772.1 In a Commercial District, no building or portion of a building devoted to a residential use, including accessory buildings but excluding hotels, shall occupy the lot upon which it is located in excess of the percentage of lot occupancy in the following table:

ZONE DISTRICT	MAXIMUM PERCENTAGE OF LOT OCCUPANCY
C-1	60%
C-2-A	60%
C-3-A	75%
C-2-B, C-2-B-1, C-2-C	80%
C-3-B, C-3-C, C-4, C-5 (PAD)	100%

SOURCE: § 5302.1 of the Zoning Regulations, effective May 12, 1958; as amended by Final Rulemaking published at 27 DCR 2226, 2227 (May 23, 1980); as amended by Final Rulemaking published at 47 DCR 9741-43 (December 8, 2000), incorporating by reference the text of Proposed Rulemaking published at 47 DCR 8335, 8410-11 (October 20, 2000); as amended by Final Rulemaking published at 62 DCR 5190 (April 24, 2015).