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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryRetail & CommerceAgricultural dealerLausanneColas Suisse DG SA
Colas Suisse DG SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Colas Suisse DG SA provides construction, maintenance and rehabilitation of transport infrastructure and related services, including asphalt/enrobé production, recycling and aggregates production, as well as engineering and technical services.

AI-generated
Offering

Products & services

Industry:Agricultural dealer
✓ Offered10
Road construction works and maintenance of transport infrastructure
Civil engineering, bituminous asphalt mixes, railway works and road maintenance; crack bridging, chip sealing, reinforcement of damaged structures, sound-absorbing surfacings.
Outdoor and urban developments
Architectural surfacings, pedestrian areas, public spaces, landscaping works, paving, paving slabs, street furniture and signage.
Utility networks and special works
Replacement and installation of pipelines, industrial services, district heating and cooling, network emergency services, directional drilling, trenchless works, drilling and concrete sawing.
Waterproofing and resin
Waterproofing of civil engineering structures, bridge joints, roofs and vegetalisation, retention basins and dams, joint-free floor coatings.
Deconstruction and asbestos abatement
Remediation and asbestos abatement with treatment of asbestos, PCB, lead and HBCD; demolition and recovery of materials.
Engineering, infrastructure management and construction management
BIM, structure assessments, infrastructure management, construction management and engineering and R&D services.
Quarries, aggregates and mineral materials
Crushed hard materials, railway ballast, concrete materials, crushed foundation gravels and other aggregates.
Recycling and material recovery
Recycling platform, material recovery, recycling of reclaimed asphalt aggregates and products from asphalt plants.
Products and innovations for road surfacings
Silent surfacings, soil stabilisation solutions, anti-crack reinforced coatings, coloured low-carbon surfacings, photovoltaic pavements and other technical products.
Tunnel washing
Tunnel washing with the Octopus and response after incidents.
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4.4/5

Colas Suisse DG SA

Trust & reputation

ranQ Trust Score of Colas Suisse DG SA: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of November 2026

Colas Suisse DG SA scores 73.2 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.68.124%
  • 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.73.510%
  • 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%
Colas Suisse DG SA scores 94.3 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.90.07%
Colas Suisse DG SA 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%
Colas Suisse DG SA scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Colas Suisse DG SA reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 17 customer reviews. The data basis is 96%, 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
4.4
of 5

Aggregated from 17 reviews across all connected sources

Sources
GGoogle4.417
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Route de Berne 20
1010 Lausanne
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.832.896
Founded
1997 · 29 years
Last commercial register change
August 25, 2026
Employees
51 to 100
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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