Off-grid site report
Concho County, TX
31.5085, -99.9199 · 1,627 ft elevationRead this before you act on anything below. This is my researched starting point for Concho 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 rulesConcho County, TX
Zoning & raw-land occupancy
Generally allowedTexas counties, including Concho, have no general zoning power over unincorporated land under state law; no county zoning ordinance was found. source
Dwellings, tiny homes & RVs
Unclear - verifyNo Concho County ordinance on tiny homes, minimum dwelling size, or RV living was found; state baseline applies and septic rules apply regardless of dwelling type.
Building permits & codes
Unclear - verifyNo evidence Concho County has adopted a general building code for unincorporated areas; Texas has no statewide building code. Confirm with the Commissioners Court. source
Septic & composting toilets
Generally allowedConcho County issues its own OSSF (septic) permits following TCEQ rules under Health & Safety Code Ch. 366 and 30 TAC 285; a permit and approved plan are generally required, with a narrow state exemption for large single-family tracts. source
Greywater reuse
Unclear - verifyNo Concho County-specific greywater rule was found; greywater is handled within the state OSSF/30 TAC 285 framework rather than a standalone county program. source
Rainwater harvesting
Generally allowedNo county restriction on rainwater harvesting was found, and the state (Texas Water Development Board) actively encourages the practice. source
Private wells & water rights
Unclear - verifyNo confirmed groundwater conservation district covers Concho County, so the state default rule of capture likely applies; verify current district coverage with TWDB. source
Living disconnected from utilities
Unclear - verifyNo Concho County ordinance requiring connection to electric, water, or sewer utilities was found; any such requirement would more likely come from a town like Eden or Paint Rock.
Sun30-year normals
- Peak-sun hours, annual average
- 5.9 hrs/day
- Worst month (sizes an off-grid array)
- 4.7 hrs/day
- Yearly output per 1 kW of panels
- 1,637 kWh
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Weather1991-2020
- Precipitation
- 25 in/yr
- Snowfall
- 2 in/yr
- Heating degree days
- 2,582 (mild)
- Frost-free season
- Apr 1 to Nov 5
How far help isstraight-line
- Hospital
Ballinger Memorial Hospital - 16.9 mi
- Fire station
Rowena VFD - 12.2 mi
- Hardware store
- none within range
- Grocery
- none within range
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 76866).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Concho 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.