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

About the company

The core activity of Greub AG is construction, particularly the planning and execution of new buildings, conversions and environmental works, as well as the renovation of residential and commercial buildings. This also includes specialized services such as core drilling and pressure testing.

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Products & services

Industry:Building ConstructionBuilding Maintenance
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Greub AG

Civil Engineering
Site Preparation
✓ Offered6
Building and civil engineering
Building construction for new builds, conversions and extensions, renovations; civil engineering works for property connections, small excavations and earthworks, and leak tests of wastewater pipes.
Site and garden works
Site works around buildings, including garden work for outdoor facilities and shaping the surroundings.
Core drilling
Professional core drilling up to a diameter of 20 cm, also as part of construction and property connection works.
Demolition works
Demolition works as part of new builds, conversions and smaller construction projects.
Planning, structural engineering and site management
Planning, structural calculations and site management for smaller projects, as well as quotation preparation and estimating.
Rental of party and event equipment
Rental of a large grill, large pizza oven, party tent and banquet seating sets, including delivery and setup at the tent.
Trust & reputation

ranQ Trust Score of Greub AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Greub AG scores 71.1 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.74.424%
  • 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.49.510%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Greub AG scores 89.3 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.70.07%
Greub 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%
Greub AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Greub AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 6 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle4.86
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Herznacherstrasse 6
5079 Zeihen

At a glance

Legal form
Corporation
UID
CHE-107.121.243
Founded
1969 · 57 years
Last commercial register change
December 13, 2024
Employees
11 to 20
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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