Off-grid site report
Kerr County, TX
30.0473, -99.1396 · 1,654 ft elevationRead this before you act on anything below. This is my researched starting point for Kerr 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 rulesKerr County, TX
Zoning & raw-land occupancy
Generally allowedUnincorporated Kerr County has no general zoning; Texas Local Government Code Chapter 231 withholds zoning authority from counties unless specially granted, and Kerr County has not received that grant. Kerrville and Ingram zone within their own city limits. source
Dwellings, tiny homes & RVs
Varies locallyNo countywide dwelling-type or minimum-size code was found for unincorporated land; tiny homes and RVs are mainly constrained by septic/well permitting tied to lot size. Kerrville and Ingram have their own municipal dwelling codes inside city limits. source
Building permits & codes
Unclear - verifyNo general countywide residential building code was found; the County Engineer's office permits floodplain development, driveways, and utility installation in county rights-of-way, but not confirmed whether a general building permit applies outside city limits. source
Septic & composting toilets
RestrictedOSSF permits, including for composting toilets, are required through the Kerr County Environmental Health Department acting as TCEQ's local permitting authority under state rules. source
Greywater reuse
Unclear - verifyNo standalone Kerr County greywater ordinance was found; greywater appears to be addressed within the general OSSF site-review framework rather than separately, so confirm specifics with the Environmental Health Department. source
Rainwater harvesting
Generally allowedRainwater harvesting is actively encouraged by the Headwaters Groundwater Conservation District as a conservation practice, and no Kerr County ordinance restricting it was found.
Private wells & water rights
RestrictedPrivate wells are registered and permitted by the Headwaters Groundwater Conservation District under Texas Water Code Chapter 36, not by Kerr County; county subdivision rules reference a minimum acreage (reportedly around five acres, possibly revised upward) for combined well and septic use, best confirmed directly with HGCD.
Living disconnected from utilities
Generally allowedNo Kerr County ordinance was found requiring connection to electric, water, or sewer utilities in unincorporated areas; any such requirement would more likely stem from Kerrville or Ingram municipal code within city limits.
Sun30-year normals
- Peak-sun hours, annual average
- 5.6 hrs/day
- Worst month (sizes an off-grid array)
- 4.4 hrs/day
- Yearly output per 1 kW of panels
- 1,556 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 32 in/yr
- Snowfall
- 1 in/yr
- Heating degree days
- 2,214 (mild)
- Frost-free season
- Mar 29 to Nov 8
How far help isstraight-line
- Hospital
Peterson Regional Medical Center - 0.8 mi
- Fire station
Kerrville Central Fire Station - 0.4 mi
- Hardware store
The Home Depot - 1.5 mi
- Grocery
H-E-B - 0.3 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 78028).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Kerr 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.