California Code, Probate Code - PROB § 681

(a) Except as provided in subdivision (b), property covered by a special power of appointment is not subject to the claims of creditors of the powerholder or of the powerholder's estate or to the expenses of the administration of the powerholder's estate.

(b) Property subject to a special power of appointment shall be subject to the claims of creditors of the powerholder or of the powerholder's estate or the expenses of administration of the powerholder's estate under either of the following circumstances: