We built two residential units (villas) with levels K + P + 3; the two are interconnected with underground parking space. Residential villa with layout of 21.50 x 16.90 m. Each tower has ten units, three on each floor. On the top floor there is only one unit that stretches over the entire tower. Beside the inner residential area there is also an outside terrace for every unit. Each unit is made of high-quality materials with long life span, which means high quality of living. Built heat-pumps of the water supply system and the energy of groundwater, which will be used for heating of premises and for sanitary water heating. Heat insulation ensures low heat conductivity - rooms will stay warm in the winter and cool in the summer. An energy performance certificate has been given for the building that describes the planned energy performance of the building after the realization is finished. With the calculated value of 12.434 kWh/m2 the object falls in the top energy class A1/A2.