1st Prize in the project competition for the Civic and Social Center of Salardú (Naut Aran). Collaboration with the bxd arquitectura studio offering consulting services on aspects related to sustainability. In this case, our work focused on defining strategies to reduce the ecological footprint of the construction of the building as well as optimizing its energy efficiency during its operation. At the same time, different project decisions were considered that allowed for the reuse of the water cycle, thus reducing the water footprint of the building.