The 1007m² property, located in Athens’ northern suburb Ekali, is facing both Rodon Avenue and Ikarias Street, with a mean of 3.60m height difference between the two streets. Its elongated shape led to the composition of an oblong building with the residences appearing as a single structure. The optimal utilization of the site’s orientation (long sides facing southwest and northeast) and of the remaining free space, as well as the assurance of the residences’ full independence from each other were the top priorities for the project’s development. Prismatic-shaped, mono pitch roofs were considered functionally necessary for the particular climate conditions of northern Attica (heavy snowfalls during winter). The roofs contribute to the visual harmony of the composition by following the ground’s bent while at the same time corresponding with the shape of the Penteli Mountain, visible at the far back. The access routes for pedestrians and vehicles are set linearly along the northeastern side of the buildings and are independent for each residence. On the other hand, on the southwestern side the houses extend to the garden. The passage from the ground-floor to the garden is achieved through wide loggias, which constitute extensions of the living rooms, providing protection from the winter’s cold and direct sunlight during summer. Despite the axial symmetry of their ground plans, the two residences differ in character. The living rooms are located in the residences’ ground-floor. The first floors include the parents’, southwestern oriented dormitory and the children’s dormitories, with windows towards the street façades of each residence. The structure is made of reinforced concrete with brick infills. Concrete was also used for the surrounding outside facilities with its surface left exposed (retaining walls, entrances), while exposed aggregate concrete was used for the vehicle ramps and the pedestrian passages. The roof sides are covered with zinc sheets in grey and red colour, while the roof itself is covered with bituminous granule-coated shingles. The railings, as well as the pedestrian and vehicle gates, are made of stainless steel, the entrance parapet and the balcony floorings on the first floor are made of safety glass. Red limestone was used for the outer lining of the fireplaces and red marble for the entrance steps. The floors are covered with ceramic tiling and oak wood. The inner window frames and all wall boardings are also made of oak wood. Special attention was paid to the buildings’ thermodynamic characteristics. Apart from being equipped with floor heating and energy efficient fireplaces, a 15cm thick insulating layer has been applied to the roofs; the masonry and concrete frame are coated with a composite system of thermal insulation and the window frames are also insulated. In addition to that, the structure as a whole presents a more hermetic façade on the northeastern side.