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 prior county approval before new residential construction under the conditional state framework, and no general county residential building-permit program is published12. Robertson County separately administers zoning permits, subdivision review and septic permits; city policies govern subdivision plats in the named city extraterritorial jurisdictions, while septic stays with the county OSSF Program345.

At a glance

Residential building permit
No general county permit for an ordinary home in unincorporated Robertson County26
Zoning
The county lists zoning permits, but the standards and criteria are not published3
Septic permit
Generally required through the Robertson County OSSF Program75
Septic application fee
$300 residential and $500 commercial, effective September 1, 20258
RV and tiny-home occupancy
No county rule confirmed (the county appears to have no zoning ordinance); septic and floodplain rules remain separate910
Subdivision
County plat review applies, while specified city ETJs follow city policies11
Water wells
The groundwater district has exempt-well registration and non-exempt permit paths1213
Owner-builder work
A narrow state notice-penalty protection may apply to a self-built primary residence; it is not a general permit exemption14

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

robco.drep@co.robertson.tx.us

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 October 9, 2026.

Off-grid gear

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

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

An ordinary single-family home in unincorporated Robertson County does not go through a general county residential building-permit program2. Even where a Texas county adopts the conditional state residential-construction framework, that framework does not authorize prior county approval before new residential construction begins1. That answer concerns a building permit, not every approval tied to a project: Robertson County separately regulates subdivision plats, lists zoning permits and generally requires a septic permit for OSSF work437. The state owner-builder provision is narrow: for a person building or acting as contractor on an intended primary residence, it conditionally protects against a notice penalty rather than creating a general exemption from standards, inspections, septic rules, subdivision rules or municipal requirements14.

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

Robertson County does not publish a general residential building-permit authority for unincorporated land2. For a zoning permit, floodplain question or rural address, call Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning at (979) 828-665415. Inside a city, ask that city's building department about its building permit and zoning approval; for subdivision plats in the named city extraterritorial jurisdictions, city policies apply4. Septic permits do not shift to those city departments: the Robertson County OSSF Program administers septic permits countywide and publishes the application and instructions516. For a groundwater well, the Brazos Valley Groundwater Conservation District lists exempt-well and non-exempt-well application routes17.

Does Robertson County have zoning?

Robertson County identifies a county contact for zoning permits associated with subdivision and land-development review, but the available material does not publish an underlying zoning ordinance, districts or permit criteria3. Unincorporated Robertson County appears to have no county zoning ordinance, and we could not confirm any county rule on minimum dwelling size, minimum lot size, setbacks, lot coverage or building height918. Ask Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning whether the proposed use needs zoning approval or floodplain review before fixing a site plan15. Subdivision location matters: plats within the specified extraterritorial jurisdictions of Bremond, Hearne, Calvert or Franklin follow those cities' policies, while the Robertson County OSSF Program continues to handle septic permits countywide45.

How do septic permits work in Robertson County?

Robertson County administers OSSF permitting and generally requires a septic permit before a system is constructed, installed, altered, extended or repaired57. The Robertson County OSSF Program publishes its OSSF Order, permit application and application-process instructions16. The residential application fee is $300 and the commercial application fee is $500 under the schedule effective September 1, 20258. Authorized agents or their designated representatives inspect installation, but the material does not establish recurring inspection of every existing system19. Only 28.2% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation an early feasibility step20. A narrow exemption can apply on at least 10 acres when every condition is satisfied, including the single-dwelling and 100-foot property-line conditions7.

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

We could not confirm a general county zoning rule on RV occupancy, tiny-home occupancy, accessory dwellings, manufactured-home occupancy or temporary camping on unincorporated Robertson County land, and the county appears to have no zoning ordinance9. Because Robertson County nevertheless lists zoning permits without publishing their criteria, ask Rural Addressing, Floodplain and Zoning about the specific parcel and proposed use315. Private deed restrictions, municipal rules and floodplain review can also affect a project. Septic remains separate from zoning: off-grid sanitation runs through the Robertson County OSSF Program, and a septic permit and approved plan are generally required unless every condition of a specific exemption is met105. A tiny home built as industrialized housing falls under the statewide industrialized-building program, and a purchaser acquiring an industrialized unit for personal use may need an installation permit2122.

