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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPainting & PlasteringWillisauGMS Willisau AG
GMS Willisau AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of GMS Willisau AG is the execution of plastering work, dry construction and sound insulation in the interior and exterior areas, including facades, plastering and exterior insulation.

AI-generated
Offering

Products & services

Industry:Painting & Plastering
✓ Offered7
Plastering work
Plastering work for interior and exterior areas for new builds, conversions and renovations, including walls, ceilings and facades.
Facade renovation
Facade renovations for value-preserving repairs of building envelopes, also with quality products and consulting during implementation.
Facade insulation
Facade insulation and exterior wall insulation for buildings, also in connection with renovations and energy-saving measures.
Ventilated facades
Ventilated facades for new builds and conversions, as part of the facade works and building envelope.
Drywall / light construction
Drywall and light construction work for interior fit-out, conversions and functional room solutions.
Acoustic ceilings
Acoustic ceilings for interior fit-out, also as suspended ceiling structures.
Suspended ceilings
Suspended ceilings for interior rooms, complementing the range in the drywall and acoustic ceiling sector.
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4.1/5

GMS Willisau AG

Trust & reputation

ranQ Trust Score of GMS Willisau 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.

GMS Willisau 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%
GMS Willisau 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%
GMS Willisau 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%
GMS Willisau AG scores 4.6 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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GMS Willisau 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

Rossgassmoos
6130 Willisau

At a glance

Legal form
Corporation
UID
CHE-106.083.108
Founded
1991 · 35 years
Last commercial register change
February 25, 2026
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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