Located on the edge of the Zac of Massy-Palaiseau Square, facing an immediate unstructured environment, this tertiary building has a signal role as a neighbourhood entrance.

Its visible side, the first stage built, will become the figurehead of a second larger tranche (lotC) that will transform the block into one of the most important in the district.

The architecture of the building is focused on its scalability. This is reflected in a reproducible "building on courtyard" typology and the implementation of fundamental flexible principles (choice of tray thicknesses and reversible technical concepts).

In the centre of the plot, protected from outside view, the building revolves around a wooded patio. At its top, multiple terraces are available as outdoor areas for meeting, working or resting.

A "communicating" architecture, also present on the street, through these "perched" winter gardens that contrast with the rigorous rhythm of the breakthroughs.

Due to their high thickness, the trays are designed to accommodate the most varied working methods. From open space to traditional partitioning, everything is possible.

The construction is based on passive principles of "low consumption" and HEQ. The envelope is made up of a joined skin with high thermal performance. Winter gardens can be transformed into summer balconies allowing better thermal regulation according to the seasons.