The exterior restoration and repair program on the former Whitehall Building was one of the most extensive masonry envelope renovations executed in New York City at the time. The 32-story structure is among the oldest structural steel framed buildings of its size. Because of the harsh environment at its waterfront location at the southern tip of Manhattan the building suffered severe structural steel decay. Large areas of the primary structural skeleton required replacement and monumental stone and terracotta ornamentation required removal and replacement. This $10m restoration was phased over four years. All of this work was done while the building was occupied.