Cal. Rev. & Tax. Code § 3700
Upon providing notice to the board of supervisors as required by Section 3698, the tax collector shall forward one copy to the clerk or secretary of the governing board of each taxing agency, other than the county, having the right to levy taxes or assessments on the property and may forward one copy to each nonprofit organization that has submitted, within one year prior to the next scheduled tax sale or prior to July 31 of the current calendar year, a written request to the tax collector for notification. The copy or copies shall be mailed, sent electronically, or delivered at least 30 days before the first publication or posting of the notice of intended sale. However, where the tax collector has on file a consent from each taxing agency, the tax collector may proceed to publish or post the notice of sale.
Ca. Rev. and Tax. Code § 3700