This study explored how participation constitutes and is constituted by practices of power in group homes for people with intellectual disability. The study used disciplinary power as theoretical perspective and was based on 50 h of observation in two group homes with a total of 15 residents. The analysis identifies practices of power and their relationship to individual agency and participation. The results show that institutional structures construct practices of power that define codes of conduct for the group home residents and their possibility for participation. This study offers implications for the daily lives of residents in group homes for people with intellectual disability.