Bolthole Index county-legal census · checked 2026-07-01
13 of Iowa's 99 counties — 13% — require no residential building permit and have no county-wide zoning in their unincorporated areas. That is the 13th-largest count of any state. The strongest of them on the Bolthole Index is Lucas County (76/100). 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 623 counties nationwide → Iowa: no building codes → Iowa: no zoning → Full Iowa profile →
13 of 99 Iowa counties · sorted by Index score
Lucas County's list of enacted ordinances contains no countywide building code or general building-permit ordinance; Iowa has no statewide residential building code absent local…
Lucas County Iowa - County Ordinances ↗The county's official page states 'the County does not require building permits' in unincorporated Jefferson County (state/national codes may still apply). State overlay (IA): s…
Jefferson County Iowa - Questions ↗Wayne County's services directory lists septic permits but no county building permit, consistent with Iowa having no statewide residential building code unless locally adopted; …
Wayne County - Where Do I Go For ↗The Davis County official site lists no building-permit or planning office; Iowa has no statewide residential building code absent local adoption, so no county building permit i…
Davis County IA - County Offices ↗Union County lists no building/planning department and its ordinance index contains no county residential building code, consistent with Iowa having no statewide residential cod…
Union County, Iowa - Ordinances ↗The county's official ordinance list contains only Wind Turbine and Solar ordinances with no adopted building code or building-permit ordinance; Iowa has no statewide residentia…
Ringgold County Ordinances ↗With the county zoning ordinance rescinded and Iowa having no statewide residential building code, no county building permit is required in unincorporated areas; certain trade p…
Washington County Planning & Development ↗Iowa has no statewide residential building code and Taylor County lists no building or inspection department among its offices, indicating no countywide building permit requirem…
Taylor County Departments ↗The county's official ordinance list contains no county-wide residential building-permit ordinance, consistent with Iowa having no statewide residential building code unless loc…
O'Brien County Board of Supervisors - Ordinances ↗Iowa has no statewide residential building code unless locally adopted; the Chickasaw County Land Use office administers only subdivision and floodplain regulation, with no coun…
Chickasaw County Land Use Office ↗The county's official department list includes no building inspector or building department, consistent with Iowa having no statewide residential building code unless a county l…
Ida County, IA Departments ↗Iowa has no statewide residential building code, and Adair County's official ordinance index shows no adopted countywide building-code or building-permit ordinance (only airport…
Adair County, IA - County Ordinances ↗The county services directory states Hamilton County does not currently require building permits; Iowa has no statewide residential building code. State overlay (IA): statewide …
Hamilton County, Iowa — Services Directory ↗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.
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.
