This study takes a look at the Unite d'Habitation at Briey-en-Foret in France, the lesser-known Unite in the canon of Le Corbusier's work, delving into its history whilst addressing parts of its post-design adaptation such as those by its residents. In light of its complex post-occupancy history, the study adopts qualitative strategies to critically evaluate the idea of architectural success in light of this often overlooked yet significant Le Corbusier project. Of the five Unite housing projects designed by Le Corbusier (1885-1965) f.k.a Charles-Edouard Jeanneret, Briey's Unite was the fourth completed. Its story and situation are considered here to be the most interesting, and possibly the most relevant for many of today's questions on the concerns of housing and mass home building.