• Raumplan was at that time quite revolutionary concept and overturned the previous thinking about architecture. The house was no longer only a atter of individual floors of the same height, layered to each other, but became complicated spatial structure of contiguous space. Each room had not only her area but also appropriate height of hers role. The principles that Adolf Loos defined, are still used in many family houses. In apartment buildings, unfortunately, similar thinking applies extremely rarely despite its many advantages.