~~Inverarden House was built in 1816 as a retirement home for John McDonald of Garth who had been a trading partner of the North West Company in Montreal. It was set in the midst of a 150 acre estate, parts of which were leased to tenants for farming. McDonald left the house in 1823 when he married his second wife and moved to a new house nearby. He sold
Inverarden to his daughter, Eliza, and her husband, John Duncan Campbell.
Inverarden was occupied by Eliza and John Campbell and their descendants for nearly 150 years. While parts of the property were sold off over the course of time, it was only in 1965 that the family sold the house to a chemical company that had purchased other property nearby. Chemcell Ltd. donated the house and 1ha. of land surrounding it, to Parks Canada in 1970.
The Historic Sites and Monuments Board of Canada had designated Inveraden House as a national historic site in 1968 because it is a significant early example of Regency architecture and is associated with the settlement in Eastern Ontario of partners of the North West Company. When Parks Canada acquired the house in 1970, an extensive restoration project was carried out to take it back to its appearance in the 1820s. After the restoration, it served for many years as an historic house museum operated by the Stormont, Dundas and Glengarry Historical Society. As a result of the relocation of the museum in 2000, it is no longer open to the public.