Abstract: A building information management system integrates data from project management, facilities management and building design tools from a variety of sources, and stores this information for access in a central repository. Owners, builders, facilities managers, architects, engineers and contractors and other constituents can access, store, update and view the integrated data according to the tasks for which they are responsible. Files representing three-dimensional models are stored in the building information management system by parsing them into part files, and by creating mappings among the part files and metadata, and by storing the part files and mappings in a database. The part files and metadata are sufficiently smaller than the larger file representing the three-dimensional model and provide significantly improved viewing performance over a computer network.