This article presents a description and a critical reflection of some methodological issues involved in a number of participative planning projects that have been carried out in several cities and/or communities in Mexico and other Latin-American countries since 1994. The projects involved the design of regional development plans based on a vision shared by the corresponding communities. The projects include the participation of a large number of people, representing the various sectors of the populations concerned as well as the leading (...) opinion groups of those communities. The methodological approach of the projects is based on prospective and participative planning techniques. (shrink)