If the service is on a financial institution, a title insurer or underwritten title company, industrial loan company or savings and loan company, service shall be made at the office or branch that has actual possession of the property levied upon or at which a deposit account levied upon is carried and shall be made upon the officer, manager, or other person in charge of the office or branch at the time of service. (CCP 488.455, 488.460; FIN 6663) If served at a centralized location designated by the financial institution, other than a savings and loan association, the garnishment attaches all accounts at any location.
The word "officer" has been held to mean any other representative of the banking corporation whose duties, functions, and responsibilities are such that service upon him would reasonably inform the bank of such service. (Walters v. Bank of America, 9 CA 2d 46, 53)
A spousal affidavit, fictitious business name statement, and court order to levy on third party account are used exclusively to garnish deposit accounts/safe-deposit boxes.
See 6-05/800.29 (fees) and 6-20/560.31 for additional requirements regarding Open Safe Deposit Box.