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Project Category: Studies/Competitions

New Building for Music School, Associations and Leisure Center

Location Papieri-Areal, Cham

Competition April – June 2024 (open competition)

Competition Organzier Einwohnergemeinde Cham
represented by Abteilung Planung und Hochbau, Cham

Team GG Annette Gigon, Michèle Favre, Pauline Golüke, Stefan Thommen

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Cost Planning/Scheduling Ghisleni Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Electrical Engineer EBP Schweiz AG, Zurich

Building Services Engineer EBP Schweiz AG, Zurich

Acoustical Engineer BAKUS Bauphysik und Akustik AG, Zurich

Model Modellbau Zaborowsky GmbH, Zurich

Visualization Zuend, Zurich

Extension and Refurbishment of the Office Building Regionalwerke Baden

Location Baden

Programme Listed office building (built in 1934 by the architects Robert Lang and Hans Löpfe; refurbished in 1988 by the architects Herrmann Eppler, Luca Maraini with Manuel Schoop).
Extension of three office storeys above the existing building with a new access core and entrance.
Refurbishment of the listed office building.
Extension of the underground parking garage.
Photovoltaic system on the roof.

Competition Planerwahlverfahren: June – August 2024, 1st Prize

Gross Floor Area 1'347 m2 (Addition)

Competition Organzier Regionalwerke AG Baden

Team GG Annette Gigon, Michèle Favre, Stefan Thommen

General Planning GP Ghisleni Partner AG and Gigon/Guyer Architects

Structural Engineer WaltGarlmarini AG, Zurich

Building Services Engineer Waldhauser + Hermann AG, Münchenstein

Building Physics Engineer Bakus Bauphysik und Akustik AG, Zurich

Visualization Zuend, Zurich

New Building Kantonsschule Zimmerberg

Location Au ZH, Wädenswil

Programme The new construction for 1200 pupils is an ensemble of three differently proportioned buildings:
a multifunctional, semi-public building with a canteen, assembly hall, gymnasium and sports ground on the roof,
a five-storey building for general teaching
and a four-storey building for specialised classes.
An open structure serves as a connecting element between the three main entrances.
The concept allows for different urban compositions and is considered a pilot project for future cantonal school buildings.

Competition March– June 2024

Gross Floor Area 25‘105 m2

Competition Organzier Hochbauamt Kanton Zürich

Team GG Mike Guyer, Stefan Thommen, Carlo Magnaguagno, Elena Hofbeck, Celia Diederichsen (I)

Construction Management Drees & Sommer Schweiz AG, Zurich

General Planning FHZGR Gigon Guyer Partner Architekten AG and Drees & Sommer Schweiz AG

Landscape Architecture Vogt Landschaftsarchitekten AG, Zurich

Cost Planning/Scheduling Drees & Sommer Schweiz AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Building Services Engineer Waldhauser + Hermann AG, Münchenstein

Building Physics Engineer Gartenmann Engineering AG, Zurich

Fire Safety Gartenmann Engineering AG, Zurich

Acoustical Engineer Waldhauser + Hermann AG, Münchenstein

Plumbing Waldhauser + Hermann AG, Münchenstein

Visualization Studio Blomen, Meilen

Photos Model: Modellbau Zaborowsky GmbH, Zurich

Zukunft Kunstmuseum Bern

Programme Exhibition spaces in the existing and new building, studio spaces, cultural property protection rooms, gastronomy, offices

Competition January – April 2023

Gross Floor Area 8'700 m2

Competition Organzier Stiftung Kunstmuseum Bern

Team GG Annette Gigon, Stefan Thommen, Michèle Favre, Dylan Kreuzer, Florian Meissner (I)

Landscape Architecture Lorenz Eugster Landschaftsarchitektur und Städtebau GmbH, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Building Services Engineer 3-Plan Haustechnik AG, Winterthur

Visualization Gigon/Guyer

Photos Model: Modellbau Zaborowsky GmbH, Zurich

Ground floor and 3rd floor
Ground floor and 3rd floor

Housing Development «Am Glockenacker»

Location Zurich-Witikon

Programme Replacement for 19 existing buildings.
Housing development of 170 apartments (2.5 – 5.5-room apartments), day care center and underground parking.

