The final thesis designs an apartment building with terraces, bikeshop and underground garage. The building is situated in the city of Hradec Králové. Building has four floors and one underground floor. The main root area is designed as extensive green roof. The supporting system consists of a cast-in-place reinforced concrete frame with masonry of brick blocks. The whole building will be insulated by external thermal insulation composite system of mineral fibers. The building design meets the requirements for almost zero energy consumption houses.