Supportive Housing is an intervention that combines affordable housing with intensive wrap around services. The intervention has been successful with hard to serve populations, such as chronically homeless adults. Communities are testing the efficacy of supportive housing with high-need child welfare families to learn if providing supportive housing helps improve outcomes for children and families, spend taxpayer dollars more wisely, and lead to long-lasting systems change and service integration. The Partnership to Demonstrate the Effectiveness of Supportive Housing for Families in the Child Welfare System is a federal demonstration investigating these important questions. This brief describes the purpose and design of the demonstration and profiles the five program sites.