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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureOwner's RepresentativeWittnauOS Baukomponenten AG
OS Baukomponenten AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Schmutzbau is a construction company specializing in the demolition and disposal of buildings and structures.

AI-generated
Offering

Products & services

Industry:Owner's Representative
✓ Offered4
Metal construction planning
Projecting, detailed engineering design, construction, consulting and expert reports; needs assessment, problem analysis, concept proposals, visualisations, building permit application, preliminary structural and building-physics dimensioning.
Agricultural farm buildings
Projecting and planning of remises, horse stables and stables for livestock; 3D planning, building submission, detailed planning, tenders and site supervision.
Passive solar energy
Planning, calculation and realisation of passive solar energy use for buildings and chalets; glazing, thermal insulation, thermal storage, summer heat protection and chalet renovation.
Rondogard patio glazing system
Patio glazing system for winter gardens and roof loggias; usable in wind and rain, with intake and exhaust ventilation system and advice on your personal Rondograd.
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4.1/5

OS Baukomponenten AG

Trust & reputation

ranQ Trust Score of OS Baukomponenten AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

OS Baukomponenten AG 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.
x
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%
OS Baukomponenten 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%
OS Baukomponenten AG scores 83.3 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).83.322%
OS Baukomponenten AG scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

OS Baukomponenten AG 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 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

Hauptstrasse 27
5064 Wittnau

At a glance

Legal form
Corporation
UID
CHE-107.974.292
Founded
1983 · 43 years
Last commercial register change
May 29, 2013
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.
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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