The Biddle Hall renovations at Naval Square include exterior repairs to the roof, masonry, windows, and maintenance work to the common area verandas at the rear of the building. The project also includes interior basement and structural repairs, basement mechanical ventilation work, and rotunda plaster repair and painting. The National Historic Landmark building was built in 1833 and is a central element in the current Naval Square residential complex, a 20-acre gated community within the Graduate Hospital neighborhood of Philadelphia.
Designed by William Strickland, Biddle Hall was the central building of the former U.S. Naval Asylum complex and one of the most important surviving examples of early-nineteenth-century Greek Revival architecture in America. Biddle Hall was also home to the first formal U.S. Naval Academy from 1839 to 1845 and before a separate hospital building was erected on the site, the structure housed the U.S. Naval Hospital, one of the earliest regional naval hospitals in the country.