Cal. Family Code - FAM § 7840. Section 7840.
(a)
A petition may be filed under this part for an order or judgment declaring a child free from the custody and control of either or both parents by any of the following:
(1)
The State Department of Social Services, a county welfare department, a licensed private or public adoption agency, a county adoption department, or a county probation department which is planning adoptive placement of the child with a licensed adoption agency.
(2)
The State Department of Social Services acting as an adoption agency in counties which are not served by a county adoption agency.
(b)
The fact that a child is in a foster care home subject to the requirements of Chapter 3 (commencing with Section 1500) of Division 2 of the Health and Safety Code does not prevent the filing of a petition under subdivision (a).
(c)
The county counsel or, if there is no county counsel,
the district attorney of the county specified in Section 7845 shall, in a proper case, institute the proceeding upon the request of any of the state or county agencies mentioned in subdivision (a). The proceeding shall be instituted pursuant to this part within 30 days of the request.
(d)
If, at the time of the filing of a petition by a department or agency specified in subdivision (a), the child is in the custody of the petitioner, the petitioner may continue to have custody of the child pending the hearing on the petition unless the court, in its discretion, makes such other order regarding custody pending the hearing as it finds will best serve and protect the interest and welfare of the child.