Tiny home rules in Charleston County, SC — 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.
Charleston County has no separate tiny-home ordinance. A tiny home on a permanent foundation is treated as an accessory dwelling unit or principal dwelling; a manufactured unit is limited to caretaker's quarters in Agricultural districts or temporary use during construction.
The county ZLDR does not use the term tiny home. A small permanent detached dwelling is regulated as an accessory dwelling unit under Sec. 6.5.9 (one per lot, Rural-Area 1,500 sq ft cap, full setbacks). Manufactured Housing Units are governed by Sec. 6.5.10: in Agricultural districts one may be used for a caretaker's quarters, and a unit may be placed temporarily while a permanent structure is under construction (with a zoning permit) but must be removed within 30 days of the Certificate of Occupancy. Movable tiny homes on wheels are RVs, not dwellings, and cannot be used as permanent housing outside a licensed RV park. Municipalities apply their own rules.
Using a manufactured or movable unit as an unpermitted permanent dwelling is a zoning violation enforced under ZLDR Chapter 11; temporary construction units not removed on time are also cited.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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