California Code, Business and Professions Code - BPC § 7028.4

In addition to the remedies set forth in Section 7028.3, on proper showing by (1) a licensed contractor, or an association of contractors, (2) a consumer affected by the violation, (3) a district attorney, or (4) the Attorney General, of a continuing violation of this chapter by a person who does not hold a state contractor's license in any classification, an injunction shall issue by a court specified in Section 7028.3 at the request of any such party, prohibiting such violation.  The plaintiff in any such action shall not be required to prove irreparable injury.