| Locksmith | Building Labbe | eno architectes |
| GO | Constructions Jaouen | eno architectes |
| Carpentry / joinery mixed | Daniel Thepault | eno architectes |
| Interior woodwork | Plassart | ALTA architectes - urbanistes, eno architectes |
| painting | PRC | OMA, Atelier PRO architekten, +2 |
| Plumbing / heating / assisted natural ventilation | Prothermic | eno architectes |
| Joinery Partitions / dubbing | Rodriguez Gego | eno architectes |
| Electricity | Saitel | eno architectes |
| VRD | SAS Le Roux | eno architectes |
| Floors | SAS Pierre Cariou | eno architectes |
| Sealing | Soprema | Herzog & de Meuron, OMA, +128 |