From all of the Paris housing initiatives, we include a total of six small- and  medium-sized projects that adapt to empty lots of the consolidated city. This offer includes, as in this case, groups of users with special needs, in an attempt to maintain diversity in the urban fabric. The project provides light for halls and common areas by means of patios. Both the floor plan and structure were designed with a future extension in mind, using the free space resulting from the demolition of the existing building on the corner of the plot.