AN ELEGANT CORNER BUILDING evokes memories of art deco. Along a busy road leading into the heart of Brussels, five passive residences for the social housing of large families have been fitted into a small plot. The duplex apartments are ingeniously arranged around the main stairwell, so that the available surface is used as optimally as possible. The building has both common and private indoor and outdoor spaces. The abundance of light and the surprising perspectives contribute to quality cohabitation.