This study, applied to the Nero Bath in the Patara Ancient City, combines Heritage Building Information Modeling (HBIM) with 4D (time) and 5D (cost) modeling to digitally simulate, optimize, and coordinate archeological conservation efforts. This approach facilitates efficient, data-driven decision-making and a seamless transition from virtual planning to physical restoration. A point cloud model was created using data from Light Detection and Ranging (LIDAR) scans and drone imagery of the Nero Bath. A 3D mesh model was created using geometric modeling software, with the proposed reconstruction interventions for the walls, roof, and partial ground initially modeled as NURBS surfaces. Then, architectural and archeological data, such as structural damages, required completion elements, and support systems, were incorporated into the model using BIM authoring software. To plan the post-excavation reconstruction process in a virtual environment, the excavation period, intervention decisions and cost calculations were transferred to a BIM coordination program. The resulting database demonstrated how the process could be tracked across the 4D (time) and 5D (cost) dimensions by defining tasks, timeframes, and cost allocations for the bath’s reconstruction. This approach provides a preview of potential conservation actions, helping to prepare the digital heritage for its eventual physical implementation.