Located in a residential area in the central part of Mexico City, the house becomes an exercise to achieve simultaneously openness and privacy. How is it possible to accomplish spaciousness while surrounded by massive houses on adjacent sites? How is it possible to achieve spatial flexibility under a program based on divided and isolates spaces? With a system of overlapping boxes the project takes shape allowing the fluidity of space achieved by adding up and connecting different spaces (boxes), and in other cases, leaving the boxes as independent and closed elements.