The Sanborn House, designed in the beaux-arts style by architects Clinton M. Hill and Thomas M. James, was erected in 1906–07 at a cost of $250,000.

[2] Their new home, which they called Aigremont, with its understated exterior and ornamented interior, set the stage for their role as prominent Winchester citizens.

The nuns built a grade school, the Marycliff Academy, on what had been the western paddock and used the house as their residence.

The Society now has a Site Manager, in place of an executive director, who handles the operations/maintenance of the house along with overseeing event rentals.

In 2011, the restoration project of the exterior facade, funded in part by a matching grant from the Massachusetts Historical Commission was started and completed.