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Denver Federal Center

Building 48 Modernization


In collaboration with CannonDesign, Centerre is currently undergoing the design-build renovation of a 154,000 sf warehouse building into offices for the Interior Business Center of The U.S. Department of Interior. The “Net Zero” modernization project will support the roughly 800 incoming Federal employees to be relocated from approximately 195,000 gsf of leased office space in Colorado. Building 48 was previously occupied by the National Archives and Records Administration (NARA) for use primarily as a warehouse with a small office component. The scope of the modernization project will consist of the installation or replacement of all major systems, such as mechanical, electrical, plumbing, and communications, as well as structural enhancements and roofing replacement. The project will maximize opportunities for natural daylight into the resulting space, utilizing existing and introducing new building penetrations. The office tenant finish will support an open office layout, incorporating elements of the existing warehouse into the architectural design. The structural slab portion of Building 48 will be removed to create a collaboration zone in the basement for tenants to work in a vibrant and collaborative environment. The main entry of the building will be relocated and modernized. Exterior modifications include roof mounted solar PV, a sunken outdoor patio garden, rain gardens and a new parking lot to accommodate the 800 incoming employees.



General Services Administration


154,000 sf


Corporate Office
Public Space
Office Modernization
Solar PV
Façade Upgrade


Lakewood, CO


$50 million