Can you live off-grid in Montgomery County, Pennsylvania?
91
of 100
Good with caveats
Yes, with one thing to plan around. Water is easy here, with about 49 inches of rain a year and wells near 160 feet. Flood zones cover parts of the county, so look up any parcel on FEMA's flood map before you offer.
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 160 feet deep; a well typically runs $8,000 to $19,000
Growing season
A full season for most vegetables.
About 194 frost-free days, USDA zone 7a; last frost about April 13, first about October 27
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 cover parts of the county. Look up any parcel on FEMA's flood map before you offer.
FEMA maps flood zones in parts of the county
Wildfire
Low wildfire risk.
U.S. Forest Service wildfire hazard map: Very Low to Low here
Storms
Hurricanes and strong tornadoes are rare here.
NOAA: no hurricane-strength storm within 50 miles since 1975; about 1 strong (EF2 or stronger) tornado a decade within 25 miles
Terrain
Flat, but the ground stays wet. Build on the higher, drier spot.
Slopes average about 7%, about 270 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Silt loam, 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 0.5 miles (OpenStreetMap)
Check a Pennsylvania 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 township or borough, not the county. The county zones only where the township or borough has no zoning ordinance of its own, so ask the township office.
Building code
Pennsylvania's Uniform Construction Code applies statewide and uses the 2021 International Residential Code for houses (since January 1, 2026). If your township or borough runs its own code program it issues the permit and inspects; if it opted out, you hire a state-certified third-party agency for the plan review and inspections.
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 160 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 $9,000
From the nearest road to a house site
Clearing
$1,000 to $4,000
A house site, solar, and garden
Total
$36,000 to $76,000
Before the house
Before you make an offer on land here
Flood map
Look up the parcel on FEMA's flood map.
Flood zones cover parts of the county. Building in one means flood insurance and extra permits.
Zoning
Call the town or township office with the parcel's address.
Set by the township or borough, not the county. The county zones only where the township or borough has no zoning ordinance of its own, so ask the township office.
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
868,742 people live in Montgomery County, about 1798.7 per square mile. It ranks tied for 15th of the 66 Pennsylvania counties we scored, and Pennsylvania ranks 26th of 50 states.