Application of Scott Giering, as amended, pursuant to 11 DCMR Subtitle X, Chapter 9, for special exceptions under Subtitle E §§ 205.5 and 5201 from the rear addition requirements of Subtitle E § 205.4, the lot occupancy requirements of Subtitle E § 304.1, the rear yard requirements of Subtitle E § 306.1, and from the nonconforming structure requirements of Subtitle C § 202.2, to construct a two-story rear addition to an existing principal dwelling unit in the RF-1 Zone at premises 744 Hobart Place N.W. (Square 2888, Lot 117).