The foundation of the original house was found using ground penetrating radar to the west of the existing structure.
Dendrochronology also revealed that the large granite section of the house to the west was added in 1841.
Caleb gave the land to his daughter, Mary, when she married Michael Pue, an Irish doctor.
In 1769, the "Bethesda Old Place Farm" home was expanded on the property and run as a tobacco-producing plantation with 26 slave workers.
In 1954, the Columbia Hills Corporation developed the land leaving just 8.3 acres surrounding the house.