Located at the heart of the island, at the intersection of boulevard Gustave Roch et Boulevard Victor Hugo, this development houses all the social services of the Loire Atlantique Department as well as the Departmental Centre for Disabled People (MDPH).

The building is composed of a ground floor area open to the public and meeting rooms upstairs opening onto large terraces in the centre courtyard.

The administrative offices are located on the upper floors. The building is built around a garden courtyard.

It is a low energy consumption building.