The development is based on Utzon's additive approach, starting modestly with one unit and proceeding from there, taking into account the lie of the land and the surroundings. Utzon described the arrangement of the houses as "flowers on the branch of a cherry tree, each turning towards the sun." Each unit has an area of 15 by 15 metres (49 ft × 49 ft), enclosed on two sides by the L-shaped house, and by walls on the other two sides. The small size of the units makes them not only economical but also easily adaptable to the natural terrain. The limited size of the private area is compensated by the provision of a large landscaped communal space. wikipedia