Can you live off-grid in Allendale County, South Carolina?
93
of 100
Good with caveats
Yes, with two things to plan around. Rain is plentiful, about 47 inches a year. The U.S. Forest Service rates wildfire risk high in parts of the county, so plan cleared ground around the house. NOAA counts about four 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 47 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 320 feet deep; a well typically runs $12,000 to $26,000
Growing season
Long enough for a spring and a fall garden.
About 242 frost-free days, USDA zone 8b; last frost about March 19, first about November 17
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 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 4 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Flat to gentle, easy to build on.
Slopes average about 2%, about 160 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Loamy sand, moderately 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 0.6 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 Allendale 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 320 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
$38,000 to $80,000
Before the house
Before you make an offer on land here
Well cost
Get a driller's quote.
Wells here run near 320 feet, so the well is a large cost.
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.
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.
Nearby counties
7,369 people live in Allendale County, about 18.1 per square mile. It ranks tied for 23rd of the 46 South Carolina counties we scored, and South Carolina ranks 10th of 50 states.