Tiny home rules in Lexington, KY — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Lexington allows tiny homes on permanent foundations as primary dwellings if they meet the Kentucky Residential Code minimum of 120 square feet for the first habitable room and comply with LFUCG zoning minimum dwelling size requirements. Tiny homes on wheels (THOWs) are classified as recreational vehicles under Kentucky law and cannot be used as permanent residences on residential lots. Accessory dwelling units (ADUs) are permitted in limited circumstances on larger lots, and all tiny homes require standard building permits, plumbing connections, and zoning approval.
Lexington-Fayette Urban County Government regulates tiny homes through a combination of the LFUCG Zoning Ordinance and the Kentucky Residential Code (KRC), which adopts the 2018 IRC with amendments. Site-built tiny homes on permanent foundations must meet the KRC minimum habitable room size of 120 sq ft and ceiling height of 7 feet, and must comply with LFUCG minimum dwelling size requirements that vary by zoning district (often 800-1,200 sq ft in R-1 zones). Tiny homes on wheels registered as RVs with the Kentucky Transportation Cabinet cannot be used as permanent dwellings on residential lots under LFUCG ordinance, which prohibits living in RVs or manufactured homes outside approved mobile home parks. Manufactured homes built to HUD standards are permitted in specific zones and must be installed on permanent foundations with skirting. The LFUCG has explored ADU reforms but as of 2026 detached ADUs are only permitted in limited zones and require a conditional use permit from the Board of Adjustment. All tiny homes require building permits, electrical and plumbing permits, connection to LFUCG sanitary sewer or an approved septic system (in unincorporated areas), and payment of impact fees. In historic districts, tiny home exteriors require BAR approval. HOAs in Hamburg, Beaumont, and Masterson Station typically prohibit dwellings below certain square footage through CC&Rs, which can be more restrictive than LFUCG minimums.
Contact your local code enforcement office for specific penalty information.
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