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Fannin County, TX · off-grid fact sheet

Can you live off-grid in Fannin County, Texas?

93
of 100
Good with caveats

Yes, with one thing to plan around. Texas counties cannot zone rural land, so there is no county zoning to clear. The growing season runs about 231 frost-free days. Typical well depths here range from 40 feet to 370 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 45 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 40 feet to 370 feet
Growing season
A full season for most vegetables.
About 231 frost-free days, USDA zone 8a; last frost about March 25, first about November 11
Sun
Good sun. Size the array and battery bank for winter.
About 5.4 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
Low wildfire risk.
U.S. Forest Service wildfire hazard map: Very Low to Low here
Storms
Strong tornadoes pass through now and then. A safe room is worth pricing.
NOAA: no hurricane-strength storm within 50 miles since 1975; about 3 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Flat to gentle, easy to build on.
Slopes average about 3%, about 650 feet above sea level
Soil
Heavy clay. Expect a larger septic field, and work compost into garden beds. The county's soil test decides.
Clay, 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)

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Is it legal here?

Zoning
None. Texas counties cannot zone rural land, though septic, well, and floodplain rules still apply.
Building code
Texas state law applies the International Residential Code only inside city limits, so a house on unincorporated county land usually has no building code or permit. A county may opt in to require it, checked by an inspector the builder hires, but it cannot require approval before you build or charge a fee.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
A mix of two systems. Ask the state water office before you drill a well or dam a creek.

Look up a parcel's zoning free, or read Is it legal to live off-grid in Texas? for permits, septic, wells, and the counties that opt out.

What it costs to set up a homestead here

Well
Not priced
Depends on depth, which varies here. Get a driller's quote.
Septic
$5,000 to $10,000
Standard system
Solar and batteries
$20,000 to $35,000
Sized for a modest household
Road or driveway
$2,000 to $7,000
From the nearest road to a house site
Clearing
$1,000 to $3,000
A house site, solar, and garden
Total
$28,000 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 40 feet to 370 feet.
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.
Soil test
Get a soil test before you count on septic.
Clay drains slowly and can fail the test.

Nearby counties

37,571 people live in Fannin County, about 42.2 per square mile. It ranks tied for 23rd of the 254 Texas counties we scored, and Texas ranks 34th of 50 states.

Bryan County, OK · Delta County, TX · Lamar County, TX · Hunt County, TX · Grayson County, TX · Collin County, TX · All scored Texas counties

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Sources: FEMA flood maps, USGS and state driller well records, USGS brackish groundwater study, USDA soil survey, USGS 3DEP elevation, U.S. Forest Service wildfire hazard, USGS seismic hazard, USGS PAD-US public land, U.S. Census housing counts, USDA county land values, FCC broadband map, CMS hospital list. Rainfall: PRISM Group, Oregon State University, prism.oregonstate.edu (1991-2020 normals, 4 km grid; accessed 2026-09-17). Temperatures: PRISM Group, Oregon State University, prism.oregonstate.edu (1991-2020 temperature normals, 4 km grid; accessed 2026-09-26). Storms: NOAA hurricane tracks (HURDAT2, 1975-2025) and Storm Prediction Center tornado paths (EF2+, 1990-2025). Roads: © OpenStreetMap contributors. Data updated September 2026.