Bolthole Index county-legal census · checked 2026-10-10
7 of Iowa's 99 counties — 7% — allow tiny homes as a dwelling. That is the 17th-largest count of any state. The strongest of them on the Bolthole Index is Jefferson County (77/100). 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 547 counties nationwide → Iowa: no building codes → Iowa: no zoning → Iowa: no codes, no zoning → Iowa: owner-builder → Iowa: rv living → Iowa: no minimum home size → Full Iowa profile →
From the Iowa guide
Iowa RV occupancy answers cover 22 counties: 4 allowed, 6 temporary-only, 10 limited and 2 prohibited; the other 77 counties are unanswered.7 The allowed county-zoning answers are Jefferson County, Lee County, Chickasaw County, Hamilton County; those answers concern unincorporated land and do not settle septic or other approvals.712 Start with the Iowa RV-living list.7
Tiny-home answers also cover 22 counties: 7 allowed, 13 limited and 2 prohibited, leaving 77 unanswered.8 The allowed group starts with Jefferson County, Lee County, Washington County, Chickasaw County, but each county answer has its own scope and conditions.8 Compare the Iowa tiny-home list before choosing a parcel.8
A tiny home proposed as an accessory dwelling has a different route: Iowa requires counties and cities to allow an accessory dwelling on the same lot as a single-family residence in eligible districts, subject to building regulations and statutory conditions.2526 A manufactured or mobile accessory dwelling must be on a permanent foundation and assessed as real property.25
From the Iowa guide, written from the cited official sources and re-checked by an independent reviewer. This is research, not legal advice: confirm with the office before you buy or build.
7 of 99 Iowa counties · sorted by Index score
County land-use regulation of tiny-home occupancy on private land in unincorporated Jefferson County, Iowa. The county's no-zoning statement excludes the City of Fairfield; muni…
Questions - Jefferson County Iowa Government ↗County land-use zoning regulation of occupancy of a tiny home as a dwelling on private land in unincorporated Lee County, Iowa. Lee County has not adopted a county zoning ordina…
Code of Ordinances of Lee County, Iowa, 2017 ↗Tiny-home occupancy on private land in unincorporated Washington County, insofar as county zoning regulation is concerned. The county zoning ordinance was rescinded, so no count…
Zoning Ordinance (Rescinded on September 27, 2013) ↗Occupancy of tiny homes on private land in unincorporated Chickasaw County, Iowa, as a county zoning matter. Chickasaw County has no zoning ordinance in effect, so no county zon…
Land Use Office - Chickasaw County Government - Iowa ↗A tiny house used as an accessory dwelling unit in unincorporated Linn County. The tiny house must be on a permanent foundation and taxed as real estate. It must be a secondary …
Accessory Dwelling Unit Requirements ↗Living in a machine shed or using an accessory-type structure as living quarters in unincorporated Buchanan County. The FAQ does not expressly define or mention tiny homes. If t…
buchanancounty.iowa.gov ↗County land-use zoning treatment of tiny-home occupancy on private land in Hamilton County's unincorporated areas. The county's no-zoning statement does not address state rules,…
hamiltoncounty.iowa.gov ↗Every county here has a full profile — water, land prices, hazard safety, seclusion, and the rest of its building rules. See the Iowa state page for all 99 counties ranked, or go back to the national list.
Off-grid gear
Building on land in one of these Iowa 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.
