This bachelor’s thesis focuses on the development of documentation a low-energy detached family house in Račerovice. The project as well as the addenda are elaborated with regard to contemporary legislation and standards. The family house is located on plot number 786/12 in cadastre unit Račerovice. The house has two floors. Dimensions of the house are 12,40 x 9,65 m, dimensions adjacent garage are 7,30 x 4,80 m. The roof of the building is designed pitched roof, over the garage is flat roof. The house is performed from the system Porotherm. The basic construction are of plain concrete and the base concrete slab. The enclosed essay deals with floor