A summons may be served by any person who is at least 18 years of age and not a party to the action. (CCP 414.10) Custodians or keepers may serve the process as deputies. (Los Angeles County Counsel Opinion, May 6, 1952) The plaintiff may not serve the summons, but the plaintiff’s attorney may properly do so. (Sheehan v. All Persons, 80 CA 393)
Generally, the sheriff may serve a summons or citation issued from courts in other states. But in some states the authorization for such services must be specifically given by the court, clerk or sheriff in that state. For further information, refer to 6-07/800.00 Out-of-State Summons.