[3] In 1841, Martin built a Greek Revival mansion next door to the Anderson House and named the resulting estate Deer Park Farm.

At some point during this time a two-bay brick addition was constructed on the east side of the house, extending it to the present five-bay block.

The owner of the house during this period was William F. Wilson, who added a neoclassical portico, dormers, and a rear wing to the building.

The three westernmost bays make up the original portion of the building, with irregularly coursed fieldstone walls which are 18 inches (46 cm) thick.

The two-bay extension on the east side was added at a later date and features exterior walls of stuccoed brick rather than stone.