Cal. Civ. Code § 902

If a builder offers an enhanced protection agreement, the builder may choose to be subject to its own express contractual provisions in place of the provisions set forth in Chapter 2 (commencing with Section 896). If an enhanced protection agreement is in place, Chapter 2 (commencing with Section 896) no longer applies other than to set forth minimum provisions by which to judge the enforceability of the particular provisions of the enhanced protection agreement.