Idaho · Off-grid & homestead potential
Lemhi County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths are a stronger property-autonomy legal backdrop and deep seclusion — about 174 people within a 30-minute drive. The trade-offs: elevated current hazard exposure and thin water margin (20.8″/yr rainfall).
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Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →
Scout Lemhi County
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Property hunt
Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.
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Working estimate
A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.
Before an offer
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What it takes to build here — permits, zoning, and septic — scouted from Lemhi County’s own official sources.
Lemhi County operates a joint county/city Building Department that enforces the adopted 2018 International Residential Code and issues residential building permits.
Lemhi County - Building Department ↗The Lemhi County Development Code (Ordinance 2017-1, amended 2022) establishes zoning districts and development standards under Idaho's Local Land Use Planning Act.
Lemhi County Development Code ↗Subsurface sewage disposal (septic) permits for Lemhi County are issued by Eastern Idaho Public Health under IDAPA 58.01.03; an installation permit is required before construction.
Eastern Idaho Public Health - Septic ↗Under Idaho's homeowner exemption a property owner may obtain the permit and personally perform all work on their own primary or secondary residence without a contractor license.
Idaho Division of Building Safety - Homeowners ↗Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Always confirm current rules with Lemhi County Building Department / Planning & Zoning before you buy or build. Scouted Aug 2026 from official county sources.
Lemhi County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths: a stronger property-autonomy legal backdrop and deep seclusion — about 174 people within a 30-minute drive. Watch-outs: elevated current hazard exposure and thin water margin (20.8″/yr rainfall).
Lemhi County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Eastern Idaho Public Health. Owner-builders may act as their own contractor to build their home. Rules change and cities within the county differ — always confirm with the county before you buy or build.
Land in Lemhi County runs about $3,947 per acre, based on the latest county data.
Lemhi County gets about 20.8" of rain a year, with severe drought in roughly 9.7% of years.
A representative private-land location has about 174 people within a 30-minute drive and 10,815 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.
Off-grid gear
Going off-grid in Lemhi County means bringing your own water and power. The kit we’d start with:
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