In this paper we report the methodology developed by our group to study the life quality in the city of Naples. The general concept of “quality of life” has been a central topic of interest in relevant social debate in the recent years.The goal of this study is to analyze aspects regarding the citizen's life, and involves economic, social and cultural aspects of individual life. For the all the 21 Districts of the city of Naples, we analyzed services, perceptions and needs of the citizens. The model that we developed has been considered an original one since takes in account both, the objective and the subjective aspects. The objective aspects are related to the quality of identified factors defining the level of the city welfare; the subjective aspects involves the citizens' needs.The model has been considering two different points of view: the supply, addressing the concept of welfare from an objective viewpoint; the demand, addressing the concept of life quality from a subjective viewpoint.In this paper we present the methodological approach and the quantitative results of our research.