Building Healthy Children is a collaboration of social service and health care agencies, each providing evidence-based services to intervention families in a seamless package. Low-income parents who gave birth to their first child when they were under 21 and who were not involved in the child welfare system were targeted as an at-risk group for whom home visitation services would offer optimal preventive and cost-efficiency outcomes. Services include Interpersonal Psychotherapy [IPT] for maternal depression and Child Parent Psychotherapy [CPP] for maternal-child relationship development and trauma treatment, and Parents As Teachers [PAT]. Families are provided a tiered complement of BHC services based upon risk and current need.