Load bearing and non-load bearing frames for walls, roofs and floors are prefabricated according to a predetermined building plan and made to disengage and collapse to a compact and intact frame, where, as with a wall frame, studs are resting against one another and the upper and lower tracks are in close approximation to each other, separated only by said resting studs. Said frames for walls, roofs and floors can be readily be transported to a construction site, where the collapsed frames are expanded, engaged, stabilized and permanently plumbed and braced.