It will cost much cheaper.

The second floor of combined houses consists of wooden bars. They can be natural humidity, profiled or glued timber, galvanized logs. The tree, compared with concrete and brick, is a fairly light material. Therefore, the load on the foundation will not be serious, as in the construction of houses that consist of stone. And this means that the foundation can be made less solid. It will cost much cheaper. In addition, the tree has many other advantages and advantages: strength, durability, good breathability, low thermal conductivity. The combined house requires lower heating costs in the winter, and in the summer — for air conditioning. Wooden walls contribute to comfort and comfort, regardless of the time of year. Therefore, residential premises are designed on the upper floors, including cabinets, canteens, bedrooms, etc.