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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichWolfgang Rossbauer Architekt ETH/SIA GmbH
Wolfgang Rossbauer Architekt ETH/SIA GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Wolfgang Rossbauer Architekt ETH/SIA GmbH is an architectural firm that provides design, planning and project management services for educational, public and residential buildings.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered4
Architectural services
Architecture for schools, housing and community buildings, new builds, conversions and refurbishments; design, planning and competition solutions for specific building tasks.
Competition design
Competitions for schools, housing, kindergartens and special buildings; prequalified, invited and open competition projects with studies, design work and rankings.
Construction execution and project management
Construction execution of projects in Switzerland, Germany and Tanzania; collaboration with partner practices and engineers, plus delivery of competition-winning projects.
Architecture teaching and lectures
Teaching, design studios, project classes, thesis supervision, guest critiques and lectures at universities in Switzerland, Germany and internationally.
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4.1/5

Wolfgang Rossbauer Architekt ETH/SIA GmbH

Trust & reputation

ranQ Trust Score of Wolfgang Rossbauer Architekt ETH/SIA GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

Wolfgang Rossbauer Architekt ETH/SIA GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Wolfgang Rossbauer Architekt ETH/SIA GmbH scores 83.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Wolfgang Rossbauer Architekt ETH/SIA GmbH 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%
Wolfgang Rossbauer Architekt ETH/SIA GmbH scores 36.0 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 35.48.64%
  • 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

Wolfgang Rossbauer Architekt ETH/SIA GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, so the score is backed by part of the criteria. As of October 2026.

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

Press

Media

June 4, 2026Media
Bewegte Schule
hochparterre.ch

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Location

Erismannstrasse 54
8004 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-115.119.194
Founded
2009 · 17 years
Last commercial register change
October 19, 2020
Employees
1 to 10
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.88.06%
  • 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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