Application of Delta Sigma Theta Sorority, Inc., pursuant to 11 DCMR Subtitle Y, § 705.1, for a two-year time extension of BZA Order No. 19131A approving a variance from the non-profit organization requirements under § 217.1(b), and a special exception from the non-profit organization requirements under § 217.1, to permit the use of an existing residential building for non-profit office use in the D/DC/R-5-B District at premises 1711 New Hampshire Avenue N.W. (Square 154, Lot 26).