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 improvements in flood and non-flood areas1. County zoning does not restrict unincorporated land, but city zoning differs; Matagorda County Environmental Health administers septic permits, with additional city approval for private septic systems in Palacios2345. A dwelling needs a septic permit or, for a MUD sewer connection, the district’s connection letter before the building permit6.
At a glance
Building permit
Required for structures of any size or improvements in flood and non-flood areas1
Zoning
No zoning ordinance in unincorporated areas; subdivision and floodplain rules still apply27
Septic permit
Required for every on-site sewage facility regardless of acreage; county Environmental Health administers it84
RV on your land
No county zoning restriction in unincorporated areas; an RV in a flood zone needs a building permit29
Minimum lot size
None set by county zoning; the county requires 1 acre for a private well and septic system on the same lot210
Owner-installed septic
Allowed only when the owner is also a Registered Installer11
Septic-favorable soils
Only about 4.1% of the county's land is rated free of severe limits for a conventional drain field12
Property tax
About 1.3% effective rate; median bill around $2,035/year1314
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)
Issues on-site sewage facility (septic) permits for unincorporated Matagorda County as the Texas Commission on Environmental Quality's authorized agent
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Do you need a building permit in Matagorda County, Texas?
Unincorporated Matagorda County requires a building permit for structures of any size or improvements in flood and non-flood areas, including manufactured and relocated homes, barns, workshops, RV covers, carports, sheds, additions and remodels; an RV itself is listed when placed in a flood zone1. The county Environmental Health Department handles county building permits, and commercial plans need Fire Marshal sign-off15. Inside Bay City, the city handles its own building permits, including permits before moving a house; county Environmental Health remains the OSSF septic-permit authority164. Matagorda County adopted the 2021 International Fire Code on May 4, 2026; we could not confirm comprehensive county building, residential, plumbing, mechanical or electrical codes17. Ask Environmental Health which site inspections apply, because no universal inspection schedule was confirmed18.
Who issues building permits in Matagorda County, and how do you reach the office?
Matagorda County Environmental Health Department handles county building permits at 979-244-2717, First Floor, 2200 7th Street, Bay City, Texas 7741415. Before beginning a project, obtain a 911 address from Matagorda County 911 Addressing/Emergency Management at 1801 Seventh Street, (Rear Entrance), Bay City, TX 77414, phone (979)323-070719. For a dwelling, have the septic installer obtain the septic permit first, or provide the MUD district’s sewer-connection letter6. The schedule effective May 1, 2022 lists a $100 building-permit fee and $70 for an RV or 100-square-foot storage building in a flood zone; confirm current fees with Environmental Health20. We could not confirm a complete application checklist or review timeline; ask Environmental Health before scheduling construction21.
Does Matagorda County have zoning?
Unincorporated Matagorda County has no county zoning ordinance, so county zoning does not set minimum dwelling size, setbacks, lot coverage, building height or occupancy rules for RVs, tiny homes and accessory dwellings2. Palacios has city zoning, while Bay City has airport hazard and compatible-land-use zoning; the airport rules do not establish the full extent of Bay City’s general zoning32223. County Environmental Health administers OSSF septic permits, and Palacios additionally requires a petition to and approval of the city council for private septic systems45. Matagorda County also administers subdivision regulations, but we could not confirm their detailed standards and exceptions; ask Environmental Health before dividing land7.
How do septic permits work in Matagorda County?
Matagorda County requires a septic permit for every on-site sewage facility regardless of lot size or acreage, with Environmental Health administering county and state OSSF rules84. Owner installation is allowed only when the owner is also a Registered Installer; we could not confirm a general building owner-builder exemption1124. Septic permit fees include inspection services and a license to operate, and an approved maintenance company must perform testing and reporting; ask Environmental Health for inspection stages and any sale or transfer requirements, which we could not confirm25. The schedule effective May 1, 2022 lists $200 for non-commercial septic permits, $250 for commercial septic permits and $100 for re-inspection; confirm current fees20. The county requires 1 acre for a well and septic system together, with separation between the well and septic tank lines10. Only about 4.1% of county land is rated without severe limitations for a conventional drain field, making an early site evaluation useful12.
