Charleston · Other
Can I legally add an ADU to a Sullivan's Island house?
An accessory dwelling unit on Sullivan's Island lives or dies by that town's own zoning ordinance and flood elevation rules, not a general state law. Beach communities in the Lowcountry often cap lot coverage and height, and Sullivan's Island's historic district review adds another layer for older homes. Confirm with the town's building department before you budget for one, and Brian Beatty can flag which streets have already had ADUs approved.
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Ask Brian directly. No form, no obligation, and a real answer even when the answer is that now is not the time to sell.