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,
24 Sussex Drive several years of uncertainty, in 1950 the government decided to refurbish the property as a residence for the prime minister, the renovations costing just over $500,000. Louis St. Laurent was the first to take up residence in 1951. Since then, every prime minister—except for Kim Campbell (who resided at Harrington Lake) and, to date, Justin Trudeau (who has opted to reside at Rideau Cottage pending a review of work needed to repair the house)—has resided at 24 Sussex Drive for the duration of their mandates. Previous prime ministers lived at a variety of locations around Ottawa: Sir Wilfrid Laurier and