Abstract
The principles of circular economy begin to be essential to favor sustainable processes and Finland is one of the few countries in the world that has developed a detailed plan for its application. Indeed the SITRA world map obviously affects construction industry at different levels and benefits are described through two operational addresses: the implementation of Housing First program by the Y-Foundation, that enhance a better usage of housing building heritage in order to solve a critical social issue, and the extensive use of wood elements for building construction, that introduces new ecological innovations into a consolidated technical tradition.