The warranty under this chapter shall be in addition to, and not in derogation of, all other rights and privileges which the buyer may have under any other law or instrument. The contractor, manufacturer, or dealer shall not require the buyer to waive his or her rights under this chapter, and any waiver of these rights shall be deemed contrary to public policy and shall be unenforceable and void.
Source:
Section 1797.4, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=1797.4..