The mentioned property is located in the village of Rosina. On the property, there is an existing family house with one above-ground and one underground floor, which does not meet current technical parameters and the investor's requirements. The design of significant reconstruction transforms the original building into a family house with three residential units. The building is divided into two volumes, separated by an atrium with a terrace and greenery. The first volume facing the street with two residential units has a pitched roof that reflects the surrounding buildings. Exterior stairs connect two above-ground floors and one underground floor. The third apartment unit is in the second one-story volume with a flat roof. All three nearly identical flat units include an entrance hall, an open living area with a kitchen, dining room, and living room. Additionally, there is a bedroom and two bathrooms according to the investor's preferences. Each living area has access to a terrace. The residential unit on the second above-ground floor has its terrace on the roof of the second volume, accessible via a bridge over the atrium with a terrace. The underground floor consists of technical facilities and a laundry room. The facade of the building is in a subtle white color combined with brick cladding. The proposed building is designed to achieve energy class A0.