Bolthole Index county-legal census · checked 2026-09-23
1 of Montana's 56 counties — 2% — allow tiny homes as a dwelling. That is the 23rd-largest count of any state. The strongest of them on the Bolthole Index is Fallon County (47/100). Every entry below cites the county’s own official source.
Rules change, and cities inside these counties set their own — treat this as a verified starting point, not legal advice. All 393 counties nationwide → Montana: no building codes → Montana: no zoning → Montana: no codes, no zoning → Montana: owner-builder → Montana: no minimum home size → Full Montana profile →
1 of 56 Montana counties · sorted by Index score
Tiny-home occupancy under county land-use zoning in unincorporated Fallon County. The county statement concerns zoning only; subdivision regulations, growth policy, airport affe…
Commission Minutes – June 27 – July 1, 2022 – Fallon County ↗Every county here has a full profile — water, land prices, hazard safety, seclusion, and the rest of its building rules. See the Montana state page for all 56 counties ranked, or go back to the national list.
Off-grid gear
Building on land in one of these Montana counties? The kit we'd start with:
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General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
