Pursuant to 11 DCMR § 3104.1, for a special exception to allow a rear deck and trellis addition to an existing one-family row dwelling under section 223, not meeting the lot occupancy (section 403), rear yard (section 404), and court (section 406) requirements in the R-4 District at premises 58 Rhode Island Avenue, N.W. (Square 3111, Lot 24).