Off-grid site report
Cass County, TX
33.1151, -94.1829 · 259 ft elevationRead this before you act on anything below. This is my researched starting point for Cass 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 rulesCass County, TX
Zoning & raw-land occupancy
Unclear - verifyTexas counties generally lack zoning power over unincorporated land, and no Cass County zoning ordinance was found. Incorporated towns within the county, like Atlanta, have their own codes that would apply if your parcel is inside city limits. source
Dwellings, tiny homes & RVs
Unclear - verifyNo confirmed Cass County ordinance on tiny homes, RVs, or dwelling standards for unincorporated land; the county has limited state-granted authority to adopt such rules but doesn't appear to have used it. Inside Atlanta city limits, a city permit is required for construction or alteration. source
Building permits & codes
Unclear - verifyNo countywide building code was found administered by the Cass County Commissioners Court. The City of Atlanta requires a permit from its city manager for construction within city limits; outside incorporated towns this is not confirmed. source
Septic & composting toilets
Generally allowedSeptic systems (OSSFs), including composting toilets, are permitted statewide under Texas Health and Safety Code Chapter 366 and 30 TAC Chapter 285, both administered by TCEQ. It's not confirmed whether Cass County itself issues these permits as a TCEQ Authorized Agent or whether the TCEQ regional office does; call TCEQ's OSSF program to confirm. source
Greywater reuse
Generally allowedGreywater disposal is addressed within the same state OSSF rules (30 TAC Chapter 285, Subchapter H) rather than a separate program, and no Cass County-specific greywater ordinance was found. source
Rainwater harvesting
Generally allowedNo Cass County-specific rule was found either restricting or endorsing rainwater harvesting, so the generally permissive state baseline applies.
Private wells & water rights
Unclear - verifyIt's not confirmed whether Cass County lies within a Groundwater Conservation District, which would add rules on top of Texas's default rule-of-capture approach to groundwater. Verify directly with the county or a nearby GCD before drilling.
Living disconnected from utilities
Unclear - verifyNo county ordinance requiring connection to electric, water, or sewer utilities was found for unincorporated Cass County; such a requirement, if any, would come from a specific incorporated city rather than the county.
Sun30-year normals
- Peak-sun hours, annual average
- 5.2 hrs/day
- Worst month (sizes an off-grid array)
- 4.0 hrs/day
- Yearly output per 1 kW of panels
- 1,409 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 49 in/yr
- Snowfall
- 1 in/yr
- Heating degree days
- 2,645 (mild)
- Frost-free season
- Mar 25 to Nov 15
How far help isstraight-line
- Hospital
CHRISTUS Saint Michael Hospital-Atlanta - 1.3 mi
- Fire station
Atlanta Fire Department - 0.7 mi
- Hardware store
Price Hardware - 1.2 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 75551).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Cass 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.