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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction managerOttikon B. KemptthalWilli Frei Bau GmbH
Willi Frei Bau GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Willi Frei Bau GmbH is a construction company specialising in alterations, renovations and refurbishment. Its services include bathroom and kitchen projects, masonry, tiling and plastering, core drilling, and smaller civil engineering and new-build projects.

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Service area

Offering

Products & services

Industry:Construction manager
✓ Offered5
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4.1/5

Willi Frei Bau GmbH

Conversions
Conversions, bathroom renovations, kitchen conversions, tiling work, façade renovation, core drilling and plastering work for conversions and renovations.
Renovations and refurbishments
Renovations and refurbishments, in particular bathroom renovations, kitchen refurbishments, façade renovation and external thermal insulation.
Small new-builds
Small new-builds on request, including smaller agricultural buildings such as stables and barns.
Civil engineering and utility installation
Small civil engineering and utility installation as part of the construction offer, on request also in connection with conversions and new-builds.
Demolition work
Smaller demolition work as part of conversions, renovations and smaller construction projects.
Trust & reputation

ranQ Trust Score of Willi Frei Bau GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Willi Frei Bau 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%
Willi Frei Bau 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%
Willi Frei Bau 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%
Willi Frei Bau GmbH scores 12.3 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 35.12.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Willi Frei Bau 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 54%, so the score is backed by part of the criteria. As of November 2026.

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

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Location

Luckhausen 1
8307 Ottikon B. Kemptthal

At a glance

Legal form
Limited Liability Company
UID
CHE-105.035.851
Founded
1999 · 27 years
Last commercial register change
November 5, 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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Active in 1 of 26 cantons · 1 municipality

    • ZHIllnau-Effretikon

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