Rosau Office Building

The new L-shaped office building opposite the Tonhalle on the corner of Gotthardstrasse and Claridenstrasse is integrated into the perimeter block structure along Claridenstrasse and tapers in width towards the lake. Villa Rosau and its surrounding gardens remain true to their historical conception. The green area forms a twin garden with the park of the Hotel Baur au Lac on the opposite side of the Schanzengraben canal. The newbuild marks the westerly end of the two gardens, whose beautiful trees border the public square Bürkliplatz.

The parks of Villa Rosau and Hotel Baur au Lac on Lake Zurich bear important witness to the history of the city’s expansion. The gardens flow around the villa and the new building so that the perimeter block development and the freestanding villa in the park form a coherent ensemble. The convergence of architectural and organic garden design also reinforces the organization of the green space into different zones.

New Rosau Office Building

The new five-storey building provides a prestigious location for an international reinsurance company. Main access is from Claridenstrasse, with a spacious entrance hall and staff restaurant, as well as conference rooms on the ground floor. The four floors above house open plan offices, which are connected by three major staircases. The top floor is set back, creating ample terraces on both sides. At the southern end, the boardroom offers vistas across the lake.

The vehicle access divides the ground floor into two separate areas and grants a view from the street to the garden. A public bar and grill are situated at the street corner. The underground parking is accessed from Gotthardstrasse, as are further offices that can be sublet on the upper floors. The upper floors of the wing facing Schanzengraben accommodate two apartments.

The structure is a skeleton frame with recessed columns, braced by centrally located concrete circulation cores. Vertical and horizontal profiles of architectural bronze arranged in varying rhythms articulate the façade. They take up, on a larger scale and with greater geometric regularity, the existing ornamental wrought-iron fences surrounding the gardens.

Location Zurich, Switzerland

Programme Office building with 470 workingplaces, staff restaurant, meeting rooms, gastronomie, two apartments, underground parking

Commission 2008

Planning/Construction 2008–2020

Client Client basic fitout: Villa Rosau AG, Zurich
Client’s representative: Conarenco AG, Zurich
Client tenant fitout: SCOR Services Switzerland AG, Zurich

Gross Floor Area 17‘810 m2

Team G/G Planning/Construction Office Building 2010–2020:
Christian Maggioni (Team Manager from 11/2012), Mathias Rösner (Project Manager from 2011), Michael Winklmann (Team Manager until 10/2012), Martin Bischofberger (Project Manager until 2010), Marco Cristuzzi, Franzis Gericks, Lilla Kis, Lisa Menje, Roman Vetterli, Rodrigo Jorge, Christoph Lay, Milica Brockmann, Christoph Dober, Brigitte Rüdel, Griet Aesaert
Planning Residential/Office Buiding 2008–2009:
Michael Winklmann (Team Manager), Christoph Justies (Project Manager), Mark Zjörjen, Christoph Dober, Cornelia Schmidt, Karin Schultze

Construction Management b+p baurealisation ag, Zurich

Landscape Architecture Vogt Landschaftsarchitekten, Zurich

Structural Engineer Locher Bauingenieure AG, Zurich

Electrical Engineer IGB B. Graf AG, St.Gallen

Building Services Engineer Gruenberg + Partner AG, Zurich

Building Physics Engineer Kopitsis Bauphysik AG, Wohlen

Fire Safety Makiol+Wiederkehr, Beinwil am See

Facade gkp fassadentechnik ag, Aadorf

Interior Design Tenant fit-out Scor and Apartments: Gigon/Guyer Architekten, Zurich
Scor Furnishing: Ina Rinderknecht Interior Architecture AG, Erlenbach
Grill/Bar: Gigon/Guyer Architekten with Atelier Zürich

Signage Trix Wetter, Zurich (Gate, Villa Rosau)

Photos © Roman Keller

Address Glärnischstrasse / Claridenstrasse, CH – 8002 Zurich

Refurbishment of Villa Rosau

In the course of the project for the new office building, Villa Rosau was completely refurbished. The historical villa was constructed by the architect Ferdinand Stadler in 1844/45 for residential use. As most of its original substance was lost during previous remodelling, conservation efforts were concentrated on the building envelope. It was thoroughly renovated and in places restored to original condition. Furthermore, the building received a new structural foundation, while the former spatial arrangement was rebuilt from scratch. The villa houses the Club Baur au Lac and comprises a semi-public bar and restaurant on the ground floor with meeting rooms, a fireplace lounge and offices on the upper floors.

Location Zurich, Switzerland

Programme Club Baur-au-Lac, lounge, restaurant, kitchen, seminar rooms, offices

Commission 2009

Planning/Construction 2009–2020

Client Basic construction: Villa Rosau AG, Zurich
Client’s Representative: Conarenco AG, Zurich

Gross Floor Area 2‘104 m2

Team G/G Christian Maggioni (Team Manager from 11/2012), Mathias Rösner (Project Manager from 2011), Michael Winklmann (Team Manager until 10/2012), Martin Bischofberger (Project Manager until 2010), Roman Vetterli, Christoph Dober, Karla Pilz, Griet Aesaert, Daniel Friedmann

Construction Management b+p baurealisation ag, Zurich

Landscape Architecture Vogt Landschaftsarchitekten, Zurich

Structural Engineer Locher Bauingenieure AG, Zurich

Electrical Engineer IGB B. Graf AG, St.Gallen

Building Services Engineer Gruenberg + Partner AG, Zurich

Building Physics Engineer Kopitsis Bauphysik AG, Wohlen

Fire Safety Makiol+Wiederkehr, Beinwil am See

Interior Design Club Baur-au-Lac: Atelier Zürich

Photos © Roman Keller