ADU Laws in South Carolina (2026)
South Carolina state ADU law details, key provisions, preemption status, and recent legislative changes for accessory dwelling units.
Law Name
State ADU Law
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
Yes
Key Provisions
South Carolina does not have a statewide ADU law as of 2026
ADU regulation is left entirely to local municipalities and counties
South Carolina Code of Laws Title 6 (Local Government) grants municipalities and counties broad zoning authority
Charleston, Columbia, Greenville, and Myrtle Beach set their own local ADU rules
South Carolina's coastal communities face unique housing supply pressures but address them through local regulations
South Carolina has not enacted statewide housing preemption as of 2026
Official Sources
Source: South Carolina State ADU Law. Last verified April 5, 2026. View source