Cal. CIV § 682.1

(a) (1) Community property of spouses, when expressly declared in the transfer document to be community property with right of survivorship, and which may be accepted in writing on the face of the document by a statement signed or initialed by the grantees, shall, upon the death of one of the spouses, pass to the survivor, without administration, pursuant to the terms of the instrument, subject to the same procedures, as property held in joint tenancy. Prior to the death of either spouse, the right of survivorship may be terminated pursuant to the same procedures by which a joint tenancy may be severed.

(2) Part 1 (commencing with Section 5000) of Division 5 of the Probate Code and Chapter 2 (commencing with Section 13540), Chapter 3 (commencing with Section 13550), and Chapter 3.5 (commencing with Section 13560) of Part 2 of Division 8 of the Probate Code apply to this property.

(3) For the purposes of Chapter 3 (commencing with Section 13550) of Part 2 of Division 8 of the Probate Code, this property shall be treated as if it had passed without administration under Part 2 (commencing with Section 13500) of Division 8 of the Probate Code.

(b) This section does not apply to a joint account in a financial institution to which Part 2 (commencing with Section 5100) of Division 5 of the Probate Code applies.

(c) This section shall become operative on July 1, 2001, and shall apply to instruments created on or after that date.