24 Sussex Drive has also been proposed. The designation as a federal heritage building, though not legally binding, would probably protect it against such a measure. 24 Sussex Drive 24 Sussex Drive, originally called "Gorffwysfa" and usually referred to simply as 24 Sussex, is the official residence of the Prime Minister of Canada, located in the New Edinburgh neighbourhood of Ottawa, Ontario. Built between 1866 and 1868 by Joseph Merrill Currier, it has been the official home of the Prime Minister of Canada since 1951. It is one of two official residences made available to the prime minister, the Harrington Lake estate in
Sussex Drive residential condo and retail complex. The most significant recent addition to Sussex Drive, having been opened on December 6, 2008, is the Delegation of the Ismaili Imamat, a representative building for His Highness the Aga Khan. Sussex was originally three different streets. The section in the Byward Market was originally named Metcalfe Street, and the portion east of the Rideau River was known as Ottawa Street. The centre portion, named for Prince Augustus Frederick, Duke of Sussex, was then known as Sussex Street. Sussex Street was renamed Sussex Drive in 1967. In the 1960s the National Capital Commission launched a