Unincorporated Brown County, Texas has no zoning ordinance and no adopted building code, so there is no plan review against a code and no building inspector1. There is still a real permit to get: a county Development Permit is required before any construction, placement of structures, dredging, altering land or waterways, or placing fill anywhere in the county, for a $20 fee23. Septic systems need a separate $210 OSSF permit on tracts of 10 acres or less, both handled by the Brown County Permit Office in Brownwood4.
At a glance
- Development permit
- Required before any construction, structure placement, or land-disturbing work; $20 fee; no building code or inspector enforces construction quality23
- Zoning
- No county zoning in unincorporated areas; the City of Brownwood zones its own limits15
- Septic
- OSSF permit required for tracts of 10 acres or less ($210, two inspections included); registration only for larger tracts4
- RVs at Lake Brownwood
- Only temporary parking in the flood hazard area: under 180 days, highway-ready, no permanent additions6
- Manufactured home
- Must be installed to Texas Department of Housing and Community Affairs standards statewide7
- Driveway on a state highway
- TxDOT Form 1058 driveway permit required before construction in the right-of-way8
Who to call
Septic permits
Brown County Permit Office (OSSF / Septic Permitting)
OSSF (septic) permits and registrations for Brown County, issued by the county's Inspector/Designated Representative
200 S Broadway, Rm. 322, Brownwood, TX 76801
Floodplain permits
Brown County Permit Office (Development & Floodplain Permitting)
Development permits (construction, structure placement, dredging, fill) and floodplain/Lake Brownwood flood-hazard-area permitting for Brown County
200 S Broadway, Rm. 322, Brownwood, TX 76801
Contact details are copied from each office’s official page and were checked against it on September 24, 2026.
Do you need a building permit in Brown County, Texas?
Not a building permit in the code-enforcement sense: Brown County has adopted no building code, so no county inspector reviews your plans against the International Residential Code or checks your framing, electrical or plumbing9. That does not mean construction is unregulated. Brown County requires a Development Permit, for a $20 fee, before any type of construction, placement of structures, dredging, altering of land or waterways, or placing fill anywhere in the county23. Applying takes a legal plat of the property, a 911 address, the permit fee, and, if your site is in a flood area, planning materials for the project10. Texas law lets some counties adopt fire codes and residential building-code standards for unincorporated construction, but only once a county's population passes 250,000 or it sits next to one that has; Brown County's own population of about 38,709 is far under that threshold, and nothing in the official sources reviewed shows the county has adopted such standards anyway1112.
Who issues permits in Brown County, and how do you reach them?
One office handles it all: the Brown County Permit Office, reached through the county's Inspector/Designated Representative, issues both the Development Permit and the OSSF (septic) permit13. You can find its address, phone number and application forms on the county's Permitting page, and permits themselves are picked up in person at the office6. There is no separate zoning or planning department to contact, because unincorporated Brown County has no zoning1. If your land is inside the City of Brownwood instead, zoning, home-occupation rules and any building-code questions go to the city, not the county14.
Does Brown County have zoning?
No, not outside its cities. Texas counties lack general zoning authority in unincorporated areas, and Brown County's permitting page shows no zoning program15. That means minimum dwelling size, minimum lot size, setbacks, lot coverage, building height, zoning districts, accessory dwellings, and where you place an RV, tiny home or manufactured home all have no county-level rule in unincorporated Brown County5. Inside the City of Brownwood, the opposite applies: zoning there regulates land use, structure type, setbacks, required parking, minimum yards and minimum lot size across the city's zoning districts14. A manufactured home is a partial exception even outside city limits: Texas law requires installed manufactured housing to comply with Texas Department of Housing and Community Affairs standards and rules regardless of local zoning, and an uninstalled home may only be occupied to view it on a retailer's lot7.
How do septic permits work in Brown County?
An OSSF (on-site sewage facility) permit is required before installing a new septic system, or modifying or repairing an existing one, on a tract of 10 acres or less; tracts over 10 acres instead need registration with a site evaluation, layout and legal description4. The permit fee is $210 and includes two inspections, with additional inspections at $50 each, while registration on a larger tract runs $253. An authorization to construct is only good for one calendar year: if the installer does not request a construction inspection within that year, you have to reapply and pay the fee again15. Soils are the real planning constraint in Brown County: only about 5.9% of the county's soils are rated free of severe limits for a conventional septic drain field, so expect most sites to need an engineered or alternative system and budget the site evaluation into your timeline early16.
