The challenge of this new home lies in approaching the process leading to the architectural project with creative and constructive line guides able to resolve the decisive conditions inherent to the project. Concretely, for Josep Ferrando, the starting point was to recreate a completely new house between the walls in the centre of Sant Cugat, which is considered a cultural patrimony, and therefore obliged the preservation of the house’s main facade and roof. In addition, the building had to be less than 5 meters wide and deal with a complex topography which constrained the site between two streets with different heights.