A concrete building process involving skyscraper construction techniques bears promise of making a nationwide impact on the residential housing industry. The concrete-steel process is effecting so many economies that the developers are offering home buyers in Largo, Florida, extras impossible to match at the price of comparable housing. A Uni-Con house starts with a site-cast concrete floor slab. The reinforcing steel in the slab is stubbed about 12 inches above floor level. To these stubbed are welded five-eights of an inch steel rods into framework that embraces interior and exterior walls and the roof. To this skeletal framework is welded a grinding maze of three-eights of an inch steel rods, in squares about 12 to 14 inches on a side. Against these are positioned slabs of polystyrene insulation. The house is then sprayed a 1 inch coat of concrete. The walls are subsequently built up to a thickness of 5 inches by a succession of three more 1 inch applications of concrete and a plaster textured finish applied on interior surfaces. Because they are made of concrete, the houses are said to be fireproof, windproof and termite proof. Also the steel work can be erected quickly and cheaply partly because it does away with high priced labor for carpenters and masons.