Can you live off-grid in Calhoun County, South Carolina?
94
of 100
Good with caveats
Yes, with two things to plan around. Water is easy here, with about 48 inches of rain a year and wells near 190 feet. The U.S. Forest Service rates wildfire risk high in parts of the county, so plan cleared ground around the house. NOAA counts about five strong tornadoes a decade within 25 miles, so a storm shelter belongs in the plan.
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 48 inches a year (PRISM, 1991 to 2020 average)
Wells
Typical well depth. Budget for a mid-range well.
The typical well here is about 190 feet deep; a well typically runs $9,000 to $19,000
Growing season
Long enough for a spring and a fall garden.
About 246 frost-free days, USDA zone 8b; last frost about March 16, first about November 19
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 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 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
Strong tornadoes are common. A storm shelter belongs in the plan.
NOAA: one hurricane-strength storm within 50 miles since 1975; about 5 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Flat to gentle, easy to build on.
Slopes average about 3%, about 240 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Loamy sand, 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 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 Calhoun 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.
Drilled to about 190 feet, with pump and pressure tank
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
$35,000 to $73,000
Before the house
Before you make an offer on land here
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.
Flood map
Look up the parcel on FEMA's flood map.
Flood zones run along creeks and rivers here. Building in one means flood insurance and extra permits.
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.
Nearby counties
14,186 people live in Calhoun County, about 37.2 per square mile. It ranks tied for 19th of the 46 South Carolina counties we scored, and South Carolina ranks 10th of 50 states.