How many U.S. counties have no building codes?

662 of America's 3,143 counties (21%) do not require a residential building permit in their unincorporated areas, based on each county's own official sources (checked 2026-10-03). Another 448 require permits only in limited cases such as floodplains.

Is it legal to build a house without a permit in these counties?

In the unincorporated areas of these counties, the county itself does not require a residential building permit — but state electrical, septic, and floodplain rules can still apply, and cities inside the county set their own rules. Always confirm with the county before you buy or build; each state page below links to every county source.

Which states have the most counties with no building codes?

Texas (170), Missouri (78), Arkansas (59), Oklahoma (55), Alabama (49).

Bolthole Index county-legal census · checked 2026-10-03

U.S. Counties With No Building Permit Requirement

662 of America's 3,143 counties — 21% of the country — do not require a residential building permit in their unincorporated areas. No national agency tracks this, so we checked every county's own official sources, one by one. This is the complete list, each entry cited to the county's website.

Method: our scout checked official county sources (county websites, codes, planning departments) for all 3,143 counties, and the research fleet has since re-checked many with verbatim quotations. Each state page cites every county’s own page. Rules change — treat this as a verified starting point, not legal advice.

662 counties across 25 states — open a state for its full cited list

Texas170 of 254 Missouri78 of 115 Arkansas59 of 75 Oklahoma55 of 77 Alabama49 of 67 Montana37 of 56 Kansas33 of 105 Kentucky29 of 120 Tennessee22 of 95 Illinois20 of 102 West Virginia20 of 55 Ohio18 of 88 Alaska14 of 30 Iowa12 of 99 Wyoming9 of 23 South Dakota8 of 66 North Dakota6 of 53 Vermont6 of 14 Indiana4 of 92 Nebraska4 of 93 Colorado3 of 64 Georgia3 of 159 Idaho1 of 44 Mississippi1 of 82 Nevada1 of 17

Top 50 by Index Score

Keep exploring

Every county here has a full profile — water, land prices, hazard safety, seclusion, and the rest of its building rules. Start from the best states to live off-grid, the cheapest states for off-grid land, or search your own spot.

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.