Blas House is a minimal residence located in Buenos Aires, Argentina, designed by adamo-faiden. The upper house of the set presents the possibility of being extended, finding above itself the space to house programs related to leisure activities in contact with the air, the sun, and the sky. An accumulation of existing flat roofs at different heights becomes the floor for the new construction, distributing a series of indoor and outdoor areas that are connected together. An envelope conformed by opaque, transparent and permeable elements covers the old house in all its extension, opening new possibilities of relationship with the environment.