Emergency requires fast action. But urgency tends to be wrongly associated with delivering disposable solutions. We proposed to frame the problem of emergency shelters as an advance of the definitive reconstruction so that once emergency is over, shelters can be dismantled and become part of final solutions. Shelters seen as a kind of down payment allow for better quality of temporary units, but also make definitive reconstruction easier, since part of the square meters to be delivered, are already in use by the families.