Cal. Civil Code § 884.030

(a) Except as otherwise provided in this section, this chapter applies on the operative date to all recorded instruments that create or give constructive notice of options to purchase real property, whether executed or recorded before, on, or after the operative date. (b) This chapter shall not cause an option that expires according to its terms within one year before, on, or within one year after the operative date of this chapter to expire of record until one year after the operative date. (c) This chapter shall not cause an option that provides no expiration date and that is recorded before the operative date of this chapter to expire of record until five years after the operative date of this chapter. (d) Nothing in this chapter affects a recorded instrument that has ceased to be notice to any person or put any person on inquiry with respect to the exercise or existence of an option pursuant to former Section 1213.5 before the operative date of this chapter.