Best States / Idaho / Bonner County

Bonner County, ID · off-grid fact sheet

Can you live off-grid in Bonner County, Idaho?

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Significant challenges

Possible, but winter will be hard. The growing season is about 135 frost-free days and winter sun is weak, so plan on a greenhouse and a bigger battery bank or a generator. Wells are shallow here, near 130 feet, which keeps drilling costs down.

What the land says

Rain
Rain helps, but plan on a well for most of your water and on watering the garden in dry months.
About 32 inches a year (PRISM, 1991 to 2020 average)
Wells
Shallow wells, so drilling should be one of the cheaper costs.
The typical well here is about 130 feet deep; a well typically runs $7,000 to $17,000
Growing season
Short. Start seeds indoors and favor cold-hardy crops.
About 135 frost-free days, USDA zone 7a; last frost about May 12, first about September 26
Sun
Fair sun. Plan a larger array or a generator for winter.
About 4.1 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
Moderate wildfire risk. Keep brush cleared around the house.
U.S. Forest Service wildfire hazard map: Low to Moderate here
Storms
Hurricanes and strong tornadoes are rare here.
NOAA: no hurricane-strength storm within 50 miles since 1975; about 0.3 strong (EF2 or stronger) tornadoes a decade within 25 miles
Terrain
Rolling ground. Look for a flat house site.
Slopes average about 12%, about 2,470 feet above sea level
Soil
Good ground for a standard septic system. The county's soil test decides.
Silt 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 1.1 miles (OpenStreetMap)

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Is it legal here?

Zoning
Bonner County zones land outside its towns and publishes its zoning map. Our free lookup shows the district for any address.
Building code
Idaho's residential code (the 2018 International Residential Code with state changes) is enforced only by cities and counties that choose to run a building permit program; where a county has none, there is no county building permit for a house.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
Water belongs to whoever claimed it first. A new well or pond may need a state permit, and a creek may already be claimed.

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

What it costs to set up a homestead here

Well
$7,000 to $17,000
Drilled to about 130 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 $5,000
A house site, solar, and garden
Total
$35,000 to $74,000
Before the house

Before you make an offer on land here

Flood map
Look up the parcel on FEMA's flood map.
Flood zones run along creeks and rivers here. Building in one means flood insurance and extra permits.
Zoning
Look up the parcel's zoning district with our free tool.
The county publishes its zoning map.
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

52,547 people live in Bonner County, about 30.3 per square mile. It ranks tied for 11th of the 44 Idaho counties we scored, and Idaho ranks 40th of 50 states.

Boundary County, ID · Pend Oreille County, WA · Kootenai County, ID · Lincoln County, MT · Stevens County, WA · Spokane County, WA · All scored Idaho 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.