California Code, Probate Code - PROB § 3071

(a) In case of a transaction for which the joinder or consent of both spouses is required by Section 1100 or 1102 of the Family Code or by any other statute, if one or both spouses lacks legal capacity for the transaction, the requirement of joinder or consent shall be satisfied as provided in this section.

(b) Where one spouse has legal capacity for the transaction and the other spouse has a conservator, the requirement of joinder or consent is satisfied if both of the following are obtained:

(c) Where both spouses have conservators, the joinder or consent requirement is satisfied by the joinder or consent of each such conservator given in compliance with Section 3072.

(d) In any case, the requirement of joinder or consent is satisfied if the transaction is authorized by an order of court obtained in a proceeding pursuant to Chapter 3 (commencing with Section 3100).