One-story house/cottage - basement foundation height starts from 40cm, ceiling height 2,5-3m, main roof slope  is 10-30degrees, usually there is space left for attic, where equipment can be stored. The overlap is usually constructed with beams or rafters, ceiling/roof insulation is 200/250mm. Convenient and practical building due to the lack of stairs. The architecture is often simple and practical. The price is slightly higher in comparison with a mansard house or two-story one, within 10%..