Zimmermann Sutter Architekten

Description

The Wiedikon Housing Cooperative aimed to replace a 1970s building with energy deficits and non-accessible, outdated units through a new development. We proposed a mix of refurbishment, roof conversions, extensions and new construction for Colony 1. Careful phasing and differentiated intervention depths allowed for a socially responsible implementation. Architecturally, the new building’s restrained expression integrates harmoniously with the existing context, creating a cohesive presence typical for the neighbourhood. A kindergarten and community room connect the ground floor with the urban realm. Further key elements – such as the courtyard passage, open stairwell to the communal terrace, and balconies –enhance internal and external connectivity, encouraging interaction among residents and the wider community. The previously underutilised courtyard is revitalised into a vibrant shared space. A variety of uses promotes social exchange and collaborative life. Green spaces, rooftop gardens with an outdoor kitchen, and herb and berry plantings improve the microclimate through evaporation and water retention. Through densification and resource-conscious development, the project achieves ecological and economic value. Existing structures are systematically refurbished and upgraded for energy efficiency. A woodchip heating system and rooftop photovoltaics support sustainable energy use. Insulated and expanded attics add living space and reduce overall energy demand.