Brussels and its edge are considered as two urban systems separated by a green belt. Where Brussels is a compact dense city, the edge is a dispersed urban configuration. Yet Brussels centre and the edge function as one system, as communicating vessels. One of the important elements in this interdependence is the demographic pressure. Brussels is facing a demographic boom that will to a large extend influence the edge. This studio explores the form and the possible strategies of this extension. The main question is how to address this demographic boom in a non-metropolitan context. Do we consider the edge as an extension of Brussels or as a new urban system? A question raised by both the Flemish administration of spatial development (RWO) and in the study on metropolitan landscapes in the Brussels region.