Constellation MEP-PAV-Étoile




City of Geneva, DU / OU / DMO PAV, Municipality of Carouge, Geneva, Lancy, Association Etoile


Geneva, Switzerland


Business, Housing, Public Amenities


400.000 sqm


Riken Yamamoto & Field Shop, Yokohama and Hosoya Schaefer Architects AG, Zürich


Competition with pre-qualification

Landscape architect:

Topotek1, Berlin

Traffic planning:

IBV Hüsler AG, Zürich


Pöyry, Zürich, Vevey


Space Syntax, London

Strategy, Finance:

Mountainworks, Amsterdam; Gratry Development, Geneva

Master Plan Competition

Cities are a collective achievement. The project Étoile specifically requires a patient and organic process over many years with multiple stakeholders. It needs a combination of top-down definitions and flexibility for bottom-up initiatives.

Hosoya Schaefer proposed a constellation of disciplines for an integrated planning approach. These included open spaces for a rich and livable environment, built volumes for a clear identity on a large scale, and a well sculpted urban fabric on a small scale. Zoning rules allow for accessibility and for flexibility in negotiating with public and private interests.

The entire site is programmed as mixed-use. Ground floor uses such as commerce and public functions form a base. Housing defines the outline of the urban blocks with access to green areas, while office space is located in the landmark towers and throughout the lots.

The masterplan is a flexible and adaptable instrument, incorporating from the start ideas for process, phasing, events, and communication. Its aim is to combine the urban with the human scale.



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Parking garage with shop in Zug, Switzerland
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Riedmatt Ebikon
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Seegarten Altendorf
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House Chile
Innovative single family home in forrest setting
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Buchs Areal Fegeren
Building for precision-industry
Current state: study

Urban Design

Technologycluster Zug
Urban framework plan and design concept

Masterplan Industriestrasse Nord, Zug, Switzerland

Hafencity Elbbrückenquartier, Hamburg
Masterplan and urban framework plan

Wilhelmsburg Elbinselquartier, Hamburg
Masterplan, urban framework plan and typology studies

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Development studies

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Urban framework plan

Wil West, Kanton Thurgau, Switzerland
Urban design concept

Urban design concept for a site in Uzwil, Switzerland

Urban design concept for a site in Kanton Schwyz, Switzerland

Urban design concept with public participation for Neugasse Zürich

Masterplan Dierikon, Switzerland

Urban System Research

Mobiglobe Autostadt Wolfsburg, Volkswagen, Germany
Mobility research

Strelka Institute, Moscow
Teaching: Advanced Urban Design

Development strategy for 3 communities in the Kanton St. Gallen, Switzerland


Zürich office

Flüelastrasse 10 8048 Zürich Switzerland (Google Maps)
T. +41 (0)43 243 6313 F. +41 (0)43 243 6315

Kyoto office

Jimukinoueda bldg. 602 21 Sakaimachi Gojo-Takakurakado Shimogyoku Kyoto Japan
T. +81 (0)75 744 1503