(b) A child with special health care needs may remain in a specialized foster care home, as defined in subdivision (i) of Section 17710, after 18 years of age if all of the following requirements are met:
(1) The child was a resident in the home prior to 18 years of age.
(2) A determination regarding whether the child may remain as a resident after 18 years of age is made through the agreement of all parties involved, including the resident, the foster parent, the social worker, the resident’s regional center case manager, and the resident’s parent, legal guardian, or conservator, as appropriate. This determination shall include a needs and service plan that contains an assessment of the child’s needs and of continued compatibility with the other children in placement. The needs and service plan shall be completed within the six months prior to the child’s 18th birthday and shall be updated with any significant change and whenever there is a change in household composition. The assessment shall be documented and maintained in the child’s file, and shall be made available for inspection by the licensing staff or the county child welfare agency.
(3) The regional center monitors and supervises its placements, as part of its regular and ongoing services to clients, to ensure the continued health and safety, appropriate placement, and compatibility of the developmentally disabled adult with special health care needs.