Unincorporated Hood County, Texas does not require a county building permit for a house, but a septic permit and Road Access Permit are required1. Floodplain approval may also apply, and a new well must be registered before drilling1,2. Hood County has special authority to regulate development outside city limits, while Granbury applies its own zoning and building codes inside the city3,4.
Do you need a building permit in Hood County, Texas?
A house on a lot in unincorporated Hood County does not need a Hood County building permit.
A house on a lot in unincorporated Hood County does not need a Hood County building permit1. That narrow answer does not eliminate the other approvals tied to the site: Hood County requires a septic permit from Environmental Health and a Road Access Permit from Road Operations1. If any part of the property lies in a Special Flood Hazard Area, the Floodplain Administrator may require a floodplain development permit before construction or excavation1. A new water well must be registered with the Upper Trinity Groundwater Conservation District before drilling, and district rules determine whether additional approval applies2. An owner-builder may build a home because there is no county building permit to obtain, although state trade-licensing requirements may still apply1.
Who handles building and site permits in Hood County?
For an unincorporated house, there is no Hood County building permit to apply for.
For an unincorporated house, there is no Hood County building permit to apply for1. Hood County Development handles floodplain administration at 1402 W Pearl Street, Suite 2, Granbury, TX 76048, phone 817-408-25157. Hood County Environmental Health handles OSSF septic permits at 5417 Acton Hwy, Granbury, TX, phone 817-579-3288 and email Environmental@hoodcounty.texas.gov8. Hood County Road Operations issues the required Road Access Permit and can be reached at 3640 W Hwy 377, Granbury, TX 76048, phone 817-579-33041,9. The Upper Trinity Groundwater Conservation District handles new-well registration at 1859 W Hwy 199, Springtown, Texas 76082, phone 817-523-52002,10. Inside Granbury, the city requires construction permits and enforces its adopted building codes; county septic authority remains with Hood County Environmental Health4,6.
Does Hood County have zoning?
Hood County has special statutory authority to regulate development in its unincorporated areas, including building size, density, roads, water, wastewater and drainage.
Hood County has special statutory authority to regulate development in its unincorporated areas, including building size, density, roads, water, wastewater and drainage3. The available county material does not establish the complete set of regulations Hood County has adopted, so ask Hood County Development about the parcel's setbacks, minimum home size, allowed uses and district-specific requirements before designing a project3. Rules also change by jurisdiction: a Hood County city may impose additional requirements in its extraterritorial jurisdiction, and Granbury's subdivision ordinance extends into its ETJ5. Inside Granbury, city zoning regulates uses, setbacks, parking, exterior materials, landscaping, trees and lot sizes5. Combining or dividing lots is regulated as well; Hood County directs applicants to replat under its development regulations and submit the required forms to the Development Office1.
How do septic permits work in Hood County?
Every OSSF installation, modification or replacement in Hood County requires a septic permit from Hood County Environmental Health.
Every OSSF installation, modification or replacement in Hood County requires a septic permit from Hood County Environmental Health6,11. Permit and inspection fees are payable to Hood County, which also collects a $10 state pass-through charge for each OSSF permit6. Only 19.1% of Hood County soils are rated without severe limits for a conventional septic drain field, so make the site evaluation an early purchase contingency rather than assuming a standard system will work12. Texas provides a narrow permitting exemption for a single-family home on at least 10 acres only when all conditions are met, including a licensed site evaluation, at least 100 feet between every system component and the property line, on-site effluent disposal, no nuisance or groundwater threat, and no other dwelling on the tract13. Hood County is the local septic authority even for addresses inside a city6.
Can you live in an RV or tiny home on your land in Hood County?
We could not confirm a Hood County rule that permits or prohibits long-term RV occupancy, tiny-home occupancy or temporary camping on unincorporated private land.
We could not confirm a Hood County rule that permits or prohibits long-term RV occupancy, tiny-home occupancy or temporary camping on unincorporated private land. Hood County has statutory power to regulate development outside city limits, so the absence of a county building permit is not proof that every residential use is allowed3. Ask Hood County Development about the specific parcel and proposed use before buying or placing a unit. A mobile home brought to unincorporated property still follows the house site-permit process: septic and road-access approvals are required, while floodplain and well requirements depend on the site1. Near a city, additional ETJ rules may apply, and Granbury has its own zoning within city limits5.
Building a home in Hood County: the steps, in order
Verify that the site is unincorporated; Hood County does not require a county building permit for a house there, while Granbury requires city construction permits.
- Verify that the site is unincorporated; Hood County does not require a county building permit for a house there, while Granbury requires city construction permits1,4.
- Ask Hood County Development which adopted development, subdivision, floodplain or ETJ rules apply to the parcel3,5.
- Apply to Hood County Environmental Health for the OSSF septic permit and complete its site process8,11.
- Obtain the Road Access Permit from Hood County Road Operations1,9.
- If any portion is in a Special Flood Hazard Area, ask the Floodplain Administrator whether a development permit is required before construction or excavation1,7.
- Register a new well with the Upper Trinity Groundwater Conservation District before drilling and confirm any additional district requirements2,10.
- Complete any required replat before dividing or combining lots1.
What to check before you buy land in Hood County
Check wastewater first: only 19.1% of Hood County soils are rated without severe limitations for a conventional septic drain field.
Check wastewater first: only 19.1% of Hood County soils are rated without severe limitations for a conventional septic drain field12. Check water next: a new well must be registered before drilling, and the district's published standards generally call for at least 2 acres, 50 feet from the nearest property line and 150 feet from another registered well unless a variance applies2. Check the flood map because any portion of the parcel in a Special Flood Hazard Area can trigger county review before construction or excavation1. Confirm driveway jurisdiction: a house in unincorporated Hood County requires a county Road Access Permit, while access to a state highway requires state approval1,14. Finally, verify subdivision history and jurisdiction; Hood County regulates replats, Granbury regulates land use within the city, and city ETJ requirements may also affect a parcel1,5.
Watch-outs
- No county building permit is required for an unincorporated house, but we could not confirm the county's building-inspection or certificate-of-occupancy rules; ask Hood County Development before work begins1,7.
- Hood County has special development-regulation authority outside city limits, and city or ETJ rules can add another layer, so do not treat rural land as unrestricted3,5.
- We could not confirm county rules for RV residence, tiny-home occupancy, temporary camping, short-term rentals or agricultural exemptions; ask Hood County Development about the exact parcel and use3,7.
Sources
14 official pages, each quoted and re-checked · written October 7, 2026
- hoodcounty.texas.gov
- uppertrinitygcd.com
- Local Government Code Chapter 231. County Zoning Authority
- Building Inspections, Permits & Code Enforcement
- Texas Local Government Code Chapter 231, Subchapter K: Development Regulations in Hood County
- On-Site Sewage Facilities Order for Hood County, Texas (2026 county census)
- Hood County Floodplain Administrator (Hood County Development) (hoodcounty.texas.gov)
- Hood County Environmental Health Department (hoodcounty.texas.gov)
- Hood County Road Operations (hoodcounty.texas.gov)
- Upper Trinity Groundwater Conservation District (uppertrinitygcd.com)
- On-Site Sewage Facilities (OSSF)
- 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
- Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule)
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule)
Written October 7, 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.
Off-grid gear
Going off-grid in Hood County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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