Since 1800, the White House has been the official residence of the president of the United States. Its address is 1600 Pennsylvania Ave., Washington, DC. James Hoban, an Irish-American architect, was the winner of a 1792 competition for design of the structure. Benjamin Latrobe, principal architect of the Capitol building, sought to improve on the Hoban design as early as 1807. He prepared designs for pavilions at either end, interior alterations, and for porticos on both fronts. Hoban reconstructed the building after it was burned by the British in 1814. He also added the semi-circular South Portico in 1826, which Latrobe had proposed, and three years later completed Latrobe's rectangular North Portico. Extensively remodeled in 1902, additions made at the time were the East Gallery and the Executive Office Wing. Between 1948 and 1952, after the building was pronounced structurally unsound, it was gutted, and its interior structure replaced with steel framing.