D.C. Mun. Regs. tit. 22-C, § 5200
5200.1 A medical cannabis business, except for a courier license, shall not locate within three hundred feet (300 ft.) of a preschool, primary or secondary school, or recreation center unless the main entrance to the preschool, primary, or secondary school, or recreation center, or the nearest property line of the school or recreation center, is actually on or occupies ground zoned commercial or industrial according to the official atlases of the Zoning Commission of the District of Columbia.
5200.2 No new retailer license shall be issued for a location that is within four hundred feet (400 ft.) of another retailer.
5200.3 An academy or other facility providing educational services operated by the Department of Youth Rehabilitation Services or the D.C. Department of Corrections at a residential facility subject to mandatory detention at the facility shall not be deemed to be a school.
SOURCE: Emergency and Third Proposed Rulemaking published at 58 DCR 3299 (April 15, 2011)[EXPIRED]; as amended by Emergency and Fourth Proposed Rulemaking published at 58 DCR 7207 (August 12, 2011)[EXPIRED]; as amended by Final Rulemaking published at 58 DCR 10128, 10172 (December 2, 2011); as amended by Final Rulemaking published at 64 DCR 12676 (December 15, 2017); as amended by Final Rulemaking published at 66 DCR 10217 (August 9, 2019); as amended by Final Rulemaking published at 73 DCR 002136 (February 20, 2026).