Off-grid site report
Gregg County, TX
32.5454, -94.7536 · 325 ft elevationRead this before you act on anything below. This is my researched starting point for Gregg 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 rulesGregg County, TX
Zoning & raw-land occupancy
Varies locallyTexas counties lack general zoning authority over unincorporated land, and Gregg County has none; zoning only applies inside cities like Longview, Kilgore, and Gladewater. source
Dwellings, tiny homes & RVs
Unclear - verifyNo Gregg County rule on minimum dwelling size, tiny homes, or RV living in unincorporated areas was found; municipal codes (e.g., Kilgore) apply only inside city limits. Confirm with the county or relevant city if near town. source
Building permits & codes
Unclear - verifyNo general county building-permit office for unincorporated construction was identified; building permits are handled by city departments (e.g., Longview Planning) for property inside municipal limits. source
Septic & composting toilets
Generally allowedThe Gregg County Health Department issues OSSF (septic) permits as a TCEQ Authorized Agent under state rules (Texas Health and Safety Code Ch. 366, 30 TAC 285), including site evaluations, applications, and maintenance contract tracking. source
Greywater reuse
Unclear - verifyNo standalone Gregg County greywater ordinance was found; greywater likely falls under the same state OSSF framework (30 TAC 285) that covers septic and surface application, but this isn't confirmed separately.
Rainwater harvesting
Generally allowedNo Gregg County restriction on rainwater harvesting was found, and the practice is generally encouraged at the state level by the Texas Water Development Board.
Private wells & water rights
Varies locallyNo groundwater conservation district currently covers Gregg County, so the state rule of capture applies and a State Well Report filed by your driller is the main requirement; the county has voted to join a forming Northeast Texas Groundwater Conservation District that would need legislative approval before regulating wells.
Living disconnected from utilities
Generally allowedNo Gregg County ordinance was found requiring connection to electric, water, or sewer utilities in unincorporated areas; any such mandate would come from a specific city ordinance inside municipal limits.
Sun30-year normals
- Peak-sun hours, annual average
- 5.2 hrs/day
- Worst month (sizes an off-grid array)
- 3.9 hrs/day
- Yearly output per 1 kW of panels
- 1,444 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 50 in/yr
- Heating degree days
- 2,347 (mild)
How far help isstraight-line
- Hospital
Longview Regional Medical Center - 1.6 mi
- Fire station
Longview Fire Department - Station 6 - 1.0 mi
- Hardware store
The Home Depot - 1.1 mi
- Grocery
Granary St Health Food Store - 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 75605).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Gregg 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.