Effective coastal cadastre management requires an advanced framework capable of addressing spatial and temporal complexities arising from the evolving nature of coastal environments. This paper presents an LADM-based 3D Temporal approach for coastal cadastre to enhance the management of coastal property rights, jurisdictional boundaries, and land-sea interactions. The proposed framework integrates three-dimensional spatial data with temporal attributes, enabling precise representation and tracking of changes in coastal parcels, maritime zones, and shoreline boundaries. The LADM-based model is structured within a spatial database for practical implementation, ensuring seamless interoperability with GIS-based visualization and web-based monitoring tools. This approach strengthens cadastral decision-making by addressing key challenges such as shifting shorelines, overlapping land-sea rights, and the evolving legal status of marine parcels. From a legal and policy standpoint, this framework supports harmonizing land and marine tenure systems, promoting regulatory compliance, dispute resolution, and jurisdictional coordination among stakeholders. Implementation of an LADM-based 3D Temporal cadastre within a structured database framework enhances transparency, facilitates adaptive marine governance, and ensures legal clarity in coastal property administration. The findings underscore the critical need for a legally robust cadastral model to support sustainable coastal management and equitable access to marine resources.