Can you live in an RV or tiny home on your land in Matagorda County?
An RV in a Matagorda County flood zone needs a building permit; manufactured homes, relocated homes, RV covers and other structures or improvements are covered in both flood and non-flood areas1. Flood-zone fill dirt also needs a permit, and repairs or improvements reaching 50% of a structure’s appraised value can require elevation, relocation or demolition9. An off-grid setup still needs permitted wastewater disposal: every OSSF requires a septic permit, installation requires a Registered Installer, and an approved maintenance company must perform testing and reporting26. If public or community water is unavailable, the county requires a registered well; contact the Matagorda County Ground Water Conservation District at (979)323-91702728.
How do you build a home in Matagorda County, step by step?
Get the parcel's 911 address from Matagorda County 911 Addressing/Emergency Management before beginning the project6.
If public or community water is unavailable, arrange a registered well through the Matagorda County Ground Water Conservation District29.
Hire a Registered Installer and obtain the septic permit before seeking a dwelling building permit, or obtain the required MUD sewer-connection letter6.
Confirm flood-zone status and include any required floodplain or substantial-improvement documentation; fill dirt in a flood zone also needs a permit9.
Apply to Environmental Health for the building permit, confirm the current fee and ask for the application checklist, review timing and inspection plan12018.
For a county-road driveway or culvert, ask the county commissioner for a work order and provide the physical address; for a state highway or farm-to-market road, contact TxDOT30.
What should you check before buying land in Matagorda County, Texas?
All county land is at a 15% slope or less, while only about 4.1% is rated without severe limitations for a conventional drain field3112. A county-road driveway or culvert needs a commissioner's work order and a physical site address, while state-highway and farm-to-market access goes through TxDOT32. If public or community water is unavailable, the county directs the buyer to register a well through the Matagorda County Ground Water Conservation District29. The nearest city of 100,000 or more is about 57 miles from the county center, and population density is about 33.3 people per square mile3334. For carrying costs, the effective property-tax rate is about 1.3% and the median annual bill is about $2,0351314.
Watch-outs
A barn or workshop is included in Matagorda County’s building-permit requirement; we could not confirm an agricultural exemption, so ask Environmental Health before starting work1.
Matagorda County requires a septic permit regardless of acreage, and an owner may install the system only when also registered as an installer811.
Matagorda County does not issue certificate-of-occupancy requests or releases outside city limits; that does not remove the county building-permit requirement351.
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.
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%Soils rated "not limited" for septic (strict USDA rating)
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Cities and towns in Matagorda 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.
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 Matagorda County, including unincorporated areas and flood and non-flood zones.
A 911 address from the Matagorda County 911 Addressing/Emergency Management office is required before starting any project.
The stated scope includes structures of any size and improvements in both non-flood and flood zones.
Examples listed by the county include manufactured homes, relocated homes/buildings, barns, workshops, RVs in a flood zone, RV covers, carports, storage buildings or sheds, add-ons, and remodels.
For a dwelling, a septic installer must obtain a septic permit before the building permit can be obtained.
If connecting to a MUD District, the applicant must provide a letter from the MUD District stating that the applicant will connect to that sewer system.
Commercial buildings, including substations, wind turbines, solar panel farms, and battery storage facilities, require building permits.
“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.”
One more reviewed finding on this topic
Required — Structures of any size or improvements in Matagorda County, in non-flood and flood zones; commercial buildings are also covered.
“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. This includes, but not limited to, any garage that is built before or at a later date from the permanent dwelling and completely detached, manufactured homes, relocated homes/buildings, barns, workshops, RVs in a flood zone, RV covers, carports, storage buildings/sheds, add-ons and remodels.”
Owner-builder exemptionConditional
Property-owner or homeowner construction of an on-site sewage facility in Matagorda County.
