Off-grid site report
San Augustine County, TX
31.5299, -94.1060 · 407 ft elevationRead this before you act on anything below. This is my researched starting point for San Augustine County, TX, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.
The local rulesSan Augustine County, TX
Zoning & raw-land occupancy
Generally allowedSan Augustine County has no countywide zoning ordinance; Texas counties generally lack zoning authority over unincorporated land. Inside the City of San Augustine, the city may set its own rules, but this is not confirmed from official city sources. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county ordinance on minimum dwelling size, tiny homes, or RV occupancy was found; Texas allows counties limited authority to adopt residential standards but no evidence San Augustine County has done so. Confirm with the county Permits Office.
Building permits & codes
Unclear - verifyThe county Permits Office (via the Commissioner's staff) issues permits, but no adopted building code document was found confirming scope countywide. Ask the Permits Office directly. source
Septic & composting toilets
Generally allowedSeptic (OSSF) permitting for San Augustine County is delegated by TCEQ to the Angelina & Neches River Authority (ANRA), including a special Control Zone Rayburn area. A limited exemption exists statewide for single-family homes on 10+ acres meeting specific site conditions. source
Greywater reuse
Unclear - verifyNo standalone county or ANRA greywater policy was found; it likely falls under the same OSSF framework as septic, but this is not separately confirmed for San Augustine County.
Rainwater harvesting
Generally allowedNo county-specific rainwater harvesting restriction was found; the state's general allowance for rainwater collection appears to apply without local modification.
Private wells & water rights
Unclear - verifySan Augustine County is in Groundwater Management Area 11, but no dedicated groundwater conservation district covering the county was confirmed. Without one, the state's common-law rule of capture likely applies; verify with TWDB. source
Living disconnected from utilities
Varies locallyNo county-level rule requiring utility connection was found for unincorporated areas. The City of San Augustine may have its own requirement inside city limits, but this was not confirmed from official city code text. source
Sun30-year normals
- Peak-sun hours, annual average
- 5.2 hrs/day
- Worst month (sizes an off-grid array)
- 4.0 hrs/day
- Yearly output per 1 kW of panels
- 1,388 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 55 in/yr
- Snowfall
- 0 in/yr
- Heating degree days
- 2,177 (mild)
How far help isstraight-line
- Hospital
CHI St. Luke’s Health Memorial San Augustine - 0.2 mi
- Fire station
- none within range
- Hardware store
- none within range
- Grocery
Brookshire Brothers - 0.8 mi
From OpenStreetMap. Road miles will be longer, often much longer in hill country.
Plan this spot
These open with this location's real numbers already filled in (ZIP 75972).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in San Augustine County, TX?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →Share or save this report:New report
Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 21, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.
New here, or not sure where this fits? Start here walks through the whole thing in order.