D.C. Mun. Regs. tit. 17, § 8501
8501.1 Each applicant for an initial license, registration, or certification; renewal of a license, registration, or certification; reinstatement of a license registration or certification; or person going from an inactive status to active status shall obtain a criminal background check. An initial applicant for licensure, registration, or certification who does not undergo a criminal background check shall not be issued a license, registration or certification until the background check has been completed.
8501.2 Criminal background checks shall be conducted in accordance with Metropolitan Police Department (MPD) and Federal Bureau of Investigations (FBI) policies and procedures and in a FBI-approved environment, by means of fingerprint and National Criminal Information Center checks and procedures.
8501.3 The FBI criminal background check shall disclose the criminal history of the prospective applicant for the previous seven (7) years, in all jurisdictions within which the prospective applicant has worked or resided within the seven (7) years prior to the check. The MPD shall conduct a criminal background check that shall disclose misdemeanor violations, if any, of District law.
8501.4 An applicant who is obtaining a license, registration, or certification by endorsement shall not be required to undergo a criminal background check provided that a criminal background check was previously done on the applicant within four (4) years prior to the date of submission of the application.
8501.5 A licensee, registrant, or certification holder shall be required to undergo a subsequent criminal background check every four (4) years from the date of the licensee's registrant's or certification holder's previous background check.
Source: Final Rulemaking published at 56 DCR 6025, 6026 (July 31, 2009).