If the period prescribed by statute during which a notice of intent to preserve an interest in real property must be recorded expires before, on, or within five years after the operative date of the statute, the period is extended until five years after the operative date of the statute.
Source:
Section 880.370, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=880.370..