D.C. Mun. Regs. tit. 11-K, § 407
407.1 No side yard is required; however, if a side yard is provided it shall be no less than eight feet (8 ft.).
SOURCE: Final Rulemaking published at 63 DCR 2447, 3176 (March 4, 2016 – Part 2).
Zoning Regulations of 2016:
Special Purpose Zones
11-K DCMR § 407