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UBS AG, Zurich

UBS Grünenhof, Zurich

Zurich, 2010, renovation and addition to a historic landmark, office building, 12'600 m2

The UBS Grünenhof project was a combination of repair work, monument protection and new construction near Bahnhofstrasse and Paradeplatz, in Zurich city centre. A total renovation was planned for the eastern, southern and western parts of the Grünenhof, with the ensemble being completed by the Delphin partial replacement building. With its precise vertical separation and the conservative choice of materials, it fits in discreetly between the two existing buildings, while still giving the block a facelift. The listed envelope of the structure, which dates back to the 1940's, was also renovated. This required combining the ambitious aims of the project with the specifications of the City of Zurich for monument protection and was achieved using inside insulation. The complex building services posed particular demands. The Grünenhof area is not an autonomous complex, but is linked to other properties, mostly owned by the UBS. The underground heating and cooling installations also supply surrounding UBS buildings. For this reason, it was essential to ensure continuous operation during the construction work. In a period of around three years, 14',000 m2 of new office and commercial floor space was created on top of an area of almost 4'000 m2. The renovated and expanded Grünenhof combines nearly 900 work stations, a conference centre and exclusive retail space under one roof.

Assignment

Renovation and new construction

Client

UBS AG, Zurich

Location

Nüschelerstr. / Pelikanstr. / Talacker / St. Peterstr. 8001 Zurich

Planning phase

December 2006 - December 2009

Construction phase

Renovation: October 2007 - February 2009 / New construction: March 2009 - June 2010

Budget in CHF

ca. 55 Mio

Gross area

Open-plan office: 12´600m2 / Retail: 1´200m2

Work stations

900

Type of commission

GC-Competition with Halter AG Generalunternehmung, Zurich

Award

best architects 12

Architecture
Stücheli Architekten AG

Andrea Berger, Sandra Dietiker, Kerstin Fleischer, Andrea Fornaro, Christof Glaus, Juliane Grüning, Carmen Hagen, Henrietta Krüger, Andreas Mosimann, Agim Sadiki, Eva Schaub, Heinz Wegmann

General contractor
Halter AG Generalunternehmung, Zurich