In the early 2000s, the City of Saint-Dizier launched an Urban Renewal Project (PRU) in the Vert-Bois district. The profound transformations have led to a real qualification of the public space, a renovation of the housing stock and a general improvement of the living environment of this sector. The shopping centre, located in the heart of Vert-Bois remains one of the last areas of the district to be requalified. This equipment has suffered for several years from a significant deterioration; it is now weakened because of a high vacancy rate correlated with an unattractive commercial offer. The need for a requalification intervention, without which the threat of devaluation of the project carried out for many years is real, is confirmed by all the studies carried out within the framework of the SRP. Built on a part of the district located at the convergence of different residential areas, the shopping centre, very attractive until the 1980s, has suffered for several years from a significant deterioration of its premises and a withdrawal from itself. The transformation of the neighbourhood and its surroundings now concentrates the negative focus on the shopping center which now crystallises in one place the visible and invisible difficulties of the whole neighborhood. The public safety and security study also targeted the mall as a black spot for public safety. It has become the epicenter of an area in which