Cal. Code of Civil Procedure § 488.020

(a) A writ of attachment shall be directed to a levying officer in the county in which property of the defendant described in the writ may be located and to any registered process server. (b) Upon the receipt of written instructions from the plaintiff’s attorney of record or, if the plaintiff has no attorney of record, from the plaintiff, the levying officer to whom the writ is directed and delivered shall levy the writ without delay in the manner provided in this chapter on the property described in the writ or so much thereof as is clearly sufficient to satisfy the amount to be secured by the attachment. The levying officer is not liable for a determination made in good faith under this subdivision. (c) If a copy of the summons and complaint has not previously been served on the defendant, the instructions to the levying officer shall instruct the levying officer to make the service at the same time the levying officer serves the defendant with a copy of the writ of attachment.