Tiny Homes Zoning — State ProfileReviewed 2026-08-23
Can you put a tiny home in Alabama?
Current tiny-home-on-wheels and ADU rules for Alabama, sourced and dated — plus verified local builders.
GENERALLY ALLOWED
Alabama — Broadly permissive outside cities, with named Appendix Q counties (verified 2026-08)
Tiny home on wheelsNo statewide tiny-home law and no statewide building code at all — this is a stronger statement than 'many counties have no ordinance,' since Alabama itself has never adopted one. Many rural counties have no building department, which allows tiny homes by default in practice.
ADU / accessory unitThis corrects an earlier draft that implied Birmingham and Huntsville were where ADU access was concentrated — in practice those cities enforce traditional minimum house sizes that make tiny homes difficult as primary residences. The more useful markers are specific counties that have adopted IRC Appendix Q for tiny homes: Baldwin, Madison, Mobile, and Russell. Jefferson County separately allows ADUs up to 200 sq ft in designated zones.
Minimum square footageNone outside city limits in unzoned counties; Appendix Q counties define a tiny home as 400 sq ft or less
Foundation requirementDepends on county; wheeled units are commonly classified as campers/RVs and restricted from permanent residential use in most counties
Local notesAbsence of county zoning isn't the same as absence of all rules — septic, well, and floodplain permits can still apply even where land-use zoning doesn't. Baldwin, Madison, Mobile, and Russell counties are the concrete, named starting points for a foundation-built tiny home.
!Zoning is set by your specific city or county, not the state as a whole. Use this as a starting point, then confirm with the local building or planning department before you buy land or start a build. Not legal advice.
Last reviewed 2026-08-23