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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichSteiger Concept AG
Steiger Concept AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Steiger Concept AG is an architecture firm providing conceptual design and planning for new buildings, renovations and conversions. The practice delivers projects across healthcare and infrastructure (including airports and stations), residential and commercial sectors, and acts as a general planner using digital workflows such as BIM.

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Products & services

Industry:Architecture Firms
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4.2/5

Steiger Concept AG

Architectural planning
Architectural planning for residential, workplace and hospital projects as well as infrastructure projects; concepts, designs, digital planning and BIM-supported development.
General planning
General planning for complex construction projects, in particular in hospital and airport environments; coordination of planning processes and project-specific requirements.
Digital planning and BIM
Digital planning and BIM for architectural projects; digital architectural models, process optimisation and model-based project development.
Trust & reputation

ranQ Trust Score of Steiger Concept AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

Steiger Concept AG scores 66.1 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.73.324%
  • 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.45.610%
  • 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.70.08%
Steiger Concept 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%
Steiger Concept 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%
Steiger Concept AG scores 53.8 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 35.74.34%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.33.34%
Qualifications+0.00

Steiger Concept AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 5 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.85
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 1, 2026Media
Steiger Concept baut Spital in Biel
hochparterre.ch
May 24, 2026Media
Umbau Kirche & Neubau Mehrfamilienhaus | Kasinostrasse, Zürich Steiger Concept AG
swiss-architects.com
May 9, 2026Media
Kantonsspital St. Gallen | Neubau Logistikzentrum, Sterilisation & Apotheke Haus 24 Steiger Concept AG
swiss-architects.com
June 19, 2023Media
Neubau in Brügg: Siegerprojekt für neues Bieler Spital liegt vor
bernerzeitung.ch

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Location

Rüdigerstrasse 15
8045 Zurich
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-426.581.718
Founded
2011 · 15 years
Last commercial register change
July 1, 2026
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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