This research set out to determine which social and physical factors are the strongest determinants of crime, fear, and instability in federally-assisted housing developments. The study examined all federally-assisted, moderate-income developments in Newark, St. Louis, and San Francisco, as well as public housing projects in San Francisco. The primary source of data for this study is a survey of households conducted in a single stage in late 1976 and early 1977 in which interviews were obtained from residents living in the study sites. Housing managers and city police were also interviewed. Archival data collected from housing management and police files were used to supplement the interviews with residents, management, and police.