摘要:Abstract The aim of this paper is to study and apply Valuation Methods to the constituent phase of Reggio Calabria's development into a metropolitan city. With specific reference to the tools that are functional to the attainment of Participation objectives that are able to improve social agreements. The methodological approach is to start a path of information and training, in order to understand to the citizens the Convenience Ethics. So, to support this study, to dissemination of the Culture of Valuation, integrating the traditional approach with other kinds of social approaches, in order to become a tool to support public decisions.