The project consists of building a house inside of a house, which means that it is more similar to the process of building a single-family house than an interior rehabilitation. This is because it has its own structure, enclosures, and installations. The concept of the project was to generate 10 horizontal structures in different heights, embracing different functions. These structures meet the costumer’s needs — above and beneath them, depending on its height. The volume allows the development of different uses and scales, offering both intimate and collective spaces.