D.C. Mun. Regs. tit. 17, r. 17-4103
If a person who was sent a notice of a proposed action pursuant to § 4102 does not mail or deliver a request for a hearing within the time and in the manner required under that section, a board may, without a hearing, take the action contemplated in the notice.
If a person scheduled for a hearing does not appear for the hearing, and no continuance is granted, a board may receive evidence and hear testimony and may render a decision on the basis of evidence before it. However, the board, prior to rendering a decision, may, upon written request of the respondent and payment of the required fee, send a copy of the transcript or summary of the hearing to the respondent and request proposed findings of fact and conclusions of law from the respondent.
A board shall inform the respondent, the Corporation Counsel, and the Director of an action taken under this section.
D.C. Mun. Regs. tit. 17, r. 17-4103