The new environmental therapy building is connected to the existing activity building. Various sociotherapeutic activities take place in the environmental therapy building: communal meals, group discussions in the living environment, daily opening and closing. The environmental therapy building also serves as a residential building for five different living environments. Each group has its own segment in the building, with its own front door. Downstairs, there is the communal living room and kitchen, on the first floor are the bedrooms, and on the top floor are group spaces. This arrangement bears a strong resemblance to the traditional row-house design, with the living room downstairs, bedrooms upstairs, and a large play or hobby area in the attic.
To achieve a good landscape integration in the park-like surroundings, the building is designed in a curved, ascending form facing towards the forest. The sloping roofs are covered with green sedum, giving it the appearance of an inhabited hill when viewed from the forest. On the inside, the front facade is a sleek, curved brick wall with tall incisions at the location of the front doors and the stairs.
For the verbal therapy component of the complex, the adjacent former Jelgersma clinic has been partly renovated and adapted.