| Gustave Delory - Mayor of Lille (socialist) | Decides to build a new hotel. |
| Émile Dubuisson - Project architect | Designs the building and its belfry. |
| Roger Salengro - Mayor of Lille (from 1925) | Add the belfry, office kept. |
| Carlo Sarrabezolles - Sculptor | Realizes the statues of Lydéric and Phinaert. |
| Jean Pattou - Architect (Tandem+ agency) | Designed the modern extension in 1992. |