Abstract: A collapsible fire escape for erection within a building adjacent a window therein, comprising sets of upper and lower joists arranged spatially apart from one another and mounted pivotally, respectively to upper and lower end portions of elongated upright angle irons to form a rectangular framework, a floor mounted over the lower joists, a first set of wall covers mounted to and between the outer surfaces of the upright angle irons, a second set of wall covers removably insertable between the remaining open spaces of the upright angle irons, foldable brace sections mounted crosswise and pivotally to the connecting points of joists and upright angle irons, a continuous hinge mounted along one of the upright angle irons extending into a plate which terminates in hooks, a plate provided with tubular projections mounted to the outside wall of the building adjacent the window for receiving the hooks and the housing capable of being swung outside through the window.