James Island councilors endorse phased approach to accessory dwelling units, with compliance and flood safeguards

James Island officials on the evening of the town—s accessory dwelling units workshop outlined a phased policy path that would allow some existing ADUs to be legally recognized while limiting new density increases and requiring building- and flood-code compliance.

The council, led by Mayor Bridal Lyon, directed staff to prepare an ordinance and application process that would (a) grandfather long-standing ADUs that predate the town—s recent records, (b) provide a path for legally permitted accessory structures to be converted into ADUs with Board of Zoning Appeals (BZA) review, and (c) require any conversions to meet Charleston County building codes and the town—s flood and stormwater standards. Council members said they wanted the conversions to match the character of the primary residence and to minimize new impervious surface where possible.

Why it matters: James Island officials framed the changes as a tool to add modest workforce housing and help longtime residents keep their homes while avoiding wholesale increases in lot density. At the same time, the town emphasized safety and compliance: conversions that trigger substantial improvement rules in flood-prone areas can require elevation or other costly work, a factor the council said must guide any policy.

Council discussion and staff guidance

Mayor Bridal Lyon opened the workshop and framed it as focused on ADUs rather than short-term rentals. Councilwoman Dr. Cynthia Menon, Councilman Mullenax and Councilman Dodson joined the discussion; Councilman Bowles was absent.

Kristen Crane, Planning Director, explained zoning and coverage rules in the RSL (residential single-family low) district and the town—s supplemental stormwater…