Application of Jay M. Eisenberg Trustee c/o Museles, pursuant to 11 DCMR Subtitle X, Chapter 9, for a special exception under Subtitle C § 1504, from the penthouse setback requirements of Subtitle C § 1502, and pursuant to Subtitle X, Chapter 10, for an area variance from the nonconforming structure requirements Subtitle C § 202.1 to increase the nonconforming lot occupancy, to construct a roof deck on an existing accessory structure in the R-1-B Zone at premises 1814 24th Street, N.W. (Square 2506, Lot 38).