Can you live off-grid in San Juan County, New Mexico?
70
of 100
Significant challenges
Possible, but water will be hard. Only about 8 inches of rain falls a year, so you will rely on a well 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 mostly flat and drains well, which keeps building simple.
What the land says
Rain
Desert rain. Plan on a well or hauled water, and on irrigating anything you grow.
About 8 inches a year (PRISM, 1991 to 2020 average)
Wells
Well depth varies a lot here. Get a local driller's quote before you offer.
Typical well depths here range from 10 feet to 2,270 feet
Growing season
Enough for most vegetables. Start tomatoes and peppers indoors.
About 154 frost-free days, USDA zone 7a; last frost about May 7, first about October 9
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 run along creeks and rivers here. Look up the parcel on FEMA's flood map.
FEMA maps flood zones within a quarter mile in places
Wildfire
Wildfire risk is high in places. 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
Flat to gentle, easy to build on.
Slopes average about 4%, about 5,720 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Loam, well drained (USDA soil survey). A standard system typically runs $5,000 to $10,000
Road
Paved roads are close by.
Nearest paved road usually within about 0.8 miles (OpenStreetMap)
Check a New Mexico 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
We found no public zoning map for San Juan County, so call the county planning office with the parcel number to ask whether the land is zoned.
Building code
New Mexico has a statewide residential code, the 2021 New Mexico Residential Building Code (based on the 2021 International Residential Code), set by the state Construction Industries Division. Building a house normally needs a permit, issued by the Division or by a city or county that runs its own full-service building department.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
Water belongs to whoever claimed it first. A new well or pond may need a state permit, and a creek may already be claimed.
Depends on depth, which varies here. Get a driller's quote.
Septic
$5,000 to $10,000
Standard system
Solar and batteries
$23,000 to $36,000
Sized for a modest household
Road or driveway
$3,000 to $7,000
From the nearest road to a house site
Clearing
$1,000 to $4,000
A house site, solar, and garden
Total
$32,000 to $56,000
Before the house, plus the well
Before you make an offer on land here
Well depth
Get a local driller's depth estimate.
Typical well depths here range from 10 feet to 2,270 feet.
Zoning
Call the county planning office with the parcel number.
There is no public zoning map, so we cannot tell whether the land is zoned.
Soil test
Get a soil test before you count on septic.
The county has to approve the ground before it issues a septic permit.
Nearby counties
120,675 people live in San Juan County, about 21.9 per square mile. It ranks tied for 25th of the 33 New Mexico counties we scored, and New Mexico ranks 41st of 50 states.