Possible, but the short season will be hard. The growing season is only about 117 frost-free days, so plan on cold-hardy crops and a greenhouse.
What the land says
Rain
Too dry to live on rain. Plan on a well, and on irrigating anything you grow.
About 23 inches a year (PRISM, 1991 to 2020 average)
Wells
Deep wells. Get a driller's quote before you offer.
The typical well here is about 310 feet deep; a well typically runs $16,000 to $35,000
Growing season
Very short. A greenhouse makes the difference.
About 117 frost-free days, USDA zone 6b; last frost about June 2, first about September 23
Sun
Good sun. Size the array and battery bank for winter.
About 4.7 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
Moderate wildfire risk. Keep brush cleared around the house.
U.S. Forest Service wildfire hazard map: Very Low to Moderate 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 5%, about 2,860 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Silt 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 0.5 miles (OpenStreetMap)
Check an Oregon 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 Union County, so call the county planning office with the parcel number to ask whether the land is zoned.
Building code
Oregon's building code applies uniformly statewide, including the Oregon Residential Specialty Code for houses (based on the International Residential Code), and cities and counties cannot set different requirements without state approval. City or county building departments issue house permits and inspect, and the state Building Codes Division does it for some counties.
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 310 feet, with pump and pressure tank
Septic
$5,000 to $10,000
Standard system
Solar and batteries
$19,000 to $36,000
Sized for a modest household
Road or driveway
$4,000 to $10,000
From the nearest road to a house site
Clearing
$1,000 to $5,000
A house site, solar, and garden
Total
$45,000 to $96,000
Before the house
Before you make an offer on land here
Well cost
Get a driller's quote.
Wells here run near 310 feet, so the well is a large cost.
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
25,944 people live in Union County, about 12.7 per square mile. It ranks tied for 13th of the 36 Oregon counties we scored, and Oregon ranks 46th of 50 states.