The Democles (“Demo” for demolition and “Cles” for keys in French) project aims at identifying the key factors to improve the recycling rate of finishing work waste. Another important goal is that contractors comply with these requirements through a set of different activities and documents that bring sector new tools to undertake these objectives. Specific aspects of DEMOCLES are: (1) Identifying the operational and economic difficulties related to on- site sorting and the treatment solutions; (2) Defining a common and reliable framework for on-site sorting of finishing work wastes to develop recycling at a reasonable cost; (3) Formulating practical and operational recommendations to be used by clients and C&D; companies for waste management; and (4) Formulating some recommendations regarding the necessary training for on-site sorting. The initiative involves 28 stakeholders of the entire value chain. A steering committee is coordinating the project, four working groups are working on specific issues and up to 10 demolition sites are object to case studies in order to test and analyse some tracking tools as well as on-site sorting practices and treatment solutions.