Local communities worldwide rely on cultural values, and Indigenous institutions to recover from social conflict; however, the process by which social awareness is constructed as a peacebuilding mechanism remains insufficiently theorised, particularly in post-colonial island societies. This study examines how social awareness is constructed and mobilised in resolving recurring social conflicts in the Kei Islands, Maluku, Indonesia. Employing a qualitative phenomenological approach, data were collected through in-depth interviews and observations involving community leaders, customary elders, religious figures, and local residents. The findings reveal six interrelated forms of social awareness – sense of brotherhood, participation in joint activities, social interaction, problem-solving through deliberation, the ability to listen and communicate, and tolerance – which collectively shape everyday peace practices in the community. Drawing on Berger and Luckmann’s theory of social construction, this study demonstrates that while processes of internalisation and externalisation are increasingly challenged by modernisation and social pressures, objectification through strong customary institutions functions as the primary stabilising anchor in conflict resolution. The study extends social construction theory by proposing a communal–institutional variation, in which collective institutions play a corrective role in sustaining social cohesion. These findings underscore the importance of strengthening Indigenous institutions and culturally embedded practices in locally grounded peacebuilding initiatives.