24 C.F.R. § 26.15 Service.
Title 24 - Housing and Urban Development
(a) Method of service. Pleadings, motions, and other documents required or permitted under these rules shall be served upon all parties. Whenever these rules require or permit service to be made upon a party represented by an attorney, the service shall be made upon the attorney unless service upon the party is ordered by the hearing officer. Service shall be made by delivering a copy to the person to be served or by mailing it to that person at the last known address. Delivery of a copy within this rule means: handing it to the person to be served; or leaving it at that person's office with a clerk or other person in charge; or, if there is no one in charge, leaving it in a conspicuous place in the office; or, if the office is closed or the person to be served has no office, leaving it at that person's residence of usual place of abode with some person of suitable age and discretion who resides there. Service by mail is complete upon deposit in a mail box or upon posting. (b) Proof of service. Proof of service shall not be required unless the fact of service is put in issue by appropriate motion or objection on the part of the person allegedly served. In these cases, service may be established by written receipt signed by or on behalf of the person to be served, or may be established prima facie by affidavit or certificate of service of mailing.
Title 24: Housing and Urban Development
PART 26—HEARING PROCEDURES
Subpart A—Hearings Before Hearing Officers
Pleadings and Motions
§ 26.15 Service.