Bolthole Index

Robertson County, Texas

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

82Index Score / 100
#15 of 254 in Texas

Unincorporated Robertson County, Texas does not require a general residential building permit, but that does not make development permit-free12. The county lists zoning and floodplain permits through Rural Addressing, regulates subdivision plats, and runs its own septic permitting program345. Ask the relevant county office about parcel-specific zoning and floodplain requirements before designing the project.

At a glance

Residential building permit
No general county permit for an ordinary home in unincorporated Robertson County12
Zoning
The county checklist identifies zoning permits, but the standards were not confirmed3
Septic permit
Generally required through the Robertson County OSSF Program65
Septic application fee
$300 residential and $500 commercial, effective September 1, 20257
RV and tiny-home occupancy
County rules could not be confirmed; ask the zoning office before relying on either use3
Subdivision
County plat review applies, while specified city ETJs follow city policies4
Water wells
The groundwater district has exempt-well registration and non-exempt permit paths89
Owner-builder exemption
No county owner-builder exemption was confirmed10

Who to call

Zoning

Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning

Rural addressing, floodplain and zoning permits for Robertson County

(979) 828-6654

Septic permits

Robertson County OSSF Program

OSSF permit applications, instructions, the county OSSF Order and application fees

979-828-6684

[email protected]

PO Box 427, Franklin, Texas 77856

Well permits

Brazos Valley Groundwater Conservation District

Applications to drill or register exempt wells and to drill or operate non-exempt wells in Robertson County

(979) 279-9350

112 West 3rd Street Hearne, TX 77859

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

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

An ordinary single-family home in unincorporated Robertson County does not go through a general county residential building-permit program1. Texas county building authority is limited: fire-code permitting can cover certain commercial, public and larger multifamily buildings in qualifying counties, while residential standards require county adoption and do not authorize prior approval of new residential construction2. That answer is about a general building permit, not every approval connected with a project. Robertson County separately identifies zoning and floodplain permits, regulates subdivision plats, and generally requires OSSF approval for septic work346. Industrialized housing and buildings also fall under a partial statewide code program, so a modular or industrialized project should be checked against that program rather than treated like site-built construction11.

Who issues permits in Robertson County, and how do you reach them?

Robertson County does not publish a general residential building-permit authority for unincorporated land1. For zoning, floodplain questions and a rural address, call Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning at (979) 828-665412. For septic, contact the Robertson County OSSF Program at 979-828-6684 or [email protected]; the county page links the application and instructions13. For a groundwater well, the Brazos Valley Groundwater Conservation District lists exempt-well and non-exempt-well application routes and can be reached at (979) 279-935014. If the project creates a subdivision, start with the county commissioner for the parcel's precinct; the checklist also directs applicants to the County Clerk for subdivision and sewage policies4.

Does Robertson County have zoning?

Robertson County's current subdivision checklist identifies a county contact for zoning permits, rural addressing and floodplain permits3. The available material does not provide the underlying zoning ordinance, districts, setbacks, minimum home size or permit criteria, so call (979) 828-6654 with the parcel and proposed use before buying or designing12. Do not assume that an RV, tiny home, manufactured home, accessory dwelling or temporary campsite is allowed merely because no zoning ordinance is readily available. Subdivision location also matters: plats within the specified extraterritorial jurisdictions of Bremond, Hearne, Calvert or Franklin follow those cities' policies4. A parcel can therefore avoid a general county residential building permit yet still face zoning, floodplain, subdivision or city-ETJ review134.

How do septic permits work in Robertson County?

Robertson County generally requires an OSSF permit before a septic system is constructed, installed, altered, extended or repaired6. The county OSSF Program handles the process, publishes an application and instructions, and can be reached at 979-828-6684 or [email protected]13. The residential application fee is $300 and the commercial application fee is $500 under the schedule effective September 1, 20257. Authorized agents or their designated representatives inspect installation, but the material does not establish recurring inspection of every existing system15. Only 28.2% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation an early feasibility step16. A narrow exemption can apply on at least 10 acres when every condition is satisfied, including the single-dwelling and 100-foot property-line conditions6.

