Photo: National Capital Commission 24 Sussex Drive | National Capital Commission
24 Sussex Drive is arguably the best-known address in Canada, the official residence of our Prime Minister. Built in 1867 and designated a “Classified Federal Heritage Building” in 1986, it has served as the official residence of the Prime Minister of Canada since 1951. From diplomatic receptions to televised addresses, its importance in national political life is above question.
Vacant since 2015, the building’s condition was declared to be “critical” by the National Capital Commission (NCC) in 2021. A $4.3 million abatement and decommissioning project was completed in 2024, which removed asbestos and other hazardous materials, upgraded insulation, and carefully dismantled and stored key heritage features such as original doors and mouldings. The areas of highest heritage value, including the dining room and library, were carefully protected during this work.
While there are several options for the site’s future, the federal government has yet to make a decision. As of mid-2025, the country’s official residence remains shuttered. Without an occupant or clear vocation, the building will continue to deteriorate and its future is in question. Government indecision threatens this important historic place.
The slow decline of 24 Sussex is more than a maintenance backlog. Federal legislation to protect heritage places died on the order paper in the last parliament. In this moment when symbols of Canadian identity and projects of national significance are more important than ever, federal leadership for heritage places is needed now.
Location: Ottawa, ON
Endangered Places List: 2025
Status: Immediate Threat
