A provision for a nonprobate transfer of community property on death executed by a married person without the written consent of the person's spouse (1) is not effective as to the nonconsenting spouse's interest in the property and (2) does not affect the nonconsenting spouse's disposition on death of the nonconsenting spouse's interest in the community property by will, intestate succession, or nonprobate transfer.
Ca. Prob. Code § 5020