The approximately 70-year-old buildings on the Bergacker estate are no longer up to date and are in need of renovation. It is not feasible to renovate them while they are occupied, which is why the owners, Swiss Life for the western part of the site and Habitat 8000 for the eastern area, have decided in favour of a comprehensive replacement building.
Test planning was carried out back in 2019 to develop a sustainable urban planning solution. The result is a concept based on four-storey terraced buildings that are arranged along the slope and create generous, green open spaces. These “garden courtyards”, developed by EMI Architekten and Maurus Schifferli Landschaftsarchitekt, tie in with the original garden city idea and promote the quality of life.
Sustainability as a guiding principle
The entire construction project is designed in accordance with the highest sustainability standards and aims to achieve the “Gold” certificate of the Swiss Sustainable Building Standard. Energy is supplied by geothermal probe heat pumps and photovoltaic systems, making the neighbourhood largely self-sufficient in renewable energy. Green roofs and climate-resistant outdoor spaces with wildflower meadows and shady trees promote biodiversity. At the same time, a large proportion of the garden courtyards remain unsealed in order to improve natural water management.
In addition to ecological sustainability, the social component also plays a central role. The new building will create a total of 270 flats with 1.5 to 5.5 rooms, which are aimed at a broad public, from singles and families to older people. The focus is on affordable living space that is suitable for all stages of life.
Living quality through intelligent architecture
The new buildings make optimum use of the hillside location to offer maximum living comfort. A noise-reduced mezzanine floor has been created on the street side, while the rooms on the garden side have generous ceiling heights and offer direct access to the green open spaces. The floor plans are designed in such a way that morning sun in the kitchens and evening sun in the living rooms ensure a pleasant indoor climate. Each flat has two outdoor areas in the form of a loggia, a balcony or a terrace with a private garden.
Particular emphasis is placed on communal areas. In a participatory process, tenants expressed a desire for seating, playgrounds, barbecue areas and urban gardens, which are now being integrated into the planning.
Staggered implementation for a smooth transition
To ensure an orderly transition for residents, the new building will be realised in several stages. The construction project planning should be completed by the end of 2025 before the first construction phase starts in 2026. The first new buildings are expected to be occupied in 2028, while the other construction phases should be completed by 2030.
Swiss Life tenants will be actively supported throughout the entire process. They will receive help in finding accommodation, have priority when re-letting within the neighbourhood and benefit from flexible notice periods.
A showcase project for sustainable living
Gartenstadt Bergacker is becoming a forward-looking neighbourhood that combines sustainable construction with a high quality of living and a social mix. Conscious planning and the involvement of the tenants will create an environment worth living in that fulfils ecological, economic and social requirements in equal measure. The project sends out a strong signal for the future of sustainable living in the city of Zurich.
