CA Prob Code Section 5666

(a)

Chapter 2 (commencing with Section 5010) of Part 1 applies to a revocable transfer on death deed of community property.

(b)

For the purpose of application of Chapter 2 (commencing with Section 5010) of Part 1 to a revocable transfer on death deed of community property, written consent to the deed, revocation of written consent to the deed, or modification of the deed, is ineffective unless recorded within the time required by that chapter for execution or service of the written consent, revocation, or modification.