About 1 Central Avenue Gaithersburg, MD The Applicant, One Central LLC, has submitted zoning map amendment application Z-9358-2022 and associated schematic development plan application SDP-9355-2022, proposing to rezone 1 Central Avenue and surrounding lots from R-A (Low-Density Residential) to CD (Corridor Development) and redevelop with residential uses. The schematic development plan proposes 72 stacked townhouse (2-over-2) units along with green amenity space.