Tiny home rules in Monroe County, NY — 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.
NY State Residential Code Appendix Q allows tiny homes ≤400 sq ft with reduced ceiling (6'8") and loft (6'2") requirements. Foundation-built tiny homes treated as dwellings. THOW (tiny on wheels) treated as RVs under NY VTL. Monroe County towns vary in ADU acceptance.
NY State Residential Code Appendix Q (2020 edition) provides building standards for tiny houses ≤400 sq ft including reduced ceiling heights (6'8" main floor, 6'2" loft), ladder and alternating-tread stair allowances. Foundation-built tiny homes are treated as single-family dwellings and must meet local minimum dwelling size (often 600-800 sq ft in R-1 zones). Tiny homes on wheels (THOW) classified as RVs under NY VTL — may be occupied at RV parks but not permanent residential lots. As of 2025 NY has no statewide ADU preemption (S5172A pending). Rochester permits accessory dwelling units under Zoning Code §120-81 with size limits. Pittsford and Brighton allow ADUs via special use permit. Utility connections (water, sewer, electric) per municipal code; on-site wastewater via Monroe County Department of Public Health.
Unpermitted dwelling: removal or retroactive permit. Occupying without C of O: order to vacate. THOW as permanent residence: zoning violations, removal order.
Monroe County, NY
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Monroe County, NY
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Monroe County, NY
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Monroe County, NY
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Monroe County, NY
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Monroe County, NY
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See how Monroe County's tiny homes rules stack up against other locations.
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