The existing extension is demolished and replaced by an open space under a new gable roof. The ridge beam, designed as a slight vierendeel, aligns with the subdivision of the main building and sets a stride aside. It spatially suggests two zones: a narrower functional strip, and a wider completely free one. A bite from the roof leaves room for an existing window in the rear façade, casting light into the deepest point of the extension.

On the garden side, the roof shoots through into an awning, sheltering the terrace and the south-west facing facade. The folding window in the rear façade can be fully opened and the fixed window profiles hide invisibly behind the structure, allowing the space to extend uninterrupted into the garden