an extensible surface area structure for expanding the area of a primary surface , comprising , a frame , a primary surface area supported by the frame and having an outer edge , an extensible surface area having an outer an inner edge and adapted for temporary storage in a superimposed position on top of the primary surface area , at least one extensible support beam secured to the frame at its first end , a leveling assembly secured to the extensible support beam at its second end and attached to the outer edge of the extensible surface area .