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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectWinterthurOES ARCHITEKTEN AG
OES ARCHITEKTEN AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

OES ARCHITEKTEN AG is an architectural firm that designs and oversees new construction, conversions and renovations. Its services include feasibility and site studies, competition preparation, client representation and project management, as well as property assessments and exhibition or pavilion design.

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Service area

Offering

Products & services

Industry:Architect
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3.8/5

OES ARCHITEKTEN AG

✓ Offered6
Architectural services
Planning and construction of new builds, conversions and extensions; renovation and renewal; projects for single-family houses, multi-family houses, public buildings and commercial constructions.
Planning for renovation and renewal
Renovation and renewal of buildings, planning and construction in a historical context, expert reports on the value of buildings for preservation, expert advice on protected properties and townscapes.
Studies and feasibility assessments
Potential analyses for sites and buildings, preliminary studies, development and feasibility studies, selection procedures as well as preparation and conduct of architectural competitions.
Construction advisory
Client representation, project management and project supervision for construction projects.
Real estate consulting and valuation
Real estate valuations, purchase advisory and assumption of sales mandates.
Cultural management and exhibition construction
Exhibition constructions, product design and presentations, and interdisciplinary projects in the field of cultural management.
Trust & reputation

ranQ Trust Score of OES ARCHITEKTEN AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of November 2026

OES ARCHITEKTEN AG scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
OES ARCHITEKTEN AG scores 85.5 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.55.07%
OES ARCHITEKTEN AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
OES ARCHITEKTEN AG scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

OES ARCHITEKTEN AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Heiligbergstrasse 2
8400 Winterthur

At a glance

Legal form
Corporation
UID
CHE-114.977.930
Founded
2009 · 17 years
Last commercial register change
November 5, 2025
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHWinterthur
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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