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

  1. Confirm whether the parcel is unincorporated, then ask Rural Addressing, Floodplain and Zoning about a zoning permit, rural address and floodplain review315.
  1. If land is being divided, contact the precinct commissioner and resolve county subdivision-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 field20.
  1. Follow the published OSSF application process before septic construction and budget the $300 residential fee unless every condition of an exemption is met167.
  1. For a well, use the groundwater district path that matches the well classification1213.
  1. If access connects to a state highway, submit Form 1058 to TxDOT and wait for an executed driveway permit before right-of-way work23.

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-plat review, or fronts a state highway424. Ask the county office whether a zoning permit, rural address or floodplain review applies to the parcel315. Test wastewater feasibility early; only 28.2% of county soils rate without severe limits for a conventional drain field20. 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 well12. 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 rules25.

Watch-outs

  • No general county zoning rule limiting the listed rural uses is confirmed, but Robertson County publishes a zoning-permit contact whose standards are not available; ask that office about the parcel9315.
  • A city-ETJ subdivision can follow Bremond, Hearne, Calvert or Franklin policy even when the land is outside city limits; county septic permitting remains separate45.
  • 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 hazard15.

Sources

  1. Texas Local Government Code Chapter 233, quoted and re-checked
  2. Robertson County official website (2026 county census)
  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, quoted and re-checked
  6. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
  7. Robertson County OSSF, quoted and re-checked
  8. OSSF, quoted and re-checked
  9. Robertson County official website (2026 county census)
  10. Robertson County OSSF, quoted and re-checked
  11. Robertson County Subdivision Policy Check-off List, quoted and re-checked
  12. Permits & Affidavits, quoted and re-checked
  13. Permits & Affidavits, quoted and re-checked
  14. Texas Local Government Code Chapter 233, quoted and re-checked
  15. Robertson County 9-1-1 Rural Addressing, Floodplain and Zoning (co.robertson.tx.us)
  16. OSSF, quoted and re-checked
  17. Brazos Valley Groundwater Conservation District (brazosvalleygcd.org)
  18. Morales Letter Opinion No. 97-085 (Texas statewide rule), quoted and re-checked
  19. How to Become a Texas On-Site Sewage Facility (Septic System) Authorized Agent, quoted and re-checked
  20. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  21. Industrialized Housing and Buildings – Adoption of New Code Editions (Texas statewide rule), quoted and re-checked
  22. tdlr.texas.gov (Texas statewide rule), quoted and re-checked
  23. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  24. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  25. Agricultural, Timberland and Wildlife Management Use Special Appraisal, quoted and re-checked

Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

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

RuleRobertson CountyBrazos CountyFalls CountyMilam CountyLimestone CountyMadison CountyBurleson County
Building permitNot requiredLimitedNot requiredNot requiredNot requiredNot requiredLimited
County zoningNoNoNoNoNoNoNo
Septic permitsCounty OSSF ProgramCounty Health Dept.Falls CountyCounty Health Dept.County OSSFMadison CountyCounty Env. Office

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%Soils rated "not limited" for septic (strict USDA rating)
150,607 acWorkable land screen
27.4%Wooded land
23 tonsBiomass / forest ac
67.1°FAvg temp

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Cities and towns in Robertson 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.

Bremond · Calvert · Franklin · Hearne

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”
  • 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.”
  • Permit processPublished (with conditions)

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

    • The residential OSSF permit application fee is $300.00 beginning September 1, 2025.
    • The commercial OSSF permit application fee is $500.00 beginning September 1, 2025.
    • Remittance must be payable to Robertson County.
    • The county publishes an OSSF Order, permit application, and application-process instructions.

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

    “The Application for Robertson County OSSF Permit can be found here: OSSF Application.docx Below are helpful instructions regarding the OSSF application process: OSSF Instructions.docx”
  • 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 permitNot required

    New residential construction in an unincorporated county subject to Texas Local Government Code Chapter 233, Subchapter F.

