A power of termination shall be exercised only by notice or by civil action and, if the power of termination is of record, the exercise shall be of record. The notice shall be given, and any civil action shall be commenced, within five years after breach of the restriction to which the fee simple estate is subject, or such longer period as may be agreed to by the parties by a waiver or extension recorded before expiration of that period.
Source:
Section 885.050, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=885.050..