County profile

Partially sourced

Lemhi County

Official Tier 2 Idaho source review updated from Lemhi County building, county/city land-use assistance, and FAQ resources; office confirmation still needed for tiny homes and long-term RV occupancy.

County-level researchedParcel review requiredOff-grid research candidateRV research candidateTiny-home candidate

Profile boundary

County Profiles Do Not Approve Parcels

This profile summarizes county-level signals. Before relying on a parcel, verify current rules with planning, zoning, building, environmental health, water, road, fire, title, and local professionals.

Read disclaimer

Verification queue

What Still Needs Confirmation

This profile has official source coverage for county-level discovery, but it still needs stronger current county-office confirmation before being promoted to verified. Treat it as a shortlist candidate, then confirm the exact parcel and intended use with local offices.

Office path

Current county contact

Confirm who handles planning, subdivision, rural addressing, floodplain, permitting, and enforcement for the parcel.

Parcel path

Exact intended use

Ask about the specific structure, RV or camper occupancy plan, water source, septic path, access road, and development sequence.

At a glance

Fast Read

County-level discovery summary for alternative housing research. Use this as a shortlist signal, then verify the specific parcel and code path.

Verify first
Overall

Strong discovery fit

Lemhi County has a Freedom Score of 80. Its strongest profile signals are Off-grid living (5/5) and Tiny homes (4/5).

Best use case

Salmon area rural land research

Best initial fit: Salmon area rural land research, mountain county off-grid screening, buyers who need visible building resources. Check county planning materials before making parcel assumptions.

Land signal

53/100 affordability score

$15,828 per acre snapshot with 54 active land listings and a 3/5 availability signal.

Caution

ADUs needs extra review

Verify building permit path, site plan, setbacks, access permit, septic, well, snow load, covenants, city boundaries, and whether a proposed tiny home or RV is legally occupiable before purchase

Trust strip

Source Snapshot

Fast source context for this county profile. Use the full source trail below for links, citations, and parcel-level verification reminders.

Data status
Land snapshotsourced
Jun 5, 2026

LandSearch

Broadbandsourced
2024

Census Reporter ACS 2024 5-year table B28002

Public landsourced
2026

Idaho Department of Lands Surface Management Agency GIS layer

Solar periodsourced
2001-2020

NASA POWER 2001-2020 solar irradiance climatology

County citationssourced
11

Planning, zoning, building, and profile links

Best Fit

Salmon area rural land researchmountain county off-grid screeningbuyers who need visible building resources

Pros

  • Official building page identifies a county/city building department and land-use assistance role
  • county FAQ points buyers to septic and well feasibility checks
  • Lemhi has very low density and large public-land context for mountain off-grid screening

Cons

  • Formal building permit, access, septic, well, snow-load, and city-jurisdiction review can limit informal use
  • raw land addressing and access may create hurdles
  • mountain parcels may have snow, wildfire, and road-maintenance constraints

Alternative Housing Ratings

derived

Verified county-level discovery scores

Tiny Homes
4/5
RV Living
4/5
Off Grid
5/5
Container Homes
3/5
ADUs
2/5

Alternative Housing Notes

Tiny Homes

Lemhi County has official county/city building and land-use assistance resources. Tiny home feasibility should be checked through building department review, site plan, setbacks, access permit, septic, well, snow load, city jurisdiction, and adopted code requirements before purchase.

RV Living

RV or camper occupancy should be confirmed directly with Lemhi County because the building resources do not establish blanket long-term RV living rights.

Off Grid

Off-grid projects should verify access permits, 911 addressing, septic, well requirements, setbacks, snow load, road access, county/city building review, wildfire exposure, and road maintenance before relying on rural acreage.

Container Homes

Container homes should be reviewed as dwelling or structure proposals through the Lemhi County and City Building Department before relying on a parcel.

ADUs

ADU feasibility should be checked against parcel context, setbacks, utilities, city jurisdiction, septic, well, and any private restrictions.

Land Affordability

sourced

Sourced market snapshot

Price/Acre Estimate
$15,828
Active Land Listings
54
Availability Score
3/5
Affordability Score
53/100

Source: LandSearch snapshot from June 5, 2026. LandSearch Idaho county price table average price per acre and active listing count; stored in medianAcrePrice field for compatibility but not a true median acre price.

How to read source layers

Population Context

sourced

Sourced Census estimate

Population
8,397
Population Density
1.8 / sq mi

Population uses 2024 U.S. Census county estimates. Density is computed from county land area in the imported GeoJSON boundary data.

Water and Septic

draft

Parcel-level verification needed

Water

Water availability should be checked with Idaho Department of Water Resources and local well feasibility resources before purchase.

Septic

Septic feasibility should be confirmed with Eastern Idaho Public Health before purchase because the county FAQ identifies septic review as part of buildability.

Climate, Utilities, and Access

derived

Mixed sourced and derived layers

Snowfall
37.2"
Precipitation
12.2"
Growing Season
160 days
Broadband
8/10
Solar
5/10
Public Land
2,657,244
Recreation Access
5/5
Federal Public Land
2,619,686
State Public Land
37,558
Local Public Land
0

Public land source: Idaho Department of Lands Surface Management Agency GIS layer snapshot from 2026. County-clipped GIS estimate using Idaho Surface Management Agency categories: BLM; STATE; STATEFG; USFS. Excludes Private, BIA, and Indian Reservation surface categories.

Broadband Subscription
88.8%
Cable/Fiber/DSL
65.6%
Satellite
16%
No Internet
10.2%

Broadband source: Census Reporter ACS 2024 5-year table B28002 snapshot from 2024. Broadband score is a county-level ACS household broadband subscription proxy, not parcel-level service availability. Score is based on the percentage of households with broadband of any type.

Annual Solar Resource
4.22 kWh/m²/day
Winter Solar
1.95 kWh/m²/day
Summer Solar
6.73 kWh/m²/day

Solar source: NASA POWER 2001-2020 solar irradiance climatology for 2001-2020. County-centroid solar proxy using NASA POWER ALLSKY_SFC_SW_DWN annual all-sky surface shortwave downward irradiance. This is a county-level solar resource estimate, not a parcel-level PV design study.

Source glossary and data layer notes

Red Flags

  • Verify building permit path, site plan, setbacks, access permit, septic, well, snow load, covenants, city boundaries, and whether a proposed tiny home or RV is legally occupiable before purchase

Source Trail

County office links, sourced data layers, and profile citations used to build this county-level research summary.

Source glossary

County Profile Citations

Research Status

draft

County-level profile reviewed; parcel-level confirmation still required

This profile is currently marked partially sourced. It is ready for county comparison and early research, but legal claims and parcel-specific decisions should still be verified against county code, planning offices, and local experts.

County FAQ

Frequently Asked Questions

Is Lemhi County a good county for alternative living?

Lemhi County has a Freedom Score of 80, which makes it useful for county-level discovery. Treat that score as a shortlist signal, then verify zoning, building, water, septic, access, and covenant rules for the specific parcel.

Can you live in a tiny home in Lemhi County?

Lemhi County has a tiny home score of 4/5. That score does not approve a tiny home by itself; it means the county is worth researching through planning, zoning, building code, sanitation, and parcel-specific rules.

Can you live in an RV on land in Lemhi County?

Lemhi County has an RV living score of 4/5. RV rules often depend on duration, construction status, sanitation, water, zoning district, and whether the land is inside a subdivision or municipality.

Is Lemhi County good for off-grid living?

Lemhi County has an off-grid score of 5/5. Off-grid feasibility still depends on legal access, septic or OWTS approval, water options, fire risk, winter access, and whether a lawful dwelling can be permitted.

How affordable is land in Lemhi County?

Lemhi County has a land affordability score of 53/100 based on the current county-level dataset. Use this for comparison only, because actual parcel prices can vary by road access, utilities, terrain, water, covenants, and listing quality.

Who is Lemhi County best suited for?

Based on the current profile, Lemhi County is best suited for Salmon area rural land research, mountain county off-grid screening, buyers who need visible building resources. The best fit can change once you narrow from county-level research to a specific property.

What should I verify before buying land in Lemhi County?

Before buying, confirm zoning, building permits, legal access, road maintenance, water rights or well eligibility, septic feasibility, wildfire requirements, floodplain issues, mineral rights, and any HOA, POA, subdivision, or covenant restrictions.

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