Primarily non-metal prefabricated residential housing and commercial building components sold together as a unit, namely, prefabricated and modular home and building linkage, circulation, and integration components in the nature of building foundations, stair towers, manufactured room and structural amenity modules, and plumbing, electrical, heating, and cooling linkage modules and linkage components, all manufactured of primarily non-metal materials and sold with the prefabricated housing as a unit; prefabricated non-metal panelized housing and building modules, namely, building foundations, stair towers, manufactured room and structural amenity modules, and panelized modular housing components comprised of building sections that can be incorporated into floor plans and building configurations of modular housing