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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsPetit-Lancy 1Karakas et Français SA
Karakas et Français SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Karakas et Français SA is an engineering firm for soil and geotechnical works providing site investigation, design and consulting services. It operates in geotechnics, geostructures, geology, environmental studies and testing/measurements, offering services such as geothermal studies, hydrogeology, numerical modelling, building pollutant assessments, contaminated-site work and environmental monitoring during construction.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered5
Geotechnics
Analysis of soil specifics and technical recommendations for geotechnical structures, with subsoil studies and dimensioning of foundation solutions.
Geostructures
Design of geostructures and dimensioning of structures, with optimisation of structural solutions in interaction with the ground.
Geology
Subsoil studies to harness its potential or protect against its risks, with geological analyses applied to projects.
Environment
Environmental support for projects, to ensure their durability from an environmental and usage perspective.
Tests and Measurements
Tests and measurements on subsoils to understand their intrinsic characteristics and develop a coherent project.
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4.2/5

Karakas et Français SA

Trust & reputation

ranQ Trust Score of Karakas et Français SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Karakas et Français SA scores 73.6 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.77.424%
  • 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.52.910%
  • 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.88.08%
Karakas et Français 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%
Karakas et Français 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%
Karakas et Français SA scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Karakas et Français SA reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 7 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
4.9
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.97
★TrustpilotSoon
PProvenExpertSoon

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

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Location

chemin des Poteaux 10
1213 Petit-Lancy 1
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-359.059.581
Founded
2003 · 23 years
Last commercial register change
January 7, 2019
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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