The trend toward shifting responsibility for social welfare to the neighborhood level warrants a close look at the work of settlement houses, which have been providing services in conjunction with their communities for more than one hundred years. The author uses interviews with settlement house staff and participants, as well as local community leaders and observers, to examine what community embeddedness means to three New York settlements and how that embeddedness enhances the settlements' overall impact in the community. The author also examines the forces and attitudes that can prevent settlement houses from reaching their potential as agents of and centers for community building. The fourth in the series, Putting Ideas to Work, takes an organizational perspective, looking at community-building activities across the United Neighborhood Houses of New York (UNH). The authors explore the complexity of implementing community-building ideas and consider various ways settlements are putting community-building approaches to work-within individual settlements and their neighborhoods, among groups of collaborating settlements, and system-wide. The report includes profiles of selected settlement and UNH community-building efforts conducted at different organizational levels throughout the UNH system.