[A suggest has been made that it may have been moved before that from a site near the intersection of Beaver Dam and South Country Rds., at a time when James H. Post was expanding the old Caleb Post family homestead (Br09B and Br09B.1-S). A house at this location is shown on old maps. However, now that images of the chauffeur's cottage at its original location have been found, including the incorporation of garage areas into the structure, this scenario seems less likely. It appears to have been built specifically as a chauffeur's cottage. ]

The Post chauffeur,John Larsen, was well liked by the family, serving as their chauffeur in Brooklyn as well as Brookhaven. In addition to managing the Post's motor vehicles and carriages, he also managed the Post's boats, horses, and other aspects of the Brookhaven property. --Dorothy Hubert Jones (Granddaughter of James H. Post).

In 1958-1959, Dr. R. C. Anderson, a scientist at the Brookhaven National Laboratory, purchased the house from Elisabeth Post Morrow, and moved it essentially one lot further west off the Post property to a lot that was originally a part of the Hubert estate [this needs to be confirmed. The Anderson lot may have been part of the Post estate.]. Dr. Anderson did some remodeling during his residency. The garage addition that had been added to the original cottage was separated from it and became a semi-attached library

In 2006, the property was sold to Carole and Matthew Kerins. Starting in 2007, the house was extensively remodeled by the Kerins – the original cottage was incorporated into a much larger structure, and is now at the west end,. However, the siting of the Anderson home and library structures remained the same. The remainder of the property was developed as a horse farm and a barn erected southwest of the house.