Bolthole Index county-legal census · checked 2026-09-11
1 of Montana's 56 counties — 2% — set no minimum dwelling size. That is the 13th-largest count of any state. The strongest of them on the Bolthole Index is Pondera County (70/100). 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 60 counties nationwide → Montana: no building codes → Montana: no zoning → Montana: no codes, no zoning → Montana: owner-builder → Full Montana profile →
1 of 56 Montana counties · sorted by Index score
Zoning-based minimum dwelling-size requirements in unincorporated Pondera County. This absence applies to county zoning regulations only. The City of Conrad and Town of Valier h…
2024 Pondera County Growth Policy ↗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.
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.
