Off-grid site report
Sutton County, TX
30.5698, -100.5874 · 2,320 ft elevationRead this before you act on anything below. This is my researched starting point for Sutton 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 rulesSutton County, TX
Zoning & raw-land occupancy
Unclear - verifyTexas counties, including Sutton, have no general zoning authority over unincorporated land, a statewide structural limit. The county maintains subdivision regulations for platting, but raw-land occupancy rules were not confirmed. source
Dwellings, tiny homes & RVs
Unclear - verifyNo Sutton County-specific rule on tiny homes, minimum dwelling size, or RV occupancy was found. Texas counties have limited, permissive authority to set residential construction standards but whether Sutton County has used it is not confirmed. source
Building permits & codes
Unclear - verifyNo building code adoption or permit fee page was found on the county's official site. Texas has no statewide building code, so this is a county-by-county choice that isn't confirmed here. source
Septic & composting toilets
Generally allowedSutton County requires septic systems to be permitted for groundwater protection, coordinated with the Sutton County Underground Water Conservation District under the statewide TCEQ OSSF program. Whether the county self-administers or routes through TCEQ regionally is not confirmed. source
Greywater reuse
Unclear - verifyNo separate Sutton County or TCEQ greywater ordinance was found; it likely falls under general OSSF septic rules, but this is not confirmed specifically for the county.
Rainwater harvesting
Generally allowedNo Sutton County restriction was found, and the state (via the Texas Water Development Board) generally encourages rainwater harvesting.
Private wells & water rights
RestrictedThe entire county lies within the Sutton County Underground Water Conservation District, which requires pre-drilling notice and review for all wells, including exempt domestic/livestock wells, under Texas Water Code Chapter 36 authority. source
Living disconnected from utilities
Unclear - verifyNo county ordinance mandating utility connections in unincorporated Sutton County was found; any such rule would more likely apply inside the city of Sonora, which was not researched here. source
Sun30-year normals
- Peak-sun hours, annual average
- 5.8 hrs/day
- Worst month (sizes an off-grid array)
- 4.8 hrs/day
- Yearly output per 1 kW of panels
- 1,630 kWh
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Weather1991-2020
- Precipitation
- 23 in/yr
- Snowfall
- 0 in/yr
- Heating degree days
- 2,533 (mild)
How far help isstraight-line
- Hospital
Lillian M. Hudspeth Memorial Hospital - 2.8 mi
- Fire station
- none within range
- Hardware store
Parker Lumber - 3.3 mi
- Grocery
Lowe's Market - 3.4 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 76950).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Sutton 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.