Application of Aspasia Paroutsas, pursuant to 11 DCMR Subtitle X, Chapter 9, for a special exception under Subtitle D § 5201 from the rear yard requirements of Subtitle D § 306.2, to construct a second story rear addition to an existing, semi-detached principal dwelling unit in the R-3 Zone at premises 2921 28th Street N.W. (Square 2106, Lot 44).