Renovation and extension of a family house in Prague

The plot is located on a southern slope in a row of repeating duplex houses built during the same time period. The task was to remodel and extend half of the family duplex into two residential units with a shared garage and a recreational area with a pool and sauna, designed in such a way that allows both apartments to be combined into one large unit. Given the surrounding urbanism and the fact that it is a duplex, it was decided to preserve the existing volume and character of the house. The sloping plot was utilized for the needs of the new program, and through the use of a sunken atrium, the area was expanded below the level of the existing garden.
In the three-story house with an attic, one apartment is smaller, a duplex with an adjacent atrium, and the other apartment is larger, utilizing the garden around the house. The entrance to the house is from street level via a covered access hallway along the garage, recreational area, and atrium, which provides light to the hallway. The garage and recreational area are set into the terrain and covered with a green roof at the level of the surrounding gardens. The main staircase has been moved to the exterior of the back part of the existing building.
Structurally, the original building is preserved as a simple masonry longitudinal dual unit with a load-bearing outer wall and a central wall that support the wooden structure of the gable roof. The new recreation area and garage, including the retaining walls of the atrium and access hallway, are made of reinforced concrete.
The interior of the house features light shades with windows and doors in white, oak planks, and light terrazzo floors. The pool is a combination of colors and materials. The facades are made of scraped plaster. The surface of the access hallway and terraces is made of tropical wood. The metal sliding gate with an entrance door is spray-painted in a copper shade, which is also used for the cladding.
The walls of the atrium will grow with ivy over time, and in the center, a serviceberry will thrive. The railing in the garden blends with the bushes, and the steep slopes will be covered with layers of flowering moss, perennials, and ferns.