Internal Memo Labels Rideau Cottage ‘Inadequate’ as Decision on 24 Sussex Nears

Security and Space Constraints Plaguing Current PM Residence

Rideau Cottage, the historic residence that has served as the home for Canadian prime ministers for over a decade, is increasingly being viewed as a security liability. An internal government memorandum, obtained via an access to information request, describes the red-brick house as “inadequate” for the needs of a head of government. The document, prepared for Clerk of the Privy Council Michael Sabia in August 2025, highlights that the building’s small footprint and proximity to the Governor General’s residence and public neighborhoods create significant operational challenges.

The Long Shadow of 24 Sussex Drive

While Rideau Cottage struggles to meet modern requirements, the official residence at 24 Sussex Drive remains a shell of its former self. Once the home of every prime minister from Louis St. Laurent to Stephen Harper, the 19th-century mansion was decommissioned after being found to be infested with mould, asbestos, and rodent excrement. Although hazardous materials and obsolete systems have been stripped out, the property remains uninhabitable. Successive administrations have hesitated to authorize the tens of millions of dollars required for a full restoration, fearing the political optics of spending taxpayer funds on a leader’s residence.

A Looming Deadline for the Carney Government

Under the current administration of Prime Minister Carney, there are signs that a final decision may be approaching. A source familiar with the matter indicates that the government could determine the fate of 24 Sussex in the coming months. This follows a directive from former Prime Minister Justin Trudeau, who set a January 1, 2026, deadline for an advisory panel to provide recommendations on the location, functionality, and security of a permanent official residence. While Prime Minister Carney has previously stated that the residence is not a top priority, the Privy Council Office has reportedly taken an active role in costing out potential options.

Security Recommendations and Heritage Concerns

The RCMP has already provided confidential advice on “target hardening” for various site options, including the implementation of counter-drone mechanisms and advanced surveillance. Meanwhile, heritage advocates like Heritage Ottawa are urging the government to act before the historic structure at 24 Sussex deteriorates beyond repair. Former Deputy Prime Minister Sheila Copps has suggested that the decision-making process must be insulated from partisan politics to ensure that the site—a symbol of Canadian history—is preserved for future generations.