Cal. Civ. Code § 17975.9

While it is the intent of the Legislature in enacting this article to provide an expedient means by which to provide relocation funds to tenants, nothing in this article shall be construed to limit the rights available to owners, designated agents, or tenants under any other provision of law. Furthermore, nothing in this article shall be construed to deprive an owner of procedural due process rights guaranteed by law, including, but not limited to, a right to file a judicial action against a local enforcement agency that has failed to proceed in a manner required by law.