D.C. Mun. Regs. tit. 11, r. 11-720
The Community Business Center (C-2) District is divided into C-2-A, C-2-B, C 2-B-1, and C-2-C Districts.
The C-2-A District is designed to provide facilities for shopping and business needs, housing, and mixed uses for large segments of the District of Columbia outside of the central core.
The C-2-A Districts shall be located in low and medium density residential areas with access to main highways or rapid transit stops, and shall include office employment centers, shopping centers, and medium-bulk mixed use centers.
The C-2-A District shall permit development to medium proportions.
The C-2-A District shall accommodate a major portion of existing commercial strip developments.
The C-2-B and C-2-B-1 Districts are designated to serve commercial and residential functions similar to the C-2-A District, but with high-density residential and mixed uses.
The C-2-B and C-2-B-1 Districts shall be compact and located on arterial streets, in uptown centers, and at rapid transit stops.
In the C-2-B and C-2-B-1 Districts, building use may be entirely residential or a mixture of commercial and residential uses.
The C-2-C District is designed to serve commercial and residential functions similar to the C-2-A District, but with higher density residential and mixed uses.
The C-2-C District is also designated for those areas previously zoned C-2-B, where the Zoning Commission had permitted a maximum floor area ratio of six (6.0).
The C-2-C Districts shall be compact and located in or near the Central Employment Area.
In the C-2-C District, buildings may be entirely residential, or may be a mixture of commercial and residential uses.
Except as provided in Chapters 20 through 25 of this title, in a C-2 District, no building or premises shall be used and no building shall be erected or altered that is arranged, intended, or designed to be used except for one (1) or more of the uses listed in §§ 721, 722, and 726 through 734.
D.C. Mun. Regs. tit. 11, r. 11-720