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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral contractorZunzgenGRIMMO Building GmbH
GRIMMO Building GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

GRIMMO Building GmbH is a general contractor specialising in renovations and conversions. Its services include project planning and management, as well as work on interior and exterior spaces.

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Presence

Service area

Offering

Products & services

Industry:General contractorRenovation
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3.9/5

GRIMMO Building GmbH

✓ Offered3
General contracting
Renovations and conversions with professional project management; planning, cost, quality and schedule guarantees for construction projects.
Interior design
Design of interior spaces, kitchens, staircases and bathrooms; planning and execution of interior fit-out and design projects.
Exterior transformation works
Outdoor areas, setup and reworking, including project-specific planning and execution of conversion and renovation works.
Trust & reputation

ranQ Trust Score of GRIMMO Building GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 88% · As of November 2026

GRIMMO Building GmbH scores 58.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
GRIMMO Building GmbH scores 74.1 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.79.212%
  • 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%
GRIMMO Building 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%
GRIMMO Building GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GRIMMO Building GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 88%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Holdenweg 23
4455 Zunzgen

At a glance

Legal form
Limited Liability Company
UID
CHE-419.995.339
Founded
2018 · 8 years
Last commercial register change
November 12, 2018
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BLZunzgen
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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