Feasibility Study October 2019 – January 2020

Gross Floor Area 29‘261 m2

Competition Organzier ERSIAN AG, Zurich

Team GG Annette Gigon, Stefan Thommen (Team Manager), Ivana Beljan, Dario Caccialupi, Irma Radoncic (I)

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Structural Engineer WaltGalmarini AG, Zurich

Building Physics Engineer Kuster + Partner AG, Chur

Fire Safety Makiol Wiederkehr AG, Beinwil am See

Heating/Cooling 3-Plan Haustechnik AG, Winterthur

Ventilation Engineer 3-Plan Haustechnik AG, Winterthur

Visualization Gigon/Guyer

Photos Model: Modellbau Zaborowsky GmbH, Zurich

Werkstadt Zürich Building X

Over the next few years, an important working location called ‘Werkstadt Zürich’ will emerge on the site of the SBB Werkstätten on Hohlstrasse next to the Duttweiler bridge. Here, historic industrial buildings that foster a sense of identity will be joined by new buildings and public uses in the outdoor spaces. With a target of 5 kg CO2-eq per m² (energy reference area), ambitious standards are being set for the construction of the new Building X in terms of sustainability.

The oblong, seven-storey volume with the northern cantilever is located on Hohlstrasse in a privileged urban location. As the first new development, Building X is intended to showcase the transformation of the site from the SBB Werkstätten into a ‘Werkstadt’ with urban production, creative business and a cultural scene. This is achieved through a mixture of diverse uses and a comprehensive utilisation of reuse materials, which relates to the history of the site and creates a specific aesthetic of sustainability.

The ground floor with commercial units aimed at the public and a freely accessible first floor, the so-called ‘Stadtgeschoss’ with a neighbourhood centre, crèche and library, form the base, which faces the neighbourhood on Hohlstrasse and the site on Hohlgasse. The 2nd to 5th floors contain two-storey commercial units with galleries, to be used according to the specific needs of the tenants. The building is topped off by a semi-public storey with a cafeteria, co-working areas and a small roof terrace.

Two entrances from Hohlstrasse lead to the two building cores, which provide vertical access. In addition, an external, single-flight staircase along the south façade takes visitors directly to the balcony of the ‘Stadtgeschoss’. The roof, which is angled out of the façade, highlights the public entry and at the same time offers both a pleasant ambience and protection. On the north side, the cantilever responds to the Hohlgasse within the site and forms a covered delivery zone. This side has an industrial character, whereas the outdoor area on Hohlstrasse conveys an inviting atmosphere with a variety of ground surfaces, seating and green areas.

Reclaimed rails, steel profiles, corrugated fibre cement panels, reused windows, stairs, gratings and railings characterise the elevations of the building. History and time are present everywhere in the weathering and wear marks of the materials. The strategy of patina is continued and the building is firmly anchored at the location of the former SBB Werkstätten. Building X makes a contribution to the iconographic potential of repurposed components, creating an architecture that uses resources consciously during construction and operation, with optimised CO2 emissions and low consumption of grey energy.

Location Zurich

Programme New commercial building:
Ground floor with storage and commercial space,
1st floor ‘Stadtgeschoss': public area, for example with library, crèche, neighbourhood centre, terrace
2nd floor - 5th floor: high-ceilinged commercial spaces with intermediate galleries according to tenant requirements,
6th floor: co-working space, canteen, small roof terrace

Competition Gesamtleistungswettbewerb
Team Gigon/Guyer and Leuthard Baumanagement
1st stage: June – October 2023
2nd stage: January – March 2024, 1st Prize

Planning/Construction 2024–2027

Gross Floor Area 7‘659 m2

Competition Organzier Schweizerische Bundesbahnen SBB AG
represented by SBB AG Immobilien

Team GG Mike Guyer, Stefan Thommen, Carlo Magnaguagno, Cléa Peretti, Celia Diederichsen (I), Matthias Eberle (I), Till Nüesch (I)