    • The county must have adopted a resolution or order requiring application of Subchapter F.
    • The construction must qualify as new residential construction under Section 233.151, including a single-family house or duplex on a vacant lot or an addition increasing square footage or value by more than 50 percent.
    • This rule does not authorize county zoning regulations.
    • Municipal building codes in a municipality's extraterritorial jurisdiction control over Subchapter F standards.
    • Chapter 232 subdivision requirements may control in a conflict.
    • This provision does not establish that Robertson County adopted the required resolution or order.
    “This subchapter may not be construed to: (1) require prior approval by the county before the beginning of new residential construction;”
    One more reviewed finding on this topic
    • Limited — Industrialized housing or buildings installed in Texas, including purchasers or lessees acquiring a unit for their own or their company’s use.
      “A person who is a retailer of industrialized housing or buildings, or who is responsible for the assembly, connection, and on-site construction and erection of an industrialized house or building for persons other than themselves, must be registered as an industrialized builder. Subcontractors do not require the registration unless required by other applicable state laws. For example, electricians, HVAC contractors, and plumbers must be licensed in accordance with the applicable state law. If you are purchasing or leasing an industrialized house or building for your own use, or your company's use, you may file for an installation permit in lieu of registering as an industrialized builder.”
  • Owner-builder exemptionConditional

    An individual building new residential construction covered by Texas Local Government Code Chapter 233, Subchapter F, or acting as the individual's own contractor, when the individual intends to use the residence as the individual's primary residence.

    • The county must be subject to Subchapter F through a resolution or order and the statutory applicability requirements.
    • The protection applies to failure to provide notices under Sections 233.154(b) and (c); it is not a general exemption from building standards, inspections, septic requirements, subdivision rules, or municipal requirements.
    • The individual must build the construction or act as the individual's own contractor.
    • The individual must intend to use the residence as the individual's primary residence.
    “An individual who fails to provide proper notice in accordance with Sections 233.154(b) and (c) is not subject to a penalty under this subsection if: (1) the new residential construction is built by the individual or the individual acts as the individual's own contractor; and (2) the individual intends to use the residence as the individual's primary residence.”
    2 more reviewed findings on this topic
    • Conditional — An owner performing electrical, plumbing, or air-conditioning and refrigeration work on the owner's own residence or homestead in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed as electricians.”
    • Conditional — Electrical work on a dwelling owned and occupied by the property owner in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed”
  • Building code adoptedPartial

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

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

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

    “July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
    One more reviewed finding on this topic
    • Partial — Industrialized housing and buildings, modules, and modular components built for Texas under the Industrialized Housing and Buildings program.
      “Effective July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
  • 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.”
    2 more reviewed findings 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.”
    • Limited — OSSFs using secondary treatment or drip irrigation in Texas.
      “A system using secondary treatment or drip irrigation must be inspected by a valid maintenance company once every four months, or be maintained by the single family homeowner, where allowed.”
  • 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”
  • county zoning authorityLimited

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

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

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

    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
    One more reviewed finding on this topic
    • Limited — County zoning authority over unincorporated land in Texas, where a specific statutory grant applies.
      “As you suggest, a county has very limited and specific zoning authority, and none that may be used to regulate construction or operation of the proposed facility.”
  • county building authorityLimited

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

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

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

    “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code. [...] The fire code applies only to the following buildings constructed in an unincorporated area of the county: (1) a commercial establishment; (2) a public building; and (3) a multifamily residential dwelling consisting of four or more units.”
    One more reviewed finding on this topic
    • Limited — County fire-code adoption and building-permit authority for specified buildings in unincorporated areas of qualifying Texas counties, including multifamily residential dwellings of four or more units.
      “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code.”

Still unanswered

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

  • Inspections — Residential, commercial, and other construction in Robertson County, including unincorporated areas
  • Zoning districts — Countywide publication of zoning districts in Robertson County
  • Minimum dwelling size — Minimum dwelling size in unincorporated Robertson County, Texas.
  • Minimum lot size — Minimum lot size in unincorporated Robertson County, Texas.
  • Setbacks — Building setbacks in unincorporated Robertson County, Texas.
10 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Mandatory utility hookup
  • Building in a floodplain
  • Short-term rentals

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

Living off-grid in 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). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in 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.

How Robertson compares in Texas

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