This project explores the theme of "transplant" as a tool for customizing a banal object. It reflects the desire of the client to honor a standard house bought 20 years ago by appropriation to make it his principal residence. Result of technical constraints (foundations difficult and wish for a minimal footprint in favor of a generous garden) and program (desire for an isolated space and benefiting from a private outdoor space), the project extension is directed to a heightening of the existing buildings.This heightening takes the shape of a "box", "tube" that only allow opening onto the garden and the street. A slight shift of this volume cantilevered on the north face frees a terrace open to the south.The project was completed in timber frame and wooden lattice facade covered in perforated reminder of the many trees on the site. For the sake of integration, all the woodwork of the existing (frames and shutters) were painted in gray, sober hue establishing a dialogue with the existing white facade. This construction includes the HQE (French Ecological Label within the exterior insulation, roof terrace vegetated, rainwater recovery and upgrading a thermal device dubbed the entire ground floor available) and provides a second phase consisting of integrating a photovoltaic power generation.