Therapeutic communities (TCs) are designed to enhance the residents’ experience of community within the residence. This chapter explores how the physical environment of the TC, its setting, facilities, and inner environment, can contribute to this perception and affiliation with community. Its separateness from the outside community in addition to its living spaces, furnishings, and décor are all utilized to promote affiliation, a sense of order, safety, and right living. TCs for the treatment of addiction are located in a variety of settings, which may be determined by funding sources and the external resistance to or acceptance of rehabilitation programs. Within the context of the TC perspective, privacy is considered an earned privilege based on the individual’s social and psychological growth. There are four physical features of the inner environment that instantly identify what is unique about a TC program: the front desk, the structure board, wall signs, and decorative artifacts.