Cal. Rev. & Tax. Code § 20630
(b) Upon verification of the eligibility requirements set forth in Section 20630.5, the Controller shall mail the claimant a Notice of Election to Postpone which shall be in the form and contain such information as the Controller may prescribe. Accompanying the notice shall be a statement explaining that in order for the claimant to postpone all or part of the property taxes, the Notice of Election to Postpone must be mailed to the Controller with the following: