This document presents a case study on the use of building information modeling (BIM) on the UCSF Medical Center project in San Francisco, California. It discusses how BIM was used throughout planning, design, and construction, resulting in cost savings of over $100 million. Key aspects of the BIM implementation included co-locating over 100 project stakeholders in an integrated workspace, establishing cluster teams to enhance collaboration, and using BIM for coordination, quantity take-offs, scheduling, and facility management. The extensive use of BIM on this large, complex project helped reduce costs, improve schedule reliability, and increase productivity during construction.