Given the current crisis of poor housing, we invite you to imagine original solutions to design habitable modules that would be inserted under these existing and unused roofs (roofs of agricultural sheds, industrial wastelands, railway or military heritage but also former medium-sized commercial surfaces ...). You will be able to rethink these sheltered spaces and their immediate environment by developing a typology of quality housing, dignified and thought with common sense which will allow to palliate the crisis of the bad housing. More informations