The base of the original building is composed of the lowest three stories. The section of the base along Wall Street is eight bays wide, with a double-width entrance in the middle of the Wall Street facade, which is reached by a short flight of stairs and leads to the main lobby. The sections of the base on Broadway and New Street are seventeen bays wide. There is an exposed granite basement on New Street with a service entrance. On the upper floors, each of the bays has a single sash window on each floor. The northwestern and northeastern corners of the building both contain chamfers.