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

We could not confirm a county rule that expressly allows or prohibits living in an RV or tiny home on unincorporated Robertson County land. The county checklist identifies zoning permits, but the reviewed material does not publish the standards or explain how they treat RV occupancy, tiny homes, manufactured homes, accessory dwellings, temporary camping, setbacks or minimum dwelling size3. Ask Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning about the exact parcel and intended occupancy at (979) 828-6654 before relying on either use12. On-site sewage remains separate: off-grid sanitation runs through the OSSF program, and a permit and approved plan are generally required unless every condition of a specific exemption is met17. A tiny home built as industrialized housing may also be governed by the statewide industrialized-building code program11.

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

  1. Confirm that the parcel is unincorporated and ask Rural Addressing, Floodplain and Zoning whether the site or proposed use needs one of its permits12.
  1. If land is being divided, contact the precinct commissioner and resolve county plat review or the applicable city-ETJ policy4.
  1. Arrange the septic site evaluation early because only 28.2% of county soils rate without severe limits for a conventional drain field16.
  1. Submit the OSSF application before septic construction and budget the $300 residential fee unless every condition of an exemption is met67.
  1. For a well, use the groundwater district path that matches the well classification89.
  1. If access connects to a state highway, submit Form 1058 to TxDOT and wait for an executed permit before right-of-way work18.

What should you check before buying land in Robertson County?

Start with jurisdiction and access: determine whether the tract is unincorporated, lies in a named city ETJ, needs subdivision review, or fronts a state highway419. Ask the county zoning and floodplain office about parcel-specific permits because its checklist names both functions without supplying the controlling standards312. Test wastewater feasibility early; only 28.2% of county soils rate without severe limits for a conventional drain field16. Domestic or livestock wells incapable of producing more than 50,000 gallons per day fall within the district's exempt-well classification, but the district still provides an application to drill or register that well8. Qualifying agricultural land may receive productivity-value appraisal after the required agricultural or timber history, but that tax treatment is not an exemption from septic, subdivision or development rules20.

Watch-outs

  • Robertson County's checklist names zoning permits, but we could not confirm the ordinance, standards or permit triggers; ask the zoning office before treating rural land as unrestricted312.
  • A city-ETJ subdivision can follow Bremond, Hearne, Calvert or Franklin policy even when the land is outside city limits4.
  • County-road driveway requirements and detailed floodplain-development terms could not be confirmed; ask the precinct commissioner about access and the floodplain office about mapped flood hazard12.

Sources

  1. Robertson County official website (2026 county census)
  2. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  3. Robertson County Subdivision Policy Check-off List, quoted and re-checked
  4. Robertson County Subdivision Policy Check-off List, quoted and re-checked
  5. Robertson County OSSF (2026 county census)
  6. Robertson County OSSF, quoted and re-checked
  7. OSSF, quoted and re-checked
  8. Permits & Affidavits, quoted and re-checked
  9. Permits & Affidavits, quoted and re-checked
  10. (2026 county census)
  11. Industrialized Housing and Buildings – Adoption of New Code Editions (Texas statewide rule), quoted and re-checked
  12. Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning (co.robertson.tx.us)
  13. Robertson County OSSF Program (co.robertson.tx.us)
  14. Brazos Valley Groundwater Conservation District (brazosvalleygcd.org)
  15. How to Become a Texas On-Site Sewage Facility (Septic System) Authorized Agent, quoted and re-checked
  16. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  17. Robertson County OSSF, quoted and re-checked
  18. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  19. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  20. Agricultural, Timberland and Wildlife Management Use Special Appraisal, quoted and re-checked

Written September 28, 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.

