A Systematic Review of the Existing Literature for the Evaluation of Sustainable Urban Projects

From the 21st century to the present(2021), a worldwide awareness that cities' development must be based on projects for socio-economic growth and environmental protection is increasing. World governmental agencies and the European Union have suggested action strategies for the construction of << prototype cities >> whose value must be founded on the inclusion and/or preservation of anthropic-natural elements and their effects on territories. In order to minimize the theoretical-practical gap between planning and project design with a view to sustainable development and the evaluation of their performance from economic, social and environmental points of view, the present contribution aims to outline a framework useful for systematizing the main scientific contributions concerning sustainability and the evaluation of urban transformation projects. The objective is pursued by analyzing bibliographic references with specific regard to the use of logical-operative methodologies used to rationalize the processes of interventions' evaluation and selection. The task of examining the available literature is carried out with an investigation protocol of four sequential steps. From the implementation of the last one, the evidence expressing the heterogeneity of the examples in the literature is described. Accordingly, the theoretical-methodological framework for the project evaluation from an urban sustainability perspective is illustrated.