A permanent roofed construction, currently or formerly intended for shelter. A permanent roofed construction, currently or formerly intended for shelter. A building under construction is included as a building, if it is apparent that, on completion, it will meet the def for what a building is. A structure that is identifiable as having once been a building but which no longer has a roof is included as a building. This is a Prime 2 Superimposed object. SuperImposed objects are objects that are superimposed on a carpet of Skin-of-the-Earth polygons