24 C.F.R. § 26.29
The following definitions apply to subpart B of this part:
Complaint means the notice from HUD alleging violations of a HUD statute and/or regulation, citing the legal authority upon which it is issued, stating the relief HUD seeks, and informing a respondent of his or her right to submit a response to a designated office and to request an opportunity for a hearing before an Administrative Law Judge.
Docket Clerk means the Docket Clerk of the Office of Hearings and Appeals, located at the following address-409 Third Street, SW., Second Floor, Washington, DC 20024; mailing address is 451 7th Street, SW., Room B-133, Washington, DC 20410.
Respondent, unless otherwise identified by other governing statute, rule, or regulation, is the party against whom the administrative action is taken.
Response means the written response to a complaint, admitting or denying the allegations in the complaint and setting forth any affirmative defense and any mitigating factors or extenuating circumstances. The response shall be submitted to the division of the Office of General Counsel that initiates the complaint or to such other office as may be designated in the complaint. A response is deemed a request for a hearing.
24 C.F.R. §26.29