Cal. Rules of Court, rule 8.816

(a) Address and other contact information of record

(1) Except as provided in (2), the cover-or first page if there is no cover-of every document filed in the appellate division must include the name, mailing address, telephone number, fax number (if available), e-mail address (if available), and California State Bar number of each attorney filing or joining in the document, or of the party if he or she is unrepresented. The inclusion of a fax number or e-mail address on any document does not constitute consent to service by fax or e-mail unless otherwise provided by law.

(2) If more than one attorney from a law firm, corporation, or public law office is representing one party and is joining in the document, the name and State Bar number of each attorney joining in the document must be provided on the cover. The law firm, corporation, or public law office representing each party must designate one attorney to receive notices and other communication in the case from the court by placing an asterisk before that attorney's name on the cover and must provide the contact information specified under (1) for that attorney. Contact information for the other attorneys from the same law firm, corporation, or public law office is not required but may be provided.

(3) In any case pending before the appellate division, the appellate division will use the mailing address, telephone number, fax number, and e-mail address that an attorney or unrepresented party provides on the first document filed in that case as the mailing address, telephone number, fax number, and e-mail address of record unless the attorney or unrepresented party files a notice under (b).

(b) Notice of change

(1) An attorney or unrepresented party whose mailing address, telephone number, fax number, or e-mail address changes while a case is pending must promptly serve and file a written notice of the change in the appellate division in which the case is pending.

(2) The notice must specify the title and number of the case or cases to which it applies. If an attorney gives the notice, the notice must include the attorney's California State Bar number.

(c) Multiple addresses or other contact information

If an attorney or unrepresented party has more than one mailing address, telephone number, fax number, or e-mail address, only one mailing address, telephone number, fax number, and e-mail address may be used in a given case.