Naval Square Residences

Location: Philadelphia, PA
Renovation Architect: JKR Partners

O'Donnell & Naccarato provided structural engineering services for renovations to Naval Square’s existing historic structures, Biddle Hall, the 4-story main structure, and the two adjacent 2-story structures, the Governor’s Residence and Surgeon General’s Residence to create a 78-unit condominium complex. Designed by architect William Strickland in the 1830s, the Naval Square Residences and are considered to be among the finest examples of Greek Revival architecture in the United States. In it's heyday, Naval Square's 30 acre lot housed several U.S. Naval facilities including the Philadelphia Naval Asylum, the first home of the U.S. Naval Academy and nation's first retirement home for sailors and marines.

The renovation project included comprehensive restoration to preserve and repair the existing façades and rear verandas of Biddle Hall, which were damaged by fire in 2003. A new roof with skylights was designed for Biddle Hall, as well as interior upgrades including restoring the cascading stair in the main lobby.

During renovation, the Governor's residence was completely gutted, and significant portions of the Surgeon General's residence were demolished. O'Donnell & Naccarato designed new floor and roof framing as well as bracing for the structures during demolition.