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Judges make their choice: architecture competition for first plots on Werk 1 at Sulzerareal site in Winterthur

Sustainable and affordable housing that meets 2000-Watt Society criteria | Winning project impresses with high quality architectural concept

Dietlikon, 8June 2016 – Implenia is building a new mixed-use, sustainable neighbourhood at “Werk 1” on the Sulzerareal site in central Winterthur. “Werk 1” will be a place for living, working, leisure and education. As well as prioritising sustainability and providing affordable housing, it will offer generous amounts of open space and ensure that historically valuable buildings are retained. Development of the site is progressing on schedule: voters in Winterthur approved the development plan by a 60% majority over a year ago. The first architectural competition for Plots 3 and 5b/c was launched in mid-December 2015. Now, a top-level expert jury consisting of city architect Michael Hauser, Mike Guyer (Gigon Guyer Architekten), Astrid Staufer (Staufer & Hasler Architekten), Jakob Steib (Jakob Steib Architekten) and Peter Wehrli (RWPA) has now chosen the winning projects from the options presented by six prequalified architectural teams. Around 270 homes occupying a total of 28,000 m2 of floor space are planned for Plot 3. Implenia is developing and building these in collaboration with the Winterthur cooperatives Gesewo and gaiwo as well as the Adimora investment foundation. Plots 5b/c are earmarked for town houses. The winning project, submitted by the “Baumberger & Stegmeier Architekten und Kilga Popp Architekten” consortium, features architecture that reflects the historical identity of the site while using sympathetic new building to emphasise its uniqueness. Jury member Mike Guyer was impressed by the quality of the design: “The project succeeds very well in its mission to keep the main focus on the site and its industrial history while paying due regard to the specific architectural challenges of the Sulzerareal development.” City architect and jury member Michael Hauser has been impressed with the housing providers’ commitment. “I’d also like to thank Implenia for organising the process so carefully,” he said. A central priority for all the plots in the project is fulfilment of the strict sustainability criteria set out by the 2000-Watt Society initiative (SIA energy efficiency path – MB 2040). Minergie-P label standards are also being applied to Plot 3. Implenia and the investors will start project work on Plot 3 very soon. Construction can begin in 2018, assuming planning permission is granted. If everything goes according to plan, the first residents will move into their new homes in 2021. An exhibition featuring all the submitted projects will open in summer 2016.

Implenia press contact:

Philipp Bircher

Head of Communications Group

Tel.: +41 58 474 74 77

communication@implenia.com

Mixed residential properties, from non-profit and low-cost housing to owner-occupied apartments, are being built on Plot 3. The picture shows the winning project by the Baumberger & Stegmeier Architekten und Kilga Popp Architekten consortium. (Picture: Architects)

Plots 5b/c are earmarked for town houses. Here too, the winning project came from the Baumberger & Stegmeier Architekten und Kilga Popp Architekten consortium. (Picture: Architects)

A new, mixed-use sustainable neighbourhood is being built at “Werk 1” on the Sulzerareal site in Winterthur. Covering an area about a third the size of Winterthur’s old town, it will meet the highest standards in terms of sustainability, good low-cost housing, generous open spaces and retention of historically valuable buildings.


Implenia, Switzerland’s leading construction and construction services company, also has a strong position in the German, Austrian and Scandinavian infrastructure markets. Established in 2006, Implenia can look back on around 150 years of construction tradition. It brings the expertise of its highly skilled sectoral and regional units together under the roof a company active throughout Europe. With its integrated business model and specialists operating in all areas of construction, the Group can manage a building project through its entire lifecycle and deliver work that is economical, integrated and customer-centric. The focus is on striking a sustainable balance between financial success and social and environmental responsibility.

Implenia, with its headquarters in Dietlikon near Zurich, currently employs more than 8,000 people around Europe and posted revenue of around CHF 3.3 billion in 2015. The company is listed on the SIX Swiss Exchange (IMPN, CH0023868554). More information can be found at www.implenia.com.