Can you live in an RV or tiny home on your land in Brown County?
Outside the Lake Brownwood flood hazard area, there is no county zoning rule restricting where you place an RV or tiny home on your own land, because unincorporated Brown County has no zoning ordinance5. Inside the flood hazard area around Lake Brownwood, the county enforces a specific, different rule: an RV may only be temporarily parked there, and must be onsite for less than 180 days, fully licensed and ready for highway use, with no permanently attached additions6. That flood-hazard rule is narrower than a general county RV ordinance; it is tied specifically to the Lake Brownwood impoundment area under the county's flood-damage-prevention order, so confirm with the Permit Office whether your parcel falls inside that mapped area before assuming it applies6. A manufactured home you place anywhere in the county, flood hazard area or not, still has to meet statewide TDHCA installation standards7.
Building a home in Brown County: the steps, in order
- Confirm your parcel is outside Brownwood or another incorporated city; inside city limits you need a municipal permit and must follow that city's own zoning instead of this county-level guide14.
- Apply for the county's Development Permit before any construction, structure placement, or land-disturbing work begins, with a legal plat, 911 address and the $20 fee ready23.
- If any part of your site is in a flood area, include the required planning materials with your Development Permit application and budget for the $100 floodplain inspection fee, which covers two inspections10.
- Apply for your OSSF (septic) permit if your tract is 10 acres or less, with a soil evaluation, system layout, legal plat and 911 address on hand; larger tracts register instead4.
- Wait for the county's authorization to construct and request your inspection within one calendar year, or you will need to reapply and pay again15.
- If your driveway will connect to a state highway, submit TxDOT Form 1058 to the local district office and get a fully executed permit before starting work in the right-of-way8.
- If you are installing a manufactured home, confirm it is installed to Texas Department of Housing and Community Affairs standards regardless of where in the county it sits7.
What to check before you buy land in Brown County
Septic and soils: with only about 5.9% of Brown County's soils rated free of severe limits for a conventional drain field, get a site evaluation before assuming a standard system will work, and budget for the $210 OSSF permit either way163. Flood: check whether your parcel sits in the Lake Brownwood flood hazard area, since that triggers both a stricter RV-parking rule and a $100 floodplain inspection fee on top of the ordinary Development Permit10. Access: a driveway onto a state highway needs a TxDOT permit, with a private residential driveway capped at 24 feet wide and at least a 15-foot radius where it meets the pavement17. Drought: Brown County has spent about 25.6% of recent years in severe drought, worth weighing for any well, pond or garden plans18. Taxes: the effective property tax rate runs about 1.2%, with a median annual bill near $1,7271920.
Watch-outs
- Brown County's Development Permit requirement is a real, countywide permit for any construction or land-disturbing work, even though the county has no adopted building code or inspector; do not assume 'no building code' means 'no permit needed' here2.
- Certificate of occupancy, owner-builder exemptions, building inspections, driveway access on county (not state) roads, short-term rentals, and well permits are unconfirmed for Brown County in the official sources reviewed for this guide; ask the Permit Office directly before assuming any is required or waived13.
- The 180-day RV rule described here applies specifically to the mapped Lake Brownwood flood hazard area, not to the whole county; confirm with the Permit Office whether a specific parcel falls inside that area6.
Sources
- Brown County Permitting (2026 county census)
- Permitting, quoted and re-checked
- Lake Brownwood permitting pamphlet, quoted and re-checked
- Lake Brownwood Permit Pamphlet, quoted and re-checked
- Texas law on county zoning and building authority
- Brown County Permit Office (Development & Floodplain Permitting) (browncountytx.gov)
- Occupations Code Chapter 1201, Manufactured Housing, quoted and re-checked
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
- Brown County Permitting (2026 county census)
- Lake Brownwood permitting pamphlet, quoted and re-checked
- Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
- County population: Bolthole Index county data
- Brown County Permit Office (OSSF / Septic Permitting) (browncountytx.gov)
- Zoning, quoted and re-checked
- OSSF Permit Application Packet, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
- Share of years in severe drought: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.