A property owner or homeowner may install an on-site sewage facility only if that person is also a Registered Installer.
This is an OSSF-specific condition and does not establish a general building owner-builder exemption.
“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.”
2 more reviewed findings on this topic
Conditional — Property-owner or homeowner installation of on-site sewage facilities.
“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.”
Conditional — Owner or homeowner installation of an on-site sewage facility in Matagorda County.
“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.”
Building code adoptedPartial
The Matagorda County Fire Marshal's Office states that the County adopted the 2021 International Fire Code; this confirms county fire-code adoption but does not establish adoption of a comprehensive building code for all construction.
The source states the adoption date as May 4, 2026.
This claim is limited to the International Fire Code; no official source located in this pass established adoption of a general building, residential, plumbing, mechanical, or electrical code by the county.
Separate municipal codes may apply within incorporated municipalities.
adopted code: 2021 International Fire Code · adoption date: 2026-05-04
“Please Note: As of May 4, 2026 the County has adopted the 2021 International Fire Code”
One more reviewed finding on this topic
Partial — Countywide fire-code adoption administered by the Matagorda County Fire Marshal.
“Please Note: As of May 4, 2026 the County has adopted the 2021 International Fire Code”
InspectionsLimited
County floodplain administration and building-site compliance inspections.
The source describes site tours, inspection of building sites, red-tagging unpermitted structures, and complaint investigations; it does not establish a universal inspection schedule for every building permit.
“Tours County to inspect building sites, red tags unpermitted structures, and investigates citizen complaints;”
Certificate of occupancyNot required
Certificate-of-occupancy requests or releases in unincorporated Matagorda County, outside city limits.
The county states that it issues building permits in unincorporated areas according to FEMA regulations.
“Matagorda County does not issue Certificate of Occupancy Request or Release in the Unincorporated Areas of the County.”
Zoning districts · by state lawNo county rule
Unincorporated Matagorda County: no county rule sets this, because Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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 Matagorda 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 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.
The county source identifies TCEQ Chapters 285 and 366 and a Matagorda County Commissioners Court order as the governing sources.
Matagorda County Environmental Health Department administers and enforces the rules in the county.
“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).”
One more reviewed finding on this topic
County (with conditions) — On-site sewage facilities in Matagorda County.
“administered and enforced by the Matagorda County Environmental Health Department”
Septic permitRequired
All on-site sewage facilities in Matagorda County, including new construction and updates to existing septic systems.
A permit is required regardless of lot size or acreage.
The county required-permits page separately states that a septic permit is required for any new construction and for updating existing septic systems.
For a dwelling, the septic permit must be obtained before the building permit.
“A permit will be required for all On-Site Facilities, regardless of the size of the lot or acreage onto which they are installed.”
Septic inspectionLimited
On-site sewage facilities in Matagorda County, including OSSF testing and reporting and permit-related inspection services.
Testing and reporting must be performed by an approved maintenance company.
The requirement applies regardless of population.
Matagorda County provides permits at a fee that includes inspection services and a license to operate the system as required by state law.
The source does not expressly state a separate general inspection requirement for every septic system or a separate sale/transfer inspection mandate.
population threshold: regardless of population
“Testing and reporting of On-Site Sewage Facilities must be performed by an approved maintenance company, regardless of population.”
One more reviewed finding on this topic
Required — On-site sewage facilities in Matagorda County.
“In addition, we provide permits to system owners at a reasonable fee which includes inspection services and a license to operate the system as required by state law.”
Off-grid sanitationLimited
On-site sewage facilities serving properties in Matagorda County.
A permit is required for every on-site facility regardless of lot size or acreage.
Construction must be performed by a Registered Installer; an owner or homeowner may install only if also a Registered Installer.
Testing and reporting must be performed by an approved maintenance company regardless of population.
“Testing and reporting of On-Site Sewage Facilities must be performed by an approved maintenance company, regardless of population.”
Well permitLimited
Properties not served by public or community water in Matagorda County.
