The support structure made in BauBuche is exposed at ground floor level and carries the timber frame construction of the upper floor. Airy and spacious, the newly built second floor extends into the pitch of the roof. In its geometry and material structure, it juxtaposes the character of the existing solid building. The exposed BauBuche beams and the beech ceiling panels form a pleasing ensemble.

The two workspaces are connected by stairs made from BauBuche panels whose upright veneer layers echo design elements used in the upper office space.