"Dragons we can deal with, Harry, but we’ll get to that in a minute - I haven’t got long here. . . I’ve broken into a wizarding house to use the fire, but they could be back at any time. There are things I need to warn you about."
-- Sirius Black (GF19)
In order to talk with Harry about what was happening with the Triwizard Tournament, Sirius Black broke into a wizarding house to use their fire.