Cal. Gov. Code § 65585.01

In any suit brought to enforce either this article or any state law listed under subdivision (j) of Section 65585, the department and the office of the Attorney General shall each have the unconditional right to intervene under subparagraph (A) of paragraph (1) of subdivision (d) of Section 387 of the Code of Civil Procedure. The office of the Attorney General shall have this unconditional right whether intervening in an independent capacity or pursuant to a notice or referral from the department.