In traditional claim management system, Extension of Time (EOT) claims often lead to disputes among key construction stakeholders. This necessitates shifting traditional system to a digital environment for efficient processing. This research, therefore, focuses on utilizing Building Information Modeling (BIM) technology for developing a BIM-Based Claims Management System (BIM-CMS) to manage EOT claims. Twenty-nine problematic issues in prevalent EOT claim management process are extracted through an extensive literature review and semi-structured interviews of industry experts. Using Application Programming Interface, a plugin is developed in Autodesk Revit for managing EOT claims. The developed plugin is evaluated by industry's experts, who opined that BIM-CMS can be used to a great extent, as a tool to resolve most of the identified issues. It is also expected to proficiently mitigate potential disputes among contracting parties. The study also highlights barriers to BIM-CMS implementation and proposes corrective measures.