Total Contractor Leuthard Baumanagement AG, Merenschwand

Landscape Architecture Antón Landschaft GmbH, Zurich

Cost Planning/Scheduling Leuthard Baumanagement AG, Merenschwand

Structural Engineer WaltGalmarini AG, Zurich

Electrical Engineer R+B Engineering AG, Zurich

Building Services Engineer Komfonie Engineering AG, Zurich

Building Physics Engineer Gartenmann Engineering AG, Zurich

Fire Safety Gartenmann Engineering AG, Zurich

Acoustical Engineer Gartenmann Engineering AG, Zurich

Plumbing Komfonie Engineering AG, Zurich

Sprinkler Consultant Komfonie Engineering AG, Zurich

Facility Management Amberg Loglay AG, Zurich

Coordination Leuthard Baumanagement AG, Merenschwand

Sustainability Gartenmann Engineering AG, Zurich
Reuse: Zirkular GmbH, Basel and Adrian Kiesel Architect, Zurich

Other Consulting:
Schmidlin Holzbau AG, Steinen
Wetter Gruppe AG, Metallbau, Stetten

BIM Gigon/Guyer
Leuthard Baumanagement AG, Merenschwand

Visualization Zuend, Zurich

Extension Staudenbühl School Complex

Location Zurich-Seebach

Programme Extension and refurbishment of the listed school complex (built in the 1960s by architect Rolf Keller).
Addition of further outdoor play areas.
New buildings:
Kindergarten building for 3 kindergartens.
School building with classrooms for 9 primary and 19 secondary school classes, specialist rooms, library, rooms for school staff, multi-purpose room and canteen.
Triple gymnasium.
Photovoltaics on the roof and integrated into the façade.

Competition October – December 2023

Gross Floor Area 17‘585 m2

Competition Organzier Stadt Zürich

Team GG Carlo Magnaguagno, Dylan Kreuzer, Stefan Thommen, Monique Cruz Lopez (I), Till Nüesch (I)

Construction Management Drees & Sommer Schweiz AG, Zurich

Landscape Architecture Antón Landschaft GmbH, Zurich

Structural Engineer Basler & Hofmann AG, Zurich

Building Services Engineer 3-Plan AG, Winterthur

Fire Safety Gruner AG, Zurich

Sustainability Drees & Sommer Schweiz AG, Zurich

Visualization Indievisual AG, Zurich

Photos Model: Modellbau Zaborowsky GmbH, Zurich

Terraced Houses Zollikon

Location Zollikon

Programme Four three-storey terraced houses with garden areas for rent,
basement with naturally lighted studios,
carports with four parking spaces

Feasibility Study November 2023 – February 2024

Gross Floor Area 920 m2

Competition Organzier Private

Team GG Mike Guyer, Stefan Thommen, Emil Röck (I)

Construction Management Bauseits Partner AG, Zurich

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Cost Planning/Scheduling Bauseits Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Visualization ZUEND, Zurich

Residential Building in Männedorf

Location Männedorf

Programme Residential house with three apartments and underground parking

Feasibility Study June – September 2023

Gross Floor Area 1‘394m2

Competition Organzier private

Team GG Mike Guyer, Pieter Rabijns

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Cost Planning/Scheduling Bauseits Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

New building for the Zentrum für Gehör und Sprache Zürich

Location Zurich

Programme Residential and lunchtime group building for four residential and two lunchtime groups for children and young people with hearing and/or speech impairments
1st basement – ground floor: area for lunchtime groups and the kitchen for the entire complex,
1st floor – 4th floor: area for residential groups,
photovoltaic system on the roof,
new underground parking under the existing playground

Competition September – December 2023

Gross Floor Area 4‘459 m2

Competition Organzier Hochbauamt Kanton Zürich

Team GG Mike Guyer, Stefan Thommen, Michèle Favre, Pauline Golüke

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Structural Engineer WaltGalmarini AG, Zurich

Building Services Engineer 3-Plan AG, Winterthur

Building Physics Engineer Kuster & Partner AG, Zurich

Visualization OVI Images GmbH, Baden

Photos Model: Modellbau Zaborowsky GmbH, Zurich