Site plans and surveys for the property dating from 1921 to the 1930s all refer to its location being in Eversley,[3] a community which no longer exists.

[1] A history of the estate, Eaton Hall: Pride of King Township, was written by local author and historian Kelly Mathews, published by The History Press, an imprint of Dundurn Press in June 2015.

[6] During World War II, the property was used as a convalescent hospital and rehabilitation centre for the Royal Canadian Navy.

It established its King Campus operations on that land in 1971, using Eaton Hall as its administrative facility.

[1] In 2021, Seneca College and the municipal government of King signed an agreement in which the college granted a ground lease to the municipality for a nominal rate of $1 per year for 99 years in exchange for tax exemption and the use of the building for events and programs by the township's residents, community groups, and not-for-profit organizations.