This paper aims to find out that forest management under state control often deals with non-excludability and subtractablity issues that require effective institutions to preserve them. Data were collected through in-depth interviews with key informants and structured interviews with 26 respondents who were chosen deliberately (purposive sampling). The most effective lesson learned from the institutional model of community-based mangrove forest management is the co-management model as found in the institutional management of mangrove forests in Pusung Kapal Village (DPK), which is based on an assessment of institutional effectiveness using 8 Ostrom principles. However, the 8 Ostrom principles are not enough to reveal the institutional effectiveness in the study location, because there are other important factors that cause the effectiveness to occur, namely the historical factor and the threat of environmental disasters faced by the DPK community. An increase in the participation of DPK and Foest Management Unit (KPH) communities in the form of collaborative mangrove management in an effort to resolve conflicts and build cooperation based on the implementation of co-management, can provide greater opportunities in recognition of community rights to their forests.