Cal. Civil Code § 1697 : Extinction Of Contracts — California Civil Code — Obligations — Modification And Cancellation — Contract not in writing Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session A contract not in writing may be modified in any respect by consent of the parties, in writing, without a new consideration, and is extinguished thereby to the extent of the modification. Ca. Civ. Code § 1697