D.C. Code § 47-2883.01

The Council of the District of Columbia is authorized, in connection with the licensing of persons engaged in the home improvement business, whether as principal, agent, salesman, employee, or otherwise, to require the furnishing of bond as a condition to the issuance of such license. For the purposes of this part, the term “home improvement business” means the repair, remodeling, alteration, conversion, or modernization of, or addition to, residential property, all as may be more particularly defined in regulations promulgated by the Council. Such bonding may be required notwithstanding the fact that a person may also be subject to the bonding requirements of any other law.