Switzer (Mary E.) Building - Modernization
Location: 330 C Street, SW Washington, DC
Owner:U.S. General Services Administration
Contract Amount:$74.6 million (phase one) | $63 million (phase two)
Date of Completion:02/13/2008 (phase one) | 10/31/2014 (phase two)
This modernization was a complex, phased and occupied historic renovation of a 1930’s National Register of Historic Places federal office building (592,000 square feet). All primary systems were modernized. Non-historic interior construction as well as items that had reached obsolescence were demolished and replaced with new. Finishes were replaced except at designated preservation zones. Restoration was performed to preserve the exterior stone and brick façade and interior. Grunley replaced the existing curtain wall with new thermally improved curtain wall systems. The existing penthouse was replaced with a much larger one. The Switzer Building was initially designed to achieve LEED© NC v.2.1 Silver Certification but is seeking Gold. The project received a 2012 Washington Contractor Award for Historic Renovation/Restoration from the Associated General Contractors of Metropolitan Washington and a 2013 Award of Merit for Best Renovation - Historic Restoration from the NAIOP Commercial Real Estate Development Association.