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

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.



Station square and station roof in Herisau, Switzerland
Current phase: construction documents

Benninger Areal, housing and retail development
Current phase: preliminary design

Interior design for an apartment in Park Tower, Zug
Recently completed

Mobility Hub / parking facility with retail component, Zug
Current phase: preliminary design

Parking garage with shop in Zug, Switzerland
Current phase: preliminary design

Riedmatt Ebikon / housing, retail, ateliers
Current phase: framework plan

Qube Ebikon / housing, retail, offices
Current phase: framework plan

House Chile, innovative single family home in forrest setting
Current phase: building permit documents

Buchs Areal Fegeren, building for precision-industry
Current phase: study

House Kyoto, community living, Japan
Current phase: study

Lachen SZ Alpenblickstrasse / high-rise housing
Current phase: study

Urban Design

Bahnstadt Nürtingen, Nürtingen
Current state: masterplan and function plan

Neugasse Zürich, urban design concept with public participation
Current state: presentation of urban design concept

Dessauer Strasse, Wolfsburg
Current state: competition waiting for further commission

Herisau site development, Herisau
Current state: process support and test planning

Technologiecluster Zug Masterplan, Zug
Current state: urban framework plan and design concept

Masterplan Dierikon, Switzerland
Current state: masterplan waiting for further commission

HafenCity Elbbrückenquartier, Hamburg
Current state: masterplan and framework plan

Wilhelmsburg Elbinselquartier, Hamburg
Current state: masterplan, function plan and typology studies

National Innovation Park Switzerland, Hub Zurich
Current state: Study on mobility-infrastructure

Leica Areal
Current state: study completed, next phase in planning

Innovation- and production park Patton Barracks, Heidelberg
Current state: urban framework plan

Wil West, Kanton Thurgau
Current state: urban framework plan

Visp Sägematte, Valais
Current state: study

Urban framework plan for the city of Zug
Current state: recently completed

Urban System Research

SmartUse / Space, Growth and BigData
Current state: ongoing

Winterthur 2040
Current state: ongoing

Harvard University Graduate School of Design / The Industrious City
Current state: in preparation

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