Abstract: A system of pre-formed panels, trusses, and roof elements, configured so as to affix to and integrate with one another to form a building structure. The truss elements are independently supported by columns. The several wall panel frames are attached to said support columns, to each other, and to the foundation of the structure. The roof panel frames are attached to the walls, to the trusses, and to each other. The entirety forms an integrated structure of substantial strength.Each wall panel frame is pre-formed so as to, after erection of the structure frame, receive exterior sheeting, in half-standard sheet sizes, within its outer frame, said sheeting being rigidly affixed to said panel frame. Similarly, interior sheeting is affixed to the inner side of the said panel frame, and insulation may be introduced between the two sheets. Exterior sheeting is similarly affixed to the roof panel frames, which is subsequently overlaid with standard roofing materials.