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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionWinterthurBWT Bau AG
BWT Bau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

BWT Bau AG is a construction company carrying out new-build, renovation and refurbishment projects and providing services such as concrete repair, concrete drilling/cutting and hazardous-material remediation. The company also delivers timber element construction and small-scale building works.

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Products & services

Industry:Building Construction
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BWT Bau AG

✓ Offered4
Alteration | Renovation
Alteration and renovation work, extensions and repairs; consistent execution of construction projects, from consultation to implementation.
New Build
New builds in various scales; execution of construction projects with concrete and masonry work, as well as turnkey overall execution from a single source.
Hazardous Material Remediation
Asbestos remediation, PCB remediation, PAH remediation and other hazardous material remediation; analysis, remediation concept, safety zones and professional implementation.
Concrete Drilling + Milling
Core drilling, concrete cutting, wire sawing, circular wire sawing, concrete pressing and concrete bursting for openings, penetrations and demolition work.
Trust & reputation

ranQ Trust Score of BWT Bau AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

BWT Bau 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.
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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%
BWT Bau AG scores 99.0 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.96.07%
BWT Bau AG scores 85.0 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).85.022%
BWT Bau AG scores 35.7 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 35.71.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

BWT Bau 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 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

December 12, 2024Media
Die BWT Bau AG ist nachhaltig unterwegs
winterthurer-zeitung.ch

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Location

Wülflingerstrasse 285
8408 Winterthur

At a glance

Legal form
Corporation
UID
CHE-105.836.325
Founded
1966 · 60 years
Last commercial register change
July 8, 2026
Employees
101 to 500
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.100.03%
    • Full methodology

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