Exceptions to the development standards of this chapter shall be permitted as a special exception if approved by the Board of Zoning Adjustment under Subtitle X, Chapter 9, and subject to the provisions and limitations of Subtitle D §§ 5201 and 5205, except that a proposed expansion of an existing non-residential use in excess of ten percent (10%) of gross floor area, shall be subject to the conditions of Subtitle U § 205.2.
D.C. Mun. Regs. tit. 11, r. 11-D909