Cal. Rev. & Tax. Code § 2700

Notwithstanding Sections 2605, 2606, 2607, 2617, 2618, 2621, and 2624, if so ordered by a resolution of the board of supervisors of any county, this chapter shall be applicable to that county, provided that the resolution shall be adopted prior to the time the county auditor is required to compute and enter on the secured roll the respective amounts due in installments as taxes for the assessment year in which the resolution becomes effective. This chapter shall apply only to that county and shall then apply until otherwise ordered by a resolution of the board of supervisors.