CA Civ Proc Code Section 995.250

If a statute allows costs to a party in an action or proceeding, the costs shall include all of the following:

(a)

The premium on a bond reasonably paid by the party pursuant to a statute that provides for the bond in the action or proceeding.

(b)

The premium on a bond reasonably paid by the party in connection with the action or proceeding, unless the court determines that the bond was unnecessary.