Laurier lived there from 1897 until his death in 1919. His wife willed the house to Mackenzie King upon her death. King lived there 1923 until his death in 1950. King willed the house to the people of Canada upon his death. The government then briefly considered designating Laurier House as the permanent official residence of the Prime Minister. However, as the Prime Minister in office at the time, Louis St. Laurent opposed designating Laurier House as an official, probably because he personally preferred a different residence (specifically, 24 Sussex Drive - a property the government had acquired a few years earlier through an eviction) and/or because he and his fellow Liberals did not want future Conservative Prime Ministers residing at Laurier House. 24 Sussex Drive was designated the Prime Minister's official residence in 1951.
Laurier House is now owned by Parks Canada, which operates it as a public museum. A popular summer attraction since 2003 is the Summer Heritage Theatre Series on the veranda and Evening Butler tours. Laurier House is open to the public for guided tours from Victoria Day until Labour Day.