Abstract: A prefabricated panel is disclosed which has high structural strength and simplifies the fabrication of buildings on site. The panels cooperate with structural grid type members to provide infill for the grid while, more importantly, significantly contributing to the overall structural stability of the building. The structural grid type members, in a preferred embodiment, are of a cement material and can be poured in place in cavities preformed in the panels. The panels can be prefabricated and, in a preferred embodiment, for interior and exterior finish materials are part of the panels.