Can you live off-grid in Westchester County, New York?
91
of 100
Good with caveats
Yes, with one thing to plan around. Rain is plentiful, about 49 inches a year. The U.S. Forest Service rates wildfire risk high in parts of the county, so plan cleared ground around the house.
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 49 inches a year (PRISM, 1991 to 2020 average)
Wells
Typical well depth. Budget for a mid-range well.
The typical well here is about 230 feet deep; a well typically runs $10,000 to $22,000
Growing season
A full season for most vegetables.
About 195 frost-free days, USDA zone 6b; last frost about April 14, first about October 28
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 run along creeks and rivers here. Look up the parcel on FEMA's flood map.
FEMA maps flood zones within a quarter mile in parts of the county
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
Hurricanes and strong tornadoes are rare here.
NOAA: one hurricane-strength storm within 50 miles since 1975; about 0.6 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Rolling ground. Look for a flat house site.
Slopes average about 8%, about 570 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 New York 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
Set by the town, not the county. The rules depend on which town the parcel is in.
Building code
New York's Uniform Code applies everywhere except New York City, and its residential code is based on the 2024 International Residential Code. Your town, village, or city issues the permit and inspects; where a town has opted out, the county or the state does.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed with a permit and an approved unit.
Water rights
Owners of land along a creek or lake can make reasonable use of its water.
Drilled to about 230 feet, with pump and pressure tank
Septic
$5,000 to $10,000
Standard system
Solar and batteries
$21,000 to $39,000
Sized for a modest household
Road or driveway
$3,000 to $8,000
From the nearest road to a house site
Clearing
$1,000 to $4,000
A house site, solar, and garden
Total
$40,000 to $83,000
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 town office with the parcel's address.
Zoning here is set by the town, not the county.
Nearby counties
990,817 people live in Westchester County, about 2299.9 per square mile. It ranks tied for 9th of the 59 New York counties we scored, and New York ranks 25th of 50 states.