The house is parallel to the street and at an angle to the plot. A timber structure is erected in the armpit between the house and the common wall, elongated like the length of the plot. The simple rectangular volume is composed of a rhythmised series of pine rafters, integrally glazed on the longitudinal side and fitted with a double-opening window at the head. This frames the garden view, while the four-metre-high glazed curtain wall lets in ample daylight.

As shading, a gable board is attached to the structure vertically, like a fin. By building against the side, the original house retains its individuality and daylighting, while creating a new cohesion. The old front door moves to the side of the house so that the existing layout can be optimised.