Found land here? Start a Property Hunt →

County locator

Robertson County in Texas

82
County map
Robertson County highlighted among the Texas counties · colored by Index score

How Robertson County scores

Seclusion79100% ev.
Self-Sufficiency55100% ev.
Admin Boringness8290% ev.
Durability56100% ev.
Property Autonomy71100% ev.
Carry Cost75100% 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 →

$287kTypical home
0.9%Property tax
$3,500Land / acre
40.5"Annual rain
17.3% of yrsSevere drought
38.4 / yr (+24.6)Mid-century 100°F days
21.8 daysMid-century dry spell
2.2" (+5.6%)Mid-century 1-day rain
1.4×Wildfire change factor
100%Forward climate coverage
$1,926Home insurance / yr
1.5% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,309People within 30 min
1,747,743People within 2 hr
11,742Radius comparison (15 mi)
20.2People / sq mi
0%Federal land
99.8%Land at 15% slope or less
28.2%Septic soil without severe limits
150,607 acWorkable land screen
27.4%Wooded land
23 tonsBiomass / forest ac
67.1°FAvg temp

Scout Robertson County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Robertson County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Answers from the rulebook for Robertson County

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

Robertson County rules

  • Local zoningPresent (with conditions)

    County zoning-permit administration associated with subdivision and land-development review in Robertson County.

    • Subdivisions located within the extraterritorial jurisdictions of Bremond, Hearne, Calvert, or Franklin follow the policies of those cities.
    • The source identifies zoning permits and a county contact but does not provide the underlying zoning ordinance, district standards, or permit criteria.
    “Contact Diana Ferrell for Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning permits at (979) 828-6654”
  • Zoning districts · by state lawNo county rule

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us.

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

    On-site sewage facility permitting and administration in Robertson County, Texas.

    • Robertson County publishes an OSSF department contact and a county OSSF Order.
    • The county page identifies the OSSF Order as effective September 1, 2025.
    “Beginning September 1, 2025, the permit application fee for Residential OSSF systems will be $300.00 and the permit application fee for Commercial OSSF systems will be $500.00. Please make all remittance payable to Robertson County.”
  • Septic permitRequired

    Constructing, installing, altering, extending, repairing, or operating an OSSF in Robertson County, Texas.

    • A permit is generally required before OSSF construction, installation, alteration, extension, or repair.
    • An OSSF may be exempt under the state 10-acre rule if all listed requirements are met: licensed site evaluation or professional-engineer evaluation; single-family dwelling on a tract of at least 10 acres; no nuisance or groundwater pollution; all OSSF parts at least 100 feet from the property line; effluent disposed of on the property; and the single-family dwelling is the only dwelling on the tract.
    • Emergency repairs listed by TCEQ do not require a permit but must be reported in writing to the permitting authority within 72 hours after repairs begin.
    • Grandfathered systems may be exempt if the stated pre-authorization or pre-September 1, 1989 installation and condition requirements are met.
    • Beginning September 1, 2025, Robertson County lists a $300 residential OSSF permit application fee and a $500 commercial OSSF permit application fee.
    • Local permitting programs may be more stringent than state minimums.

    residential OSSF permit application fee: 300 USD (Beginning September 1, 2025) · commercial OSSF permit application fee: 500 USD (Beginning September 1, 2025)

    “A permit is required to construct, install, alter, extend, or repair an OSSF. Always check with your local permitting authority. Local permitting programs can be more stringent than State minimums.”
  • Off-grid sanitationLimited

    Off-grid domestic sewage treatment through an on-site sewage facility in Robertson County, Texas.

    • Off-grid sanitation is addressed through the OSSF program rather than a general exemption from wastewater regulation.
    • A permit and approved plan are generally required before construction, installation, alteration, extension, repair, or operation.
    • The state 10-acre exemption and emergency-repair exception apply only when all stated conditions are satisfied.
    • Robertson County lists an OSSF Order effective September 1, 2025 and county permit application fees beginning that date.
    “Permits are required for on-site sewage facilities (OSSFs) including septic systems and holding tanks. A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.”
  • Well permitRequired

    Groundwater wells in Robertson County within the Brazos Valley Groundwater Conservation District that do not qualify for an exempt-well classification.

