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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichHosoya Schaefer Architects AG
Hosoya Schaefer Architects AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Hosoya Schaefer Architects AG is a studio for architectural design, strategies and research. The practice undertakes building design and realization, urban design, media installations, strategic planning and consulting.

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Products & services

Industry:Architecture Firms
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4.1/5

Hosoya Schaefer Architects AG

✓ Offered6
Architecture
Architecture for residential buildings, conversions and new builds; planning and execution of apartments, houses, school buildings and office buildings.
Urban planning
Urban planning for districts, site developments and public spaces; designs and concepts for station areas, neighbourhoods and mixed-use developments.
Research on urban systems
Research on urban systems, urban development and spatial strategies; studies, concepts and publications on productive cities and urban transformation processes.
Strategic planning
Strategic planning for site developments and urban transformation processes; concepts, master plans and development strategies for complex sites.
Advisory
Advisory on building, city and planning issues; support for strategic, spatial and project-related decisions.
Media installations
Media installations and spatial communication projects; work on visual, interactive and architectural installations in public and private contexts.
Trust & reputation

ranQ Trust Score of Hosoya Schaefer Architects AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Hosoya Schaefer Architects AG scores 59.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.73.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.35.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
Hosoya Schaefer Architects AG scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Hosoya Schaefer Architects AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Hosoya Schaefer Architects AG scores 61.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.23.34%
Qualifications+0.00

Hosoya Schaefer Architects AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

June 30, 2026Media
Biennale Countdown 6: Hosoya Schaefer
hochparterre.ch
May 17, 2026Media
Wohnüberbauung Winkelstrasse Hosoya Schaefer Architects
swiss-architects.com
March 30, 2026Media
MEWA-Areal Wädenswil Hosoya Schaefer Architects
swiss-architects.com
September 27, 2018Media
Ab durch die Mitte Studienauftrag Entwicklung Regionalflughafen Samedan
espazium.ch

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Location

Flüelastrasse 10
8048 Zurich
Opening hours
Mon
09:00 - 12:00, 13:00 - 17:30
Tue
09:00 - 12:00, 13:00 - 17:30
Wed
09:00 - 12:00, 13:00 - 17:30
Thu
09:00 - 12:00, 13:00 - 17:30
Fri
09:00 - 00:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.110.606
Founded
2008 · 18 years
Last commercial register change
February 17, 2017
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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