Can you live off-grid in Union County, South Carolina?
97
of 100
Strong
Yes, with one thing to plan around. The growing season runs about 217 frost-free days. Typical well depths here range from 220 feet to 880 feet, so get a local driller's quote.
What the land says
Rain
Rain can supply much of a household's water with a large tank. A garden mostly waters itself in normal years.
About 46 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 220 feet to 880 feet
Growing season
A full season for most vegetables.
About 217 frost-free days, USDA zone 8a; last frost about March 31, first about November 2
Sun
Good sun. Size the array and battery bank for winter.
About 5.3 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: Low to Moderate here
Storms
Strong tornadoes pass through now and then. A safe room is worth pricing.
NOAA: one hurricane-strength storm within 50 miles since 1975; about 2 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Rolling ground. Look for a flat house site.
Slopes average about 13%, about 590 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 0.7 miles (OpenStreetMap)
Check a South Carolina 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
South Carolina requires every county and city to enforce the statewide building codes (the International Residential Code with state changes for houses), so a new house needs a permit and inspections. A county may be exempt for up to five years at a time by declaring it cannot afford the service.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
Owners of land along a creek or lake can make reasonable use of its water.
Depends on depth, which varies here. Get a driller's quote.
Septic
$5,000 to $10,000
Standard system
Solar and batteries
$18,000 to $34,000
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
$27,000 to $54,000
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 220 feet to 880 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
26,629 people live in Union County, about 51.8 per square mile. It ranks tied for 4th of the 46 South Carolina counties we scored, and South Carolina ranks 10th of 50 states.