Off-grid site report
Edwards County, TX
30.0159, -100.2081 · 2,421 ft elevationRead this before you act on anything below. This is my researched starting point for Edwards 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 rulesEdwards County, TX
Zoning & raw-land occupancy
Generally allowedEdwards County has no general zoning authority; Texas Local Government Code Chapter 232 restricts counties from regulating building use, density, or lot size absent specific state authorization. The county does have Subdivision Regulations governing land platting, a separate matter from zoning.
Dwellings, tiny homes & RVs
Unclear - verifyNo Edwards County ordinance on tiny homes, RV living, or minimum dwelling size was found; Texas has no statewide minimum size rule either. Confirm directly with Edwards County Commissioners Court.
Building permits & codes
Unclear - verifyTexas has no statewide building code and counties opt in individually; no evidence was found that Edwards County has adopted a general building code or permit requirement. source
Septic & composting toilets
Generally allowedEdwards County administers an OSSF (On-Site Sewage Facility) permit process consistent with the statewide TCEQ framework under Health & Safety Code Chapter 366 and 30 TAC Chapter 285; composting toilets fall under this same permitting system.
Greywater reuse
Unclear - verifyGreywater is addressed within the state's OSSF/30 TAC 285 septic rules rather than a standalone Edwards County ordinance; no distinct county rule was found. source
Rainwater harvesting
Generally allowedNo Edwards County-specific rainwater ordinance was found; the practice is governed by the general state-level framework, which the county has not been shown to override.
Private wells & water rights
RestrictedEdwards County is covered by the Real-Edwards Conservation and Reclamation District, established by the Texas Legislature in 1959, which requires a district permit application before drilling any well, in addition to the statewide driller's report requirement.
Living disconnected from utilities
Unclear - verifyNo Edwards County ordinance requiring connection to electric, water, or sewer utilities was found; any such requirement would more likely come from a municipality like the Town of Rocksprings, not the county.
Sun30-year normals
- Peak-sun hours, annual average
- 5.8 hrs/day
- Worst month (sizes an off-grid array)
- 4.6 hrs/day
- Yearly output per 1 kW of panels
- 1,624 kWh
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Weather1991-2020
- Precipitation
- 27 in/yr
- Snowfall
- 0 in/yr
- Heating degree days
- 2,202 (mild)
- Frost-free season
- Mar 16 to Nov 22
How far help isstraight-line
- Hospital
- none within range
- Fire station
- none within range
- Hardware store
- none within range
- Grocery
Lowe's Market - 0.2 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 78880).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Edwards 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.