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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPainterOberwil BlH. Grummel GmbH
H. Grummel GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

H. Grummel GmbH is a painting business carrying out interior and exterior painting, wallpapering and facade work. Its services also include alterations, renovations, minor plastering work and floor coverings.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Painter
✓ Offered6
Painting Work
All interior and exterior painting work, including façade work, renovations and minor plastering work.
Wallpapering
Wallpapering for interiors as part of new builds and conversions as well as renovations.
Conversions and Renovations
Conversions and renovations of residential and commercial premises, combined with painting, façade and plastering work.
Façade Work
Work on façades in connection with painting, renovations and refurbishments.
Plastering Work
Minor plastering work as a supplement to painting, conversion and renovation jobs.
Floor Coverings
Installation of floor coverings such as carpet flooring, Novilon and laminate.
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4.1/5

H. Grummel GmbH

Trust & reputation

ranQ Trust Score of H. Grummel GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

H. Grummel 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.
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%
H. Grummel GmbH scores 83.0 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.55.07%
H. Grummel GmbH 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%
H. Grummel GmbH scores 3.7 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 35.3.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

H. Grummel 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

Hohlegasse 38
4104 Oberwil Bl

At a glance

Legal form
Limited Liability Company
UID
CHE-101.743.021
Founded
1998 · 28 years
Last commercial register change
March 2, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BLOberwil (BL)
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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