Sapta Darma, as one of the belief systems (aliran kepercayaan) developing in Jemur Wonosari, Surabaya, exists as a minority group amid the dominance of officially recognized religions, thereby facing challenges in maintaining its existence while building harmonious relations with its surrounding environment. Based on this issue, the study formulates three research questions: (1) What forms of inclusivity are implemented by the Sapta Darma community in Jemur Wonosari, Surabaya; (2) How does inclusivity serve as a strategy to maintain the existence of Sapta Darma as a local belief system; (3) What factors support and hinder the implementation of inclusivity in maintaining the existence of Sapta Darma as a local belief system. The study employs a descriptive-analytical qualitative method grounded in Peter L. Berger and Thomas Luckmann's social construction theory, involving observation of six informants. The results show that inclusivity is manifested through theological, social, and cultural dimensions, and functions as a strategy through active participation in community activities, open communication without coercion, and sensitivity in designing activities to build social acceptance at the micro, meso, and macro levels. Legal protection, an open (non-exclusive) system of teachings, and good relations with community leaders serve as supporting factors, while inconsistencies in policy implementation and negative stigma remain inhibiting factors. These findings indicate that inclusivity functions as a strategy for preserving Sapta Darma's existence while also fostering good social relations