Abstract: The construction industry often faces substantial challenges during the design phase, characterized by poor communication, inadequate documentation, and inefficient information management. These issues create a need for more effective tools to manage the complexity of design processes in building projects. To address this gap, this study proposes the development of a Collaborative Design Management System (CDMS) aimed at improving communication, coordination, and overall performance in multidisciplinary design teams. The CDMS integrates methodologies such as Lean, Agile, and Building Information Modeling (BIM) to optimize workflows, facilitate information exchange, and track performance through established indicators. The research is structured using the Design Science Research Method (DSRM), encompassing problem identification, literature review, system design, and implementation in real-world building projects. Data were collected from industry workshops and case studies, ensuring a practical basis for system development. The expected results include enhanced coordination, more efficient information flow, and improved design quality, contributing to a more collaborative and efficient approach to design management. These findings offer a practical framework for future applications aimed at optimizing collaboration in design projects. Future research should focus on broader implementation, customization for different project scales, and ongoing refinement of system functionalities to meet the evolving demands of the construction industry.