The block is within Nanterre’s municipal 9th Terrace, measuring around 113 meters by 21m wide. With the intention of avoiding an effect of mass, the building specifications describe procedures for the cutting and sequencing of volumes. To these various rules of building positioning, we propose a simple response: an organization of three principal volumes stemming from a large common base structure (ground floor + 3). Their dimensions in design allow the development of the maximum quantity of residential housing and activity space, equipped with double orientation. One of the principal challenges of the project is the creation of a new identity for the neighborhood. This involves a coherent architectural expression distinguishing itself clearly from neighboring La Défense.