Can you live off-grid in Jeff Davis County, Texas?
70
of 100
Significant challenges
Possible, but water will be hard. Only about 15 inches of rain falls a year, so you will rely on a well (near 270 feet here) or hauled water. The sun is strong, about 6.4 hours of full sun a day, so a smaller solar array covers a household. The ground is steep, with slopes averaging about 33%. That raises the cost of a driveway, septic, and foundation.
What the land says
Rain
Desert rain. Plan on a well or hauled water, and on irrigating anything you grow.
About 15 inches a year (PRISM, 1991 to 2020 average)
Wells
Typical well depth. Budget for a mid-range well.
The typical well here is about 270 feet deep; a well typically runs $9,000 to $21,000
Growing season
A full season for most vegetables.
About 209 frost-free days, USDA zone 8a; last frost about April 14, first about November 4
Sun
Strong sun. A modest solar array covers a household.
About 6.4 hours of full sun a day, averaged over the year
Flood
Flood zones are rare here. Still, look up the parcel on FEMA's flood map.
FEMA maps no flood zones nearby
Wildfire
Wildfire risk is high in parts of the county. Check the risk for the parcel you want.
U.S. Forest Service wildfire hazard map: Very Low to High here
Storms
Hurricanes and strong tornadoes are rare here.
NOAA: no hurricane-strength storm within 50 miles since 1975; no strong (EF2 or stronger) tornado within 25 miles since 1990
Terrain
Steep. A flat house site and a driveway route will drive the cost.
Slopes average about 33%, about 5,070 feet above sea level
Soil
Expect a costlier septic system, because the ground is steep. The county's soil test decides.
Loam, well drained (USDA soil survey). A mound, sand filter, or treatment unit typically runs $10,000 to $20,000
Road
Dirt tracks. Plan to build or maintain your own road.
Nearest road often a dirt track, about 0.7 miles away (OpenStreetMap)
Check a Texas parcel, or plan the one you own
Get a free 0-100 off-grid score.
A step-by-step build plan, sizing your solar, water, garden, septic, heat, and buildings.
Is it legal here?
Zoning
None. Texas counties cannot zone rural land, though septic, well, and floodplain rules still apply.
Building code
Texas state law applies the International Residential Code only inside city limits, so a house on unincorporated county land usually has no building code or permit. A county may opt in to require it, checked by an inspector the builder hires, but it cannot require approval before you build or charge a fee.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
A mix of two systems. Ask the state water office before you drill a well or dam a creek.
Drilled to about 270 feet, with pump and pressure tank
Septic
$10,000 to $20,000
Mound, sand filter, or treatment unit
Solar and batteries
$20,000 to $35,000
Sized for a modest household
Road or driveway
$7,000 to $16,000
From the nearest road to a house site
Clearing
$1,000 to $3,000
A house site, solar, and garden
Total
$47,000 to $95,000
Before the house
Before you make an offer on land here
Soil test
Get a soil test before you count on septic.
Steep ground can rule out a standard system.
Wildfire
Ask an insurance agent whether they will write a policy.
The U.S. Forest Service rates wildfire risk high in parts of the county.
Road access
Confirm a recorded easement to the parcel.
The nearest roads are often dirt tracks.
Nearby counties
1,856 people live in Jeff Davis County, about 0.8 per square mile. It ranks tied for 239th of the 254 Texas counties we scored, and Texas ranks 34th of 50 states.