This, the fourth evaluation report for this project, describes extensive developments in Los Angeles during 2007-2008 and how they build on earlier work. The pipeline for permanent supportive housing is expanding, as are activities to improve the health of homeless people, smooth the transition from jail to community, and address the needs of the most vulnerable homeless people. Numerous coordinating and collaborating structures have begun or are expanding as part of these developments. Cautious optimism is in order compared to four years ago, but there is still a long way to go.