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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesCoaching & Personal DevelopmentWidnauStephan Bischof GmbH
Stephan Bischof GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Stephan Bischof GmbH consists of two main areas: 1. Coaching for executives in the construction industry: The company offers coaching programs to support executives in the construction industry in developing their leadership skills, communication skills, and handling difficult situations. 2. Consulting on indoor pollutant contamination: The company provides consulting services to support those affected in coping with challenges related to pollutants in indoor spaces, from initial consultation to control and acceptance.

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Offering

Products & services

Industry:Coaching & Personal Development
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3.9/5

Stephan Bischof GmbH

✓ Offered3
Indoor pollutant consulting
Advisory services for indoor pollutants for property owners-managers, planners, developers, construction companies and demolition contractors; initial consultation, identification, cost and risk assessment, concept development, site inspection and acceptance.
Executive coaching
1:1 coaching for executives in the construction industry; problem analysis, organizing day-to-day work life, communication, team coaching, stress management, sales trainings, proposal development, work-life balance and career planning.
Nano products & surface sealing
Technical consulting and application of protective solutions for surfaces directly on site; focus on surface sealing and protection in new build and renovation work.
Trust & reputation

ranQ Trust Score of Stephan Bischof GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 54% · As of October 2026

Stephan Bischof 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%
Stephan Bischof GmbH scores 65.0 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.58.012%
  • 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%
Stephan Bischof GmbH scores 85.0 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).85.022%
Stephan Bischof GmbH scores 4.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stephan Bischof GmbH reaches a ranQ Trust Score of 3.9 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 54%, 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.

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Location

Sonnenstrasse 8
9443 Widnau
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 20:00
Fri
07:00 - 17:00
Sat
07:00 - 17:00
Sun
07:00 - 17:00

At a glance

Legal form
Limited Liability Company
UID
CHE-400.401.097
Founded
2022 · 4 years
Last commercial register change
February 22, 2022
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.
88.0
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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