The project is modulated by its own formwork system that provides flexibility by being able to exchange a position span to receive a door or a window in any wall of the module. The falsework system is made up of rolled steel sheets, where the mixture of sand-colored concrete. The project manages to understand the wall as a pure element that articulates the habitable. Every wall is at the same time a wall interior, exterior facade, structure, texture and finish. The centering offers answers to the original questions of modern architecture: provides the possibility of a modular construction