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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringFontannen B. WolhusenA. Duss AG, Tiefbau und Belagsunternehmung
A. Duss AG, Tiefbau und Belagsunternehmung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

A. Duss AG, Tiefbau und Belagsunternehmung performs civil engineering, road construction and surfacing works and provides renovation services. Its activities include surfacing and kerb works, site development, earthworks, utility lines and sewers, paving with natural or concrete stones, drainage and bank protection.

AI-generated
Offering

Products & services

Industry:Civil Engineering
✓ Offered3
Civil Engineering
General earthworks, utility lines, sewer systems, house connections, leachate lines, drainage, excavation work, stream bank protection and drainage systems.
Road Construction
Surfacing works, kerb edging, site development, road refurbishments, land shaping, backfilling, forecourts, parking lots, as well as paving with natural or concrete stones.
Renovations and Repairs
Renovation of existing structures, rectification of pavement damage and settlement, grouting of cracks and joints, replacement of manhole covers, paving, broken pipes and storm damage.
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4.1/5

A. Duss AG, Tiefbau und Belagsunternehmung

Trust & reputation

ranQ Trust Score of A. Duss AG, Tiefbau und Belagsunternehmung: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

A. Duss AG, Tiefbau und Belagsunternehmung scores 70.1 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.76.124%
  • 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.70.08%
A. Duss AG, Tiefbau und Belagsunternehmung 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%
A. Duss AG, Tiefbau und Belagsunternehmung 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%
A. Duss AG, Tiefbau und Belagsunternehmung scores 7.1 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 35.7.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A. Duss AG, Tiefbau und Belagsunternehmung reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 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
4.8
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.88
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Killacher
6110 Fontannen B. Wolhusen
Opening hours
Mon
08:00 - 17:30
Tue
08:00 - 17:30
Wed
08:00 - 17:30
Thu
08:00 - 17:30
Fri
08:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.104.879
Founded
1992 · 34 years
Last commercial register change
December 17, 2024
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.100.06%
  • 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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