Cal. Ins. Code § 7046
After the commissioner has granted tentative approval of any such application, a county mutual fire insurer that shall meet the financial requirements applicable to other insurers under Article 3 (commencing with Section 699), Chapter 1, Part 2, Division 1, may by the majority vote of those of its policyholders voting at a meeting duly called for the purpose, elect to transform itself into a general mutual insurer as defined in Chapter 4 (commencing with Section 4010) of Part 1, Division 2 and amend its articles of incorporation and bylaws to conform to, cover, and enjoy any or all of the provisions, powers, rights, and privileges of such a mutual insurer, notwithstanding the restrictions or limitations of any other provision of law, including, but not limited to, Section 900 of the Corporations Code. No such transformed county mutual fire insurer may engage in the business of life, title, mortgage, or mortgage guarantee insurance.
Ca. Ins. Code § 7046