D.C. Mun. Regs. tit. 11, r. 11-1604
The following provisions apply to new buildings, structures, or uses with frontage on M Street S.E. within the CG Overlay.
No driveway may be constructed or used from M Street to required parking spaces or loading berths in or adjacent to a new building.
The streetwall of each new building shall be set back for its entire height and frontage along M Street not less than fifteen (15) feet measured from the face of the adjacent curb along M Street, S.E.
Each new building shall devote not less than thirty-five percent (35%) of the gross floor area of the ground floor to retail, service, entertainment, or arts uses ("preferred uses") as permitted in §§ 701.1 through 701.5 and §§ 721.1 through 721.6 of this Title; provided, that the following uses shall not be permitted: automobile, laundry, drive-through accessory to any use, gasoline service stations, and office uses (other than those accessory to the administration, maintenance, or leasing of the building). Such preferred uses shall occupy 100% of the building's street frontage along M Street, except for space devoted to building entrances or required to be devoted to fire control.
For good cause shown, the Commission may authorize interim occupancy of the preferred use space required by § 1604.4 by non-preferred uses for up to a five (5) year period; provided, that the ground floor space is suitably designed for future occupancy by the preferred uses.
Not less than fifty percent (50%) of the surface area of the streetwall of any new building along M Street shall be devoted to display windows having clear or low-emissivity glass except for decorative accent, and to entrances to commercial uses of the building.
The minimum floor-to-ceiling clear height for portions of the ground floor level devoted to preferred uses shall be fourteen (14) feet.
A building that qualifies as a Capitol South Receiving Zone site under §§ 1709.18 and for which a building permit has been applied for prior to August 31, 2001, shall not be subject to the requirements of this section.
Where preferred use retail space is required under this section and provided, the requirement of 11 DCMR § 633 to provide public space at ground level shall not apply.
D.C. Mun. Regs. tit. 11, r. 11-1604