Off-grid site report
La Salle County, TX
28.4357, -99.2361 · 446 ft elevationRead this before you act on anything below. This is my researched starting point for La Salle 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 rulesLa Salle County, TX
Zoning & raw-land occupancy
Unclear - verifyTexas counties generally lack home-rule zoning power over unincorporated land, and no La Salle County zoning ordinance could be confirmed from official sources; the county's permits page did not yield ordinance text. Any zoning likely applies only within incorporated Cotulla, not confirmed for the unincorporated county. source
Dwellings, tiny homes & RVs
Unclear - verifyNo La Salle County-specific rule on tiny homes, minimum dwelling size, or RV occupancy was found. Texas counties have narrow, permissive post-2009 authority to set residential construction standards, but it's not confirmed whether La Salle County has adopted any.
Building permits & codes
Unclear - verifyThe county's Commissioners Court maintains an official 'Permits and Applications' page, confirming some permitting process exists, but the specific adopted building code and requirements could not be confirmed from available sources. source
Septic & composting toilets
Generally allowedSeptic (OSSF) systems are regulated statewide by TCEQ under 30 TAC Chapter 285, typically administered locally by an authorized county agent; it is not confirmed whether La Salle County itself holds that authority. A state exemption may apply for single-family tracts of 10+ acres meeting site conditions (the '10-acre rule'). source
Greywater reuse
Unclear - verifyNo standalone greywater ordinance or TCEQ program specific to La Salle County was found; greywater appears to fall under the general statewide OSSF/septic framework with no confirmed local variance.
Rainwater harvesting
Generally allowedRainwater harvesting is state-permitted and actively promoted locally: the Wintergarden Groundwater Conservation District, covering La Salle County, lists rainwater harvesting among its core program responsibilities. No county ordinance restricting it was found.
Private wells & water rights
RestrictedUnlike areas with no groundwater district, La Salle County sits inside the Wintergarden Groundwater Conservation District, which regulates well permitting, spacing, and metering over the Carrizo-Wilcox Aquifer rather than leaving it to unregulated rule of capture. source
Living disconnected from utilities
Unclear - verifyNo La Salle County ordinance requiring connection to electric, water, or sewer utilities for unincorporated land was found, and Texas has no statewide mandate to connect; this is not confirmed one way or the other locally.
Sun30-year normals
- Peak-sun hours, annual average
- 5.7 hrs/day
- Worst month (sizes an off-grid array)
- 4.4 hrs/day
- Yearly output per 1 kW of panels
- 1,566 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 25 in/yr
- Heating degree days
- 1,094 (mild)
- Frost-free season
- Feb 17 to Dec 4
How far help isstraight-line
- Hospital
Frio Regional Hospital - 32.6 mi
- Fire station
Cotulla Fire Department - 0.5 mi
- Hardware store
- none within range
- Grocery
Lowe's Market - 0.9 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 78014).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in La Salle 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 22, 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.