 250000 persons (A county adjacent to a county over 250,000 also qualifies.) · multifamily residential dwelling threshold: >= 4 units (The fire code applies only to covered buildings constructed in an unincorporated area.) · residential-code border distance: <= 50 miles (Alternative qualification is county population over 100.) · application decision period: 30 days (If the commissioners court does not issue or deny the permit within 30 days after receiving the application and fee, construction is approved for purposes of the subchapter.) · residential standards effective construction date: > 2009-09-01 (Applies only to new residential construction that begins after September 1, 2009.)

    “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code. [...] The fire code applies only to the following buildings constructed in an unincorporated area of the county: (1) a commercial establishment; (2) a public building; and (3) a multifamily residential dwelling consisting of four or more units.”

Still unanswered

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

  • Inspections — County building inspections.
  • Certificate of occupancy — Certificates of occupancy for county-regulated buildings.
  • Local zoning — Aggregate local zoning across Matagorda County municipalities and unincorporated areas.
  • Off-grid sanitation — Off-grid sanitation systems in Matagorda County.
  • Well permit — Water wells in Matagorda County.
2 more unanswered
  • Agricultural exemption
  • Short-term rentals

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

Living off-grid in Matagorda County, Texas

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

Matagorda County scores 64/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and sparse surroundings — about 10,922 people within 15 miles. Watch-outs: workable self-sufficiency basics (45.4″/yr rainfall).

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

Matagorda County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by Matagorda County Environmental Health Department (OSSF authorized agent under TCEQ Chapters 285/366 and county Commissioners' Court order). 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 Matagorda County?

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

Land in Matagorda County runs about $3,351 per acre, based on the latest county data.

What is the water situation in Matagorda County?

Matagorda County gets about 45.4" of rain a year, with severe drought in roughly 16.7% of years.

How remote is Matagorda County?

A typical private-land location has about 10,922 people within 15 miles and 5,386,532 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Matagorda compares in Texas

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