    • The District lists a permit application pathway to drill or operate a non-exempt well.
    • The listed non-exempt permit term is one year or five years.
    • The District's 2026 fee schedule lists operating and drilling/operating application fees of $100.00 per well within the application.
    • The cited District page classifies domestic or livestock wells above the 50,000-gallon-per-day capacity threshold and other-beneficial-use wells above the 25,000-gallon-per-day capacity threshold outside the stated exempt classifications.

    permit term: 1 or 5 years · operating application fee: 100 USD per well within the application (2026 fee schedule) · drilling/operating application fee: 100 USD per well within the application (2026 fee schedule)

    “A $100 fee is due upon submittal of this application for each well requested.”
    One more reviewed finding on this topic
    • Limited — Groundwater wells in Robertson County within the Brazos Valley Groundwater Conservation District that fall within the District's exempt-well classifications.
      “incapable of producing more than 50,000 gallons of groundwater per day. [...] incapable of producing more than 25,000 gallons of groundwater per day.”
  • Subdividing landRegulated (with conditions)

    Subdivision plats in Robertson County, subject to municipal extraterritorial-jurisdiction policies where specified.

    • Plat requirements pertaining to on-site facilities information must be approved by the Robertson County OSSF Department a minimum of seven (7) days before submittal to Commissioners Court.
    • The 9-1-1 Rural Addressing department must be contacted before submitting road names to Commissioners Court for approval.
    • Plat size must be 24 inches by 36 inches with a reduced legal-size plat; three original blueline or blackline plats and two reduced paper copies are required.
    • A current title report and original current tax certificate are required.
    • Subdivisions within the one-mile ETJ of Bremond, Hearne, Calvert, or Franklin follow the policies of those cities.
    • If a road is dedicated to the county, the developer must return to Commissioners Court after completion; the commissioner inspects the road, followed by a two-year waiting period before possible county acceptance into the County Inventory.
    “Robertson County Subdivision Policy Check -off List January 2025 [...] For all other information regarding form, content and other requirements, refer to Policy.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision plat review and filing for land in unincorporated Robertson County, subject to municipal extraterritorial-jurisdiction rules.
      “Plat requirements pertaining to on-site facilities information must be approved by this department a minimum of seven (7) days prior to submittal to Commissioners Court. [...] Final Plat Filing fee must be paid to the Robertson County Clerk's office at the time of filing. The filing fee will be $120.00.”
  • Permit feesPublished

    Residential and commercial on-site sewage facility permit applications administered by Robertson County

    • The stated fees begin September 1, 2025.
    • Remittance is payable to Robertson County.
    • The residential and commercial amounts apply to OSSF permit applications, not necessarily to every county permit type.

    residential OSSF permit application fee: 300 USD · commercial OSSF permit application fee: 500 USD · fee effective date: 2025-09-01

    “Beginning September 1, 2025, the permit application fee for Residential OSSF systems will be $300.00 and the permit application fee for Commercial OSSF systems will be $500.00. Please make all remittance payable to Robertson County.”
  • Building permitNot required

    Texas counties cannot require residential building permits in unincorporated areas and Robertson County publishes no building-permit program.

    Robertson County official website ↗Scouted from the county site, not yet independently re-checked

  • County-wide zoningAbsent

    Texas counties generally lack zoning authority in unincorporated areas; Robertson County publishes no zoning ordinance.

    Robertson County official website ↗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:”
  • Certificate of occupancyRequired

    Industrialized housing and buildings subject to a local building official and locally adopted rules and regulations, including installations within a municipality or other jurisdiction with local building-official authority.

    • A building or structure may not be used or occupied until the local building official has issued a certificate of occupancy in accordance with locally adopted rules and regulations.
    • The local building official issues the certificate after inspecting the industrialized house or building and finding no violations of the applicable code or other laws enforced by the department of building safety.
    • A local building official may issue a temporary certificate of occupancy in accordance with locally adopted rules and regulations.
    • For installations outside a municipality or within a municipality without an inspection department, the installation instead must comply with Texas Occupations Code, Chapter 1202 and 16 Texas Administrative Code, Chapter 70; the cited state material does not establish a rural certificate-of-occupancy requirement.
    “until the local building official has issued a certificate of occupancy in accordance with the locally adopted rules and regulations.”
  • 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.”
    One more reviewed finding on this topic
    • Limited — Inspection of OSSF installations by Texas authorized agents or designated representatives, including systems issued an authorization to construct.
      “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.”
  • Agricultural exemptionAvailable (with conditions)

    Texas agricultural special appraisal for qualifying agricultural land in Robertson County.

