Anthony Van Schaick had the house built with Holland-made brick as facings on the inside and outside of the walls. The space between the inner and outer walls was filled with brick made on the premises by his slaves. However, architectural historians now believe that the “belting” around the base of the house is the only bricking that came from Holland. Certainly the walls are unusually heavy.
The arrangement of the house is somewhat different from most other houses of this time, but is not unique. The Van Courtlandt Manor house at Croton-on-Hudson is built in this same style. The first floor acts as the basement with the main or ground floor a little above this ground level and with still another floor and an attic above this.
The kitchen was in the basement and had a huge hearth. The baking was done in a stone bake oven just to the side of the hearth that jutted out of the foundation.
The main floor is entered at the front through the original “Dutch” door, into a spacious hall which divides the house. On the North side is the Federal Room and Library, with the Georgian room on the South side.
One of the rooms on the second floor had a small door cut through the exterior wall, with an iron beam protruding outside. A hoist was fastened to the beam to haul up merchandise that would have been stored here. The door opening has now been filled with brick but its outline is readily seen.
Porches have been added at the front and rear of the house, but most of the original features and flooring have been retained and restored.
In 2010, the original iron staircase was replaced with a sturdy wide deck and low-rise stairs.
Unique historical features of the mansion interior and staircase are featured in the book American Furniture 2004.