NSW Duplex Development Cost Guide 2026: DA vs CDC Approval Pathways NSW Duplex Development Cost Guide 2026: DA vs CDC Approval Pathways Author: Franz Phan, Senior Planning Consultant, giantA Pty Ltd Published: July 11, 2026 Reading Time: 14 minutes Executive Summary B... BASIX DA approval Development Application cdc-approval duplex greater-sydney Jul 10, 2026