Located opposite the tram station and on one of the busiest roads entering the city, this pioneering operation must play a part in the urban and infrastructure renewal of the future Charles de Gaulle square. The future housing programme must offer a representative sample which matches the expectations of residents. The triangular plot carefully occupied by the building is very narrow and very slender on the north end, where it meets the crossroads. An additional 3.50 metre wide space needed for a bus lane also reduces its footprint. The orientation is fixed as the rear of the plot, looking out onto a hotel and its car park as well as two private garden plots, must remain opaque. The construction is independent by distancing itself from the dividing limits, which gives it a lot of freedom. A full-height and solid firewall is erected to the rear of the plot. The generous and overlapping open-air passageways, which serve all houses, are arranged against the wall; they are separated from the inside façade of the apartments with a series of light shafts which provide excellent zenithal lighting on the first floor. The facade onto the road acts as a filter for improved insulation from visual and sound disturbances. It is offset further than expected in the first third to distance itself from the busy road of Avenue du Haut Lévêque. This physical separation allows the apartments to avoid the limitations of being west-facing and become dual-aspect.