The purpose of the study was to determine the satisfaction of women patients with the interior environment of live in-patient drug and alcohol rehabilitation treatment facilities located in the Midwest. USA. An increasing number of substance-dependent women are being seen in residential treatment programs. Whether privately funded or supported by tax dollars, a substantial amount of money is spent on the structure, furnishings, and maintenance of the physical environment of residential facilities. There is a need to better understand the relationship between patient satisfaction with the interior environment of treatment facilities and patient well_being. An important by-product of the current study was the development of procedures that can be used to identify problem areas in treatment facilities. This documentation can facilitate the quest for funds to make needed improvements. The study's objectives were to (1) assess female patients' satisfaction with the interior environment during their course of treatment and (2) compare satisfaction across facilities. The sample for this study consisted of 52 female patients receiving treatment in the live designated treatment facilities. Photographs were taken to record the wall color, upholstery and window treatments, the style-type of furniture, and the general layout and aesthetic atmosphere of the interior environment. Subjects completed a self_report survey of their perceptions of the facility interiors. The type of space, furniture, and finishes found in the live facilities did relate to patient satisfaction with the facility. Patients cited number of occupants in rooms, wall color, furniture comfort, and the need for privacy and time for quiet reflection as primary concerns. Satisfaction with the quality of the child care areas was indicated as a very positive feature of the facility. However, noise problems in the shared areas (living rooms, dining rooms) was a concern particularly for patients without children. The study's findings show that the environmental survey can be readily used by health-care personnel to assess how well a treatment facility's environment is meeting the needs of its patients and to identify problem areas.