STACK GARDEN is a visionary prototype for ‘green housing’. The given project site was a square with 100×100 meters. Special focus was given to include green areas in the whole concept and to enable access to a personal garden for every apartment. On the ground floor a green central square is surrounded by public workshops and space designed for flexible usage. Without negatively affecting privacy, the building supports community living between neighbors. Hollow core slab ceilings combined with cross laminated timber walls create a great symbiosis between efficiency and light weight construction. With simple and effective ideas a residential building was developed, designed to unify people and nature.