    • The land must be currently devoted principally to agricultural use.
    • Agricultural use must meet the degree of intensity generally accepted in the area.
    • The land must have been devoted to agricultural or timber production for at least five of the past seven years.
    • The rule concerns special property-tax appraisal, not a general exemption from county subdivision, building, septic, or other development requirements.
    • Applications for open-space agricultural appraisal use Form 50-129; applications for 1-d agricultural appraisal use Form 50-165.

    Required agricultural or timber production history: 5 years of the past 7 years (The Comptroller page states additional criteria for land within an incorporated city or town.)

    “The Texas Constitution and Tax Code provide that certain kinds of farm and ranch land be appraised based on the land's capacity to produce agricultural products (productivity value) instead of at market value. Land owners can apply for special appraisal based on the property's productivity value.”
  • Driveway accessRequired

    New or modified access driveways connecting property to a Texas state highway right of way.

    • A local public agency may receive access driveway permitting authority for state highways, but TxDOT approval remains required for drainage impacts on the state highway system before local approval.
    • No access driveway is permitted within a flared or widened right-of-way section at an intersection of a state highway with another highway, road, or street.
    • All entrances and exits, including radii, must be confined within the permittee's property frontage.
    • One-way 45-to-90-degree driveways are permitted for connections to one-way frontage roads or lane-divided highways; otherwise the driveway angle must be 75 to 90 degrees.
    • ADAAG and Texas Accessibility Standards apply.

    private residential driveway maximum width: <= 24 feet (Except as increased by permissible radii.) · driveway-to-pavement radius: >= 15 feet

    “A driveway must be constructed in accordance with a fully executed driveway permit”
  • Permit processPublished (with conditions)

    Constructing a new driveway or revising an existing driveway on the right of way of a Texas state highway.

    • The applicant should contact the local District TxDOT office.
    • The applicant must submit Form 1058, Permit to Construct Access Driveway Facilities on Highway Right of Way.
    • The application must be for the bona fide purpose of securing or changing access to the owner's property, not parking or servicing vehicles on state highway rights of way.
    • No construction may begin on the right of way until a fully executed driveway permit is received and the applicant gives TxDOT 24-hour notification.
    • The driveway must comply with the executed permit and applicable regulations; TxDOT inspection must find construction satisfactory.
    • Where a local public agency has permitting authority, drainage impacts on the state highway system still require TxDOT approval before local approval.
    • Driveway geometrics, utilities, environmental requirements, wetlands considerations, ADAAG, TAS, and other applicable state and federal laws must be considered.

    required form: Form 1058, Permit to Construct Access Driveway Facilities on Highway Right of Way · advance notification: 24 hours (Notification to TxDOT is required before construction on the right of way.) · private residential driveway maximum width: <= 24 feet (Except as increased by permissible radii.) · minimum driveway radius to highway pavement: >= 15 feet

    “The applicant shall complete and submit to TxDOT a Form 1058”
  • 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.

  • Owner-builder exemption — Any owner-builder exemption from a Robertson County residential building permit, building inspection, or certificate-of-occupancy requirement in unincorporated areas
  • Inspections — Residential, commercial, and other construction in Robertson County, including unincorporated areas
  • Mandatory utility hookup — Water or sewer connection requirements for property and residential development in Robertson County, Texas.
  • Building in a floodplain — Development in floodplain areas of Robertson County
  • Short-term rentals — Short-term rental use in Robertson 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 Robertson County, Texas

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

Robertson County scores 82/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and sparse surroundings — about 1,309 people within a 30-minute drive.

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

Robertson County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Robertson County OSSF Program (TCEQ authorized agent). 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 Robertson County?

Living in an RV on your own land in Robertson County is allowed: Unincorporated Robertson County: no county rule sets this, because Texas law gives zoning power only to certain counties, and Robertson County has no zoning ordinance. The county legal census found no county zoning ordinance, citing co.robertson.tx.us. Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits. Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Robertson County, Texas?

Land in Robertson County runs about $3,500 per acre, based on the latest county data.

What is the water situation in Robertson County?

Robertson County gets about 40.5" of rain a year, with severe drought in roughly 17.3% of years.

How remote is Robertson County?

A representative private-land location has about 1,309 people within a 30-minute drive and 1,747,743 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

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

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

How Robertson compares in Texas

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