The county directs persons not using public or community water to obtain a registered well through the Matagorda County Ground Water Conservation District.
“If you are not going to be on public or community water, you will need a registered well. Please call the Matagorda County Ground Water Conservation District at (979)323-9170”
Mandatory utility hookupConditional
Dwelling construction in Matagorda County where the applicant uses a MUD sewer connection or a private water source.
A MUD District connection requires a letter confirming connection to that sewer system.
If the property will not use public or community water, the county states that a registered well is needed.
“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.”
One more reviewed finding on this topic
Conditional — Dwelling construction connecting to a municipal utility district sewer system.
“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
Driveway or culvert work on county roads in Matagorda County.
A county commissioner must issue a work order for a driveway or culvert on county roads.
The applicant must provide the physical address for the site.
For a state highway or farm-to-market road, the applicant must contact TxDOT instead of the county commissioner.
“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.”
2 more reviewed findings on this topic
Required — Driveway or culvert work on county roads in Matagorda County.
“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.”
Limited — Driveways and culverts accessing county roads in Matagorda County.
“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
Development and improvements in flood zones in Matagorda County.
A building permit is required for structures or improvements in a flood zone.
Fill dirt added to level property in a flood zone requires a permit.
For a flood-zone home appraised at $50,000, repairs or improvements 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 cited example states a $50,000 appraised value and $25,000 repair/improvement threshold.)
“You will need a permit in order to add any fill dirt to level your property in flood zones in Matagorda County.”
Permit feesPublished
Matagorda County Environmental Health building and septic permits.
The fee schedule states it is effective May 1, 2022.
Commercial building permits over 2,000 square feet are $300; under 2,000 square feet are $200.
Building permits are $100.
RV and 100-square-foot storage-building permits in a flood zone are $70.
Non-commercial septic permits are $200; commercial septic permits are $250; 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”
One more reviewed finding on this topic
Published (with conditions) — Matagorda County Environmental Health building and septic permits.
“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 processPartial
County building and septic permit process in Matagorda County.
A 911 address is required before starting any project.
A septic permit must precede a dwelling building permit.
A MUD sewer-connection letter is required when connecting to a MUD District.
The county required-permits document does not provide a complete application checklist or review timeline.
“Please Note: You must have a 911 address from the Matagorda County 911 Addressing/Emergency Management office before you can start any project. [...] Before you can obtain a building permit for a dwelling, you must have a septic installer obtain a septic permit.”
2 more reviewed findings on this topic
Published (with conditions) — County building permit applications.
“Please Note: You must have a 911 address from the Matagorda County 911 Addressing/Emergency Management office before you can start any project. Address: 1801 Seventh Street, (Rear Entrance), Bay City, TX 77414, Phone: (979)323-0707”
Partial — County building-permit process administered through Environmental Health.
“Please Note: You must have a 911 address from the Matagorda County 911 Addressing/Emergency Management office before you can start any project. [...] Before you can obtain a building permit for a dwelling, you must have a septic installer obtain a septic permit. 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.”
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.
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 Matagorda County
Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.
Local zoningPresent (with conditions)
Airport-related zoning within the City of Bay City, Matagorda County, Texas.
The official Bay City site identifies airport zoning maps, permits, a land-use form, and an airport zoning ordinance.
This claim establishes airport-related municipal zoning only and does not establish the full extent of Bay City's general land-use zoning.
“Airport Zoning Maps Permits Land Use Form Airport Zoning Ordinance”
One more reviewed finding on this topic
Present (with conditions) — Land-use regulation within the incorporated City of Palacios, Matagorda County, Texas.
“The city adopted a zoning ordinance for the purpose of regulating uses within zones to encourage orderly development and encourage compatible growth through infill.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission — ask the county directly.
Agricultural exemption — Agricultural exemptions from Matagorda County construction, land-use, or permit requirements.
Short-term rentals — Short-term rental use in Matagorda County.
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 Matagorda 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 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.
