Single Family/Duplex Dwelling — New — Revision 6-1-23: Revised ARCH plans -- New Single Family Residence - detached garage to be permitted separately as an Accessory Structure. ZONING CONDITIONS: Tree barricade required: 47" Oak - 20' minimum clearance required. Tree barricade must be installed prior to beginning construction and must be maintained throughout construction. Send photo of barricade to craiga@charleston-sc.gov for confirmation.