The project consists of a reform and expansion of a single-family home located on Paseo de Valldoreix, Sant Cugat de Valles, Barcelona. It is a house that is developed on 3 levels. Regarding interior carpentry, an important aspect to consider in this project was environmental sustainability, energy efficiency and the use of ecological materials (FCC certificate). A minimalist design with a reduced use of materials, two colors predominate, white and wood, through the use of panels, doors and oak veneer finish furniture, all custom made.