Can you live off-grid in Foster County, North Dakota?
76
of 100
Significant challenges
Possible, but the short season will be hard. The growing season is only about 139 frost-free days, so plan on cold-hardy crops and a greenhouse. Wells are shallow here, near 50 feet, which keeps drilling costs down. Septic will likely cost more, because the soil stays wet for long stretches.
What the land says
Rain
Too dry to live on rain. Plan on a well, and on irrigating anything you grow.
About 20 inches a year (PRISM, 1991 to 2020 average)
Wells
Shallow wells, so drilling should be one of the cheaper costs.
The typical well here is about 50 feet deep; a well typically runs $4,000 to $10,000
Growing season
Short. Start seeds indoors and favor cold-hardy crops.
About 139 frost-free days, USDA zone 4a; last frost about May 10, first about September 27
Sun
Good sun. Size the array and battery bank for winter.
About 4.6 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
Low wildfire risk.
U.S. Forest Service wildfire hazard map: Very Low 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, but the ground stays wet. Build on the higher, drier spot.
Slopes average about 1%, about 1,530 feet above sea level
Soil
Expect a costlier septic system, because the soil stays wet for long stretches. The county's soil test decides.
Loam, somewhat poorly drained (USDA soil survey). A mound, sand filter, or treatment unit typically runs $10,000 to $20,000
Road
Paved roads are close by.
Nearest paved road usually within about 0.9 miles (OpenStreetMap)
Check a North Dakota 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
Rural land here is often unzoned. Confirm with the county before you build.
Building code
North Dakota's State Building Code (based on the 2024 International Residential Code for houses since January 1, 2026) applies only where a city, township, or county chooses to enforce a building code. Many rural counties and townships do not, so the house there gets no code inspection, though a county that zones may still require a zoning permit.
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.
Drilled to about 50 feet, with pump and pressure tank
Septic
$10,000 to $20,000
Mound, sand filter, or treatment unit
Solar and batteries
$18,000 to $34,000
Sized for a modest household
Road or driveway
$3,000 to $9,000
From the nearest road to a house site
Clearing
$1,000 to $5,000
A house site, solar, and garden
Total
$37,000 to $78,000
Before the house
Before you make an offer on land here
Soil test
Get a soil test before you count on septic.
The soil stays wet, which can rule out a standard system.
Zoning
Confirm with the county whether the parcel is zoned.
Rural land in North Dakota is often unzoned.
Road access
Confirm the parcel fronts a public road or has a recorded easement.
Without one, you may not have a legal way in.
Nearby counties
3,309 people live in Foster County, about 5.2 per square mile. It ranks tied for 21st of the 53 North Dakota counties we scored, and North Dakota ranks 38th of 50 states.