Abitare i quartieri del novecento nella città contemporanea

European Community policies, aimed at the promotion of environmental, social and economic development, have led countries to enable actions oriented to urban and building regeneration, pursuing goals of environmental protection, arising from international agreements for saving resources, reducing greenhouse gas emissions, promoting renewable energy sources etc.. The topic of urban and building regeneration is therefore one of the main themes to deal with, since the impact of buildings on the environment is accepted as a significant and relevant entity. A topic/place particularly important for what concerns the refurbishment of existing heritage, consists of 20th century neighborhoods realized as a center for the development and now part of the consolidated fabric of contemporary city. The existing heritage, indeed, in its design, functional and constructional characters, can still deal effectively to the new housing demand, whether instances of environmental crisis and those of financial and economic crisis are declined and resolved according to potentialities of building and urban plan. Some of those neighborhoods, created as stand-alone center or as expansions of previous quarters, have peculiar plant and architecture features: parts of the city with specific relationships between building, road and public space; buildings that include collective spaces (drying areas or volumes on the roof, public areas and arcades) and singular elements (loggias, open stairways, etc..). The paper will focus on compositive and technology questions that need to be addressed in these processes of urban and building refurbishment, focusing on the compatibility criteria of new projects with the existing heritage and on possible technical and design solutions, large-scale or even punctual, in order to induce virtuous processes of spaces reappropriation by the users. With respect to the framework described above, the paper presents results and reflections of a preliminary research and design experimentation conducted on some buildings of the seventies of the 20th century of Rione Duca D'Aosta in Naples.