[1] A decade later it was included as a contributing property to the Arbor Hill Historic District–Ten Broeck Triangle when that neighborhood was listed on the Register.

At the time the land was in the town of Watervliet north of the city of Albany.

Abraham Ten Broeck enjoyed Prospect for only 12 years before his death in 1810.

[2] In 1848 Thomas Worth Olcott purchased the residence and renamed it Arbor Hill (Arbour Hill),[3] along with adding a first-floor butler's pantry and the second-floor bathrooms,[2] both of which reflect the Victorian style of the late 19th Century.

[3] The house has been owned by the Albany County Historical Association since it was purchased from the Olcott family in 1948.