For this project, we transformed an unused industrial building, located in a block of the expansion area of the city, into a house for a young couple. The volume receive large quantity of light coming from the roof, but being in the inside patio of the block, it had no windows facing the exterior street. Connecting to the street, we design a first area, used as the working space. From there, a series of patios create a filter between the working and the living area. In the inner part, a large day space opens next to a new patio which creates the sensation of an exterior space. A light structure mezzanine is designed to hold the main bedroom.