Off-grid site report
Maverick County, TX
28.7013, -100.4829 · 814 ft elevationRead this before you act on anything below. This is my researched starting point for Maverick 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 rulesMaverick County, TX
Zoning & raw-land occupancy
Unclear - verifyNo countywide zoning ordinance was found for unincorporated Maverick County; Texas counties generally lack broad zoning authority. The City of Eagle Pass has its own zoning and land development rules inside city limits and its extraterritorial jurisdiction. source
Dwellings, tiny homes & RVs
Unclear - verifyNo official Maverick County standard for minimum dwelling size, tiny homes, or RV occupancy was found. Texas allows counties to adopt residential construction standards but there's no confirmation Maverick County has done so.
Building permits & codes
Varies locallyEagle Pass has adopted an International Code Council based building code for the city, but no equivalent code was confirmed for unincorporated Maverick County. source
Septic & composting toilets
Generally allowedSeptic systems are regulated statewide by TCEQ under the OSSF program; a permit and approved plan are required. It's unconfirmed whether Maverick County or the TCEQ regional office is the local authorized agent, so confirm directly. source
Greywater reuse
Unclear - verifyNo standalone greywater rule was found; TCEQ treats greywater as part of the general OSSF septic framework rather than a separate permit category. source
Rainwater harvesting
Generally allowedNo Maverick County restriction on rainwater harvesting was found, so the state's generally permissive baseline for domestic rainwater collection applies.
Private wells & water rights
Generally allowedNo Groundwater Conservation District covering Maverick County was confirmed, so Texas's common-law rule of capture likely governs well water rather than a local permitting district. source
Living disconnected from utilities
Unclear - verifyNo Maverick County ordinance was found requiring connection to electric, water, or sewer utilities for occupancy of a rural dwelling; check separately if inside Eagle Pass city limits.
Sun30-year normals
- Peak-sun hours, annual average
- 5.6 hrs/day
- Worst month (sizes an off-grid array)
- 4.6 hrs/day
- Yearly output per 1 kW of panels
- 1,547 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 20 in/yr
- Snowfall
- 1 in/yr
- Heating degree days
- 1,270 (mild)
- Frost-free season
- Feb 14 to Dec 8
How far help isstraight-line
- Hospital
Fort Duncan Regional Medical Center - 1.8 mi
- Fire station
Eagle Pass Fire Dept. Station 3 - 0.8 mi
- Hardware store
Lowe's - 0.2 mi
- Grocery
Walmart Supercenter - 0.1 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 78852).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Maverick 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.