Cal. Corporations Code § 28108

Before any applicant for a license is issued a license, the applicant and each parent and subsidiary of the applicant shall file, and each person that becomes a parent or subsidiary of a licensee shall file, not less than 30 days after becoming a parent or subsidiary of the licensee, with the commissioner, in the form the commissioner may by regulation or order require, an irrevocable consent appointing the commissioner to be the person’s attorney-in-fact to receive service of any lawful process in any noncriminal judicial or administrative proceeding against the person, or the person’s successor, executor, or administrator, which arises under this division or under any regulation or order issued under this division after the consent has been filed, with the same force and validity as if served personally on the person. Service may be made by leaving a copy of the process at any office of the commissioner, but the service is not effective unless (a) the party making the service, who may be the commissioner, forthwith sends notice of the service and a copy of the process by registered or certified mail to the person served at the person’s last address on file with the commissioner, and (b) an affidavit of compliance with this section by the party making service is filed on or before the return date, if any, or within that further time as the court, in the case of a judicial proceeding, or the administrative agency, in the case of an administrative proceeding, allows.