Abstract: A core for a building is adapted for use with a centralized, modular functional performance infrastructure system affording highly efficient use of floorplan. The core includes a structural frame forming a plurality of compartments containing the functional performance infrastructure system components that may be accessed readily for servicing, maintenance, and replacement. An integrated network interconnecting the compartments affords flexibility in the functional performance infrastructure system component locations in the core, while providing common locations for interfacing the components with distribution and collection systems servicing the building.