Justin Trudeau three half-siblings, Kyle and Alicia, from his mother's remarriage to Fried Kemper, and Sarah, from his father's relationship with Deborah Coyne. Trudeau lived at 24 Sussex Drive, Ottawa, the official residence of Canada's prime minister, from his birth until his father's government was defeated in the federal election on May 22, 1979. The Trudeaus were expected to move into the residence of the Leader of the Official Opposition, Stornoway, at 541 Acacia Avenue in Rockcliffe Park, but because of flooding in the basement, prime minister Joe Clark offered them Harrington Lake, the prime minister's official country retreat in Gatineau Park,
Gatineau Park as the only federal park that is not part of the national parks system, the existence and construction of private residences inside it, residents' extensive violation of shoreline protection bylaws at Meech Lake, and changes to its boundaries without the knowledge of parliament. For instance, inspection reports carried out by the Municipality of Chelsea in 2013 and 2015 confirm that 119 structures have been built without permit at Meech Lake, and that 80% of Meech Lake residents whose properties were inspected continue to violate county bylaw MRC 137-09 several years after it was adopted. Although advocated by Dominion Parks Commissioner