24 CFR § 26.30 - Service and filing.

(a) Filing. Unless otherwise provided by statute, rule, or regulation, all documents shall be filed with the Docket Clerk. Filing may be by delivery, first-class mail, overnight delivery, facsimile transmission, or electronic means; however, the ALJ may place reasonable limits on filing by facsimile transmission or electronic means. All documents shall clearly designate the docket number and title of the proceeding. Duplicate copies are not required unless ordered by the ALJ.

(b) Service. One copy of all documents filed with the Docket Clerk shall be served upon each party by the persons filing them and shall be accompanied by a certificate of service stating how and when such service has been made. Service may be made by delivery, first-class mail, overnight delivery, facsimile transmission, or electronic means; however, the ALJ may place reasonable limits on service by facsimile transmission or electronic means. Documents shall be served upon a party's address of residence or principal place of business, or, if the party is represented by counsel, upon counsel of record at the address of counsel. Service is complete when handed to the person or delivered to the person's office or residence and deposited in a conspicuous place. If service is by first-class mail, overnight delivery, facsimile transmission, or electronic means, service is complete upon deposit in the mail or upon electronic transmission.