Chipperfield’s design was selected from an initial 214 anonymous entries to Zurich’s Department of Structural Engineering, which organised the competition. These were subsequently narrowed down to 20 in the first round of judging in March.
This 20-strong shortlist included Caruso St John, Max Dudler, Steven Holl, Rex Architecture and Sauerbruch Hutton.
The extension will house galleries for displaying new media, prints, drawings and photography. It will also have classical gallery space for the museum’s Bührle collection and 19th century artworks.
The winning design will be announced formally on December 15, and an exhibition of all 20 shortlisted projects will be held at the Kunsthaus from December 16 2008-January 11 2009.
The scheme is one of the first elements of the city’s central development plan to get under way, and is due for completion in 2015.
The 20 shortlisted architects in full:
Andreas Fuhrimann/Gabrielle Hächler, Zurich
Annette Gigon/Mike Guyer, Zurich
Arge Grazioli/Krischanitz, Zurich
Barkow Leibinger Architekten, Berlin
Caruso St John Architects, London
David Chipperfield Architects, London
Diener & Diener Architekten, Basel
Eckert Eckert Architekten, Zurich
Josep Lluís Mateo MAP Arquitectos, Barcelona
Luis Mansilla & Emilio Tuñón Arquitectos, Madrid
Marcel Meili, Markus Peter Architekten, Zurich
Max Dudler Architekten, Zurich
Mazzapokora, Zurich, & Buchner Bründler, Basel
Miller & Maranta, Basel
Oskar Leo Kaufmann/Albert Rüf Ziviltechniker, Dornbirn, Austria
Pool Architekten, Zurich, & Aires Mateus & Associados, Lisbon
Rex Architecture, New York
Rüssli Architekten, Lucerne, & Steven Holl Architects, New York
Sauerbruch Hutton, Berlin
Sebastian Irarrazaval Arquitectos, Santiago, Chile