Tiny home rules in Rutherford County, TN — 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.
There is no separate tiny-home rule in unincorporated Rutherford County. A permanent tiny dwelling is regulated either as a single-family home or, on a lot with an existing house, as an accessory dwelling unit, and must meet the 300-square-foot minimum and adopted building code.
The Rutherford County Zoning Ordinance has no dedicated tiny-home category. A permanent tiny house on its own lot is treated as a single-family dwelling and must meet the underlying district standards; a second small dwelling on a lot that already has a house is an accessory dwelling unit under Section 1101 Q. In either case it must provide at least the 300-square-foot minimum dwelling area required by the building codes in effect for Rutherford County and comply with setbacks, septic/utility capacity, and the one-acre ADU minimum where an ADU is involved. A tiny house on wheels is generally treated as a recreational vehicle, not a permanent dwelling. Cities set their own tiny-home rules; confirm with Planning before building.
Occupying a tiny structure that does not meet the minimum dwelling area or building code, or an unapproved second unit, is a zoning violation and misdemeanor fined as prescribed by Tennessee statutes, and occupancy can be ordered to cease.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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