Tiny Homes Zoning — State ProfileReviewed 2026-08-23
Can you put a tiny home in Kentucky?
Current tiny-home-on-wheels and ADU rules for Kentucky, sourced and dated — plus verified local builders.
GENERALLY ALLOWED
Kentucky — Broadly permissive outside cities, with real named city programs (verified 2026-08)
Tiny home on wheelsNo statewide tiny-home-on-wheels law; Kentucky has adopted IRC Appendix Q statewide for foundation-built tiny homes (400 sq ft or less). Tiny homes on wheels are classified as RVs and generally limited to RV parks or specially zoned areas. Rural counties are commonly cited as light on zoning, consistent with the pattern across much of the rural South and Midwest.
ADU / accessory unitLouisville (Jefferson County) treats ADUs as a conditional use requiring a permit (roughly $510) and neighbor notification — detached ADUs are capped at 800 sq ft or 30% of the primary home, attached at 50% or 1,000 sq ft, whichever is smaller. Lexington-Fayette (LFUCG) had ADUs effectively banned in nearly all residential zones until a December 2023 zoning amendment opened the door to units up to 800 sq ft, with no owner-occupancy requirement.
Minimum square footageAppendix Q defines a tiny home as 400 sq ft or less statewide for building-code purposes; local ADU caps vary above that
Foundation requirementDepends on county and unit type; Louisville and Lexington are the two best-documented city programs in the state
Local notesLexington's ADU rules have changed multiple times since the 2023 opening — confirm the current maximum square footage directly with the Lexington-Fayette planning department rather than relying on an older figure.
!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