From more than 50 years, Compagnons Bâtisseurs acts close to inhabitants with economic disabilities in order to follow a double aim : non formal education and housing renovation. This action is based on participation which means we work along with the families. Volunteers participate in all actions implemented by the organization : housing renovation actions (self-accompanied workcamps...) and local improvement heritage actions (natural landscape...). Since a few years, Compagnons Bâtisseurs developped the hosting and the sendng of yougsters wtih less opportunities. Those young people are mostly exposed to economic and social disabilities. The youngster sent abroad will participate in a different kind of project (environnemental cleaning). This project takes part within the international network Alliance. This organization works indeed on inclusion issue. It had particularly contributed to create special tools related to reinforced mentorship, the main condition to succeed this kind of projects. The impact on the volunteers is to open their mind and also to empower them.