The four courtyard houses are located on a hilly plot on the top of the settlement area of Zumikon/Switzerland. The typology of the courtyard house is a reaction to the strict building regulations of the community, which unable a concentration of the living areas. With the chosen structure a high level of quality and privacy in the indoor and outdoor spaces could be achieved. Instead of an individual sprawl of private gardens a generous, common park landscape connects the ensemble with the natural environment of the neighboring forest. The four houses are built up in a modular way, identical in the basic conception but mirrored in the common middle and reacting individually to the particular topographic situation.