The literature on the construction of places of worship has predominantly shown difficulties, rejection and disharmony among religious communities. This study aims to describe and analyzed the success story of the construction of the Santa Monica church in Tangerang. This is a qualitative study conducted over a month-long period using primary and secondary data. Primary data were obtained through observation and interviews, while secondary data were obtained through formal and informal policy reviews available online. The informants involved in this study (...) amounted to eight people consisting of church leaders and administrators, local leaders, religious leaders, religious organizations and the Ministry of Religious Affairs. Data were analyzed using content analysis methods. The results of the study show that the ability of church leaders and administrators to build good social and cultural relations with the community was a key element in their success in obtaining permission to build the church. This was achieved through effective communication, dialogue and cooperation between the Catholic community, leaders and the predominantly Islamic local community. Active involvement in daily activities had a positive impact, fostering mutual trust and peaceful coexistence, ultimately resulting in the local community’s support and approval for the establishment of the place of worship. Thus, the church construction committee was able to meet all administrative requirements as stipulated by government regulations. This study recommends the importance of good social and cultural relations as the fundamental basis and determinant of success for religious communities seeking to construct places of worship.Contribution: This article contributes to the goal of HTS Theological Studies in promoting the transdisciplinary aspect of religious studies in the international theological arena, particularly in the study of religious harmony among communities in Indonesia. (shrink)