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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringPlan-Les-OuatesPerrin Frères SA
Perrin Frères SA Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Perrin Frères SA is a construction group that provides main-contract and specialist services across civil engineering, asphalt paving, earthworks, building works, surface treatments and renovation/transformation for private, public and institutional clients.

AI-generated
Offering

Products & services

Industry:Civil Engineering
✓ Offered6
Civil engineering
Public works and civil engineering structures, road and rail construction, equipment and road works, various developments, excavations, pipelines and reinforced concrete.
Bituminous surfacings
Manufacture, sale, laying and recycling of bituminous surfacings, from a villa driveway to motorway surfacings, with low-temperature asphalt mix.
Earthworks
Open-pit bulk excavations, earthworks, drainage and pipeline work at the bottom of excavations, management of excavated materials, recovery and treatment of contaminations.
Building construction
Concrete, reinforced concrete and exposed concrete, formwork, slabs and walls, masonry, insulating brick, carbonation, cosmetic work on concrete, renovation and transformations.
Renovation / refurbishment
Transformation and renovation of buildings, asbestos, PCB and lead remediation, decontamination, demolition, deconstruction, sawing, coring and structural reinforcement.
Surface finish work
Finishing works on exposed concrete surfaces, cleaning, repair of gravel pockets, touch-up of formwork lines, anti-graffiti protection and re-finishing of colours.
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3.8/5

Perrin Frères SA

Trust & reputation

ranQ Trust Score of Perrin Frères SA: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of October 2026

Perrin Frères SA scores 44.3 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.54.224%
  • 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: 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%
Perrin Frères SA scores 80.4 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%
Perrin Frères SA scores 86.7 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).86.722%
Perrin Frères SA scores 63.4 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: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.26.74%
Qualifications+0.00

Perrin Frères SA reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 3.0 out of 5 stars from 2 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
3
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle32
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 1, 2026Media
Comment protéger les employés sur les chantiers en période de canicule? Interview de Sébastien Lemuet
rts.ch

Knowledge

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Location

Hier entsteht die Karte
Chemin de Trèfle-Blanc 14-16
1228 Plan-Les-Ouates

At a glance

Legal form
Branch
UID
CHE-398.031.296
Founded
2007 · 19 years
Last commercial register change
May 8, 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.
76.0
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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