CA Civ Code Section 3054

(a)

A banker, or a savings and loan association, has a general lien, dependent on possession, upon all property in his or her hands belonging to a customer, for the balance due to the banker or savings and loan association from the customer in the course of the business.

(b)

The exercise of this lien with respect to deposit accounts shall be subject to the limitations and procedures set forth in Section 864 or 6660 of the Financial Code.