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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSite PreparationLuterbachTschanz Grabenlos AG
Tschanz Grabenlos AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Tschanz Grabenlos AG is a specialist contractor for the installation and replacement of pipelines, offering trenchless techniques and conventional civil engineering works. Services include horizontal directional drilling (HDD), guided pressing, pipe bursting (berstlining), steel‑pipe ramming/impact mole and road and site works for municipal and private clients.

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Products & services

Industry:Site Preparation
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4.0/5

Tschanz Grabenlos AG

Trenchless utility installation
Trenchless utility installation for pipe and conduit works, including renewals and crossings using HDD drilling, directional pipe jacking, pipe bursting and pipe ramming.
Horizontal directional drilling (HDD)
Horizontal directional drilling for laying lines without trenches, including pilot drilling, enlarging the borehole and a tension-free pull-in of the pipes.
Directional pipe jacking
Directional pipe jacking for drilling with a steerable head, including in curves, for targeted undercrossing of obstacles.
Pipe bursting
Pipe bursting for trenchless pipe renewal, in particular for water mains and other utility networks.
Steel pipe ramming / earth rocket
Steel pipe ramming and earth rocket for pneumatic drive of steel pipes and PE protective pipes between the launch and receiving pit.
Conventional civil engineering
Deep civil engineering and road construction works, including water mains, sewers, cable and pipe systems as well as repairs and network reinforcements.
External works
Design of forecourts and driveways with stone paving or surfacing.
Pipe burst repairs
Organisation of the repair of pipe bursts.
Trust & reputation

ranQ Trust Score of Tschanz Grabenlos AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Tschanz Grabenlos AG scores 59.6 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.69.424%
  • 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.55.910%
  • 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.35.08%
Tschanz Grabenlos 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%
Tschanz Grabenlos AG 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%
Tschanz Grabenlos 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

Tschanz Grabenlos AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 8 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
4.5
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.58
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Industriestrasse 6
4542 Luterbach

At a glance

Legal form
Corporation
UID
CHE-115.375.834
Founded
2010 · 16 years
Last commercial register change
September 17, 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.
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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