California Code, Financial Code - FIN § 567

If the commissioner finds that a person has conducted, or that there is reasonable cause to believe that a person is about to conduct, business that requires a license issued by the commissioner and that person has not been issued the required license, the commissioner may, without any prior notice or hearing, order the person to cease and desist from conducting any unauthorized business unless and until the person is issued a license to engage in appropriate licensee business.