In 2002, Knightsbridge acquired 67 Franklin Street (aka 361 Broadway) in Tribeca. Originally designed by W. Wheeler Smith, and built in 1882 during the late 19th century industrial boom, the building remains one of the largest and most ornate cast iron structures in New York, and received landmark designation in 1983 from the New York City Landmarks Preservation Commission.
In 2009, Knightsbridge engaged Jan Hird Pokorny Associates, award-winning preservation architects, to oversee the restoration of the building’s intricate cast iron façade. In 2013, with the extensive façade restoration complete, Knightsbridge embarked on a development plan with visionary architect Shigeru Ban, who was awarded the Pritzker Prize in 2014. Ban’s vision was to create cathedral-like spaces by introducing volume in the form of double-height living spaces into lofts housed in the historic cast iron base, and extruding interior floor area to construct two telescoping glass-walled penthouses above the landmarked building. The result is 13 one-of-a-kind signature Shigeru Ban residences, each with private elevator entry. The condominium was named Cast Iron House by Ban, whose custom is to name each of his projects. Cast Iron House will also provide a full floor of amenity space, making it one of the most highly serviced and amenitized condominiums at this very intimate scale. The overall result is a harmonious fusion of distinctive elements, while each residence stands alone as a singular creation by Ban.