International audienceIn the context of a new research project concerning the link between migration and urbanization, this article seeks to explain how migrants, through their investments, contribute to the urban fabric of their country of origin and become key players in the development of cities. The return of the Burkinabè from the Ivory Coast, considered by the Burkina government of B. Compaoré as a risk of economic and social destabilization, has generated a new vision of the migration phenomenon. The Burkinabè coming from foreign countries used to be disregarded, but are now considered as potential developers. Since 2002, the public and private sectors have been setting up schemes not only to facilitate but also to orient their inves...