California Code, Welfare and Institutions Code - WIC § 15755

A law enforcement agency may seek a search warrant from a magistrate pursuant to the procedures set forth in Chapter 3 (commencing with Section 1523) of Title 12 of Part 2 of the Penal Code to enable a peace officer to have access to, and to inspect, premises if a county welfare worker has been denied access to the premises by the person or persons in possession of the premises and there is probable cause to believe an elder or dependent adult on those premises is subject to abuse.  While executing the search warrant the peace officer may allow a county welfare worker, or any other appropriate person, to accompany him or her.