The building is located in the old town, so the degree of protection did not allow any variation in the facade. Existing carpentry was maintained, and new carpentry was executed inside the facade in white wood, to guarantee the necessary conditions of comfort. As it is a building located between two other existing ones, and with a mandatory predefined volume, the play with the different interior elements will allow a fluid spatial articulation.

The basic premise of the intervention is to integrate into the environment, and try to overcome the geometric limitations of the building, pursuing spatial continuity and capturing natural light, through interruptions in floors, double heights, use of transparent closings, and a light and immaterial staircase. The architects have also mantained the balance between traditional materials and the use of current construction systems, simplifying the number of construction solutions to achieve a low cost intervention.

Due to the risk of collapse of the bearing walls, especially the dividing walls made of masonry, a mixed structure of rolled steel profiles and solid concrete slabs was chosen. For the two roof skirts, a metal structure and a slab formed by sandwich panels formed by cement wood boards and cork insulation are used. As an act of constructive sincerity, all the elements of the structure are kept exposed, applying a sealing primer on the concrete, and painting the entire metal structure.

Light will be one more material, studied in a bidirectional sense, from the interior to the exterior and vice versa, the basic premise in the design of the lighting being the theatrical effect of chiaroscuro, and the use of low consumption luminaires. For lighting, LED luminaires were chosen, both for direct lighting and indirect lighting elements, and handrails.
As accent lighting, a suspended electrified three-phase track is arranged in the undercover area, where projectors with LED superspot optics are connected. In continuous lighting lines, it is sought to filter the light by placing a micro-perforated sheet metal, generating a diffuse lighting effect, with cast shadow.

It is chosen to reduce to a minimum the palette of materials, seeking the balance between traditional materials and new materials. In the façade and party walls, the existing stone walls are kept, using white wood for the exterior carpentry. For the interior, in the study area on the ground floor and on the first floor, exposed concrete slabs are left, applying a sealing primer. The stone masonry facings are painted in white, and for the flooring a cementitious self-leveling flooring is chosen. The prism that encompasses the service area, and the ground floor toilet is lined with cement wood boards. For the housing area, the exposed concrete slab structure is maintained, but warmer finishes are chosen, using chestnut wood flooring of different widths and open joints, both in flooring and in the covering of some of the vertical surfaces, in bedrooms and bathroom. In the low-deck area, cement wood sandwich panels and cementitious pavement are maintained.

All the furniture is designed on purpose for each of the spaces. With materials and elements recovered from the demolition, such as the old door, the dining room table and the living room furniture are executed. The storage of the house is resolved with a continuous closet area that runs the entire length of the house, and which is articulated folding according to the different needs and geometry of the house.