D.C. Code § 42-2051

In addition to other authority delegated to it, and in accordance with § 406 of Reorganization Plan No. 3 of 1967, the Council of the District of Columbia is authorized, by regulation, to prohibit the establishment, after the effective date of such regulation, of any horizontal property regime, real estate condominiums project, or other conversion of units in a multiunit structure into a condominium pursuant to this subchapter.