Pursuant to 11 DCMR Subtitle X, Chapter 9, for special exceptions from the retail parking requirements of Subtitle C § 701.5, the retail loading requirements of Subtitle C § 901.1, the court requirements of Subtitle G § 202.1, the lot occupancy requirements of Subtitle G § 404.1, and the rear yard requirements of Subtitle G § 405.2, to allow the rehabilitation of, and addition to, a contributing historic structure for conversion to a mixed-use building with first and second floor retail uses, and eight residential units in the MU-4 Zone at Square 420, Lot 38.