Since the 1965, on Ile-de-France’s urban area, different plans have focused more and more on environmental priority and quality of life. The urban sustainable development is a requirement and gradually as brought about the evolution of the morphology of the Paris conurbation. The creation of “villes nouvelles” (new cities) and the multiplication of projects for ecodistricts are an illustration. Emergence of these new morphological structures has initiated a turning point town planning (Chevalier, 2007) and is identified from the plans. This change in the urban planning can be translated in outer suburbs by a slowdown in the agricultural space consumption and in the urban sprawl.