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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringPetit-LancyZS Ingénieurs Civils SA
ZS Ingénieurs Civils SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

ZS Ingénieurs Civils SA is a civil engineering firm that provides design and execution services for civil engineering projects. Its scope includes structural design and civil works as well as infrastructure projects such as roads, tram and rail lines, energy and distribution networks, sewage systems, river renaturation, renovations and project management.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered6
Civil engineering
Road and motorway construction, railway engineering, development of public spaces, sewerage networks, water management, transport and distribution infrastructures.
Structural work
New-build, conversions and renovation of administrative, industrial, public, commercial and residential buildings; load-bearing structure, earthworks, special works and seismic assessments.
Art structures
Bridges, viaducts, tunnels, trenches and footbridges, with complete or partial treatment of structures within civil engineering.
River renaturation
Renaturation of waterways, biological corridors, urban requalifications and compensatory measures.
Overall construction management
Overall construction management for civil and structural engