It is about a detached house with semi-basement, ground floor, first floor and attic. The plot is angular with north orientation. In order to seize the southern sun we created an inner atrium which warms and illuminates the cold winter days the entire house , in which have visual contact all living rooms. The space flows from the entrance to the living room and kitchen and through an internal staircase to the bedrooms on the first floor. Even in the basement the natural light enters naturally and creates a comfortable living space.