43/45 Viviani Street is part of the overall requalification project for the Viviani/Vallée-Béreult sector. Strongly landlocked by the railway beams to the north and east, as well as by the Tancarville Canal and the port activities linked to them in the south, this district has retreated to itself over the years and has today, despite a very high functional and urban diversity, significant malfunctions that weigh on the daily lives of the inhabitants. The NPNRU programme, initiated in April 2015, intends to integrate this urban complex into the requalification of southern neighbourhoods. The latter determines major urban orientations and identifies several operational sectors, including the Viviani/Royer site. This site, characterised by the presence of local facilities (square, football stadiums, tennis courts, association room, children’s playground), also has many landscape qualities. Only the enclavation of these 42 000 m² within a pavilion fabric and vast rights-of-way of closed activities today provides this right-of-way, disinvested by the inhabitants of the neighborhood, an unattractive image. The reclassification of this historic site into a pleasant neighbourhood square will then become one of the key points of the expanded urban renewal project. The requalification operation of the square Viviani will therefore aim to open up this sector and propose a new urban framework to the inhabitants and users of the district. The public spaces will be redesigned to offer a greater diversity of use and biodiversity, with the creation of family gardens instead of the Viviani Square, which consisted of an expanse of grass, and the creation of 80 dwellings of individual type. These new housing units will meet the needs of the habitat renewal district. The operation will significantly improve the living environment and aim to combat sprawl on the periphery by offering a diversified housing offer in the metropolitan heart, near the future tram route. The requalification of the Viviani sector is organised in two main phases: — Phase 1 (works from Q4 2021): redevelopment of the Viviani Square in order to accommodate the Dubuffet family gardens whose freed right-of-way will be incorporated into the development perimeter of the landscaped sports park following the demolition of the Graville group the Alcéane Valley, – Phase 2 (works from the first half of 2024): at the opening of the landscaped sports park, the use of the right-of-way of the current Marcel Royer stadium for the construction of approximately 80 housing units. By demolishing and depolluting the wasteland of 43/45 Viviani Street, the project will contribute to the requalification by proposing a new land within the limit of operation. The liberated land will allow the development of a new road and public spaces to open up the future heart of the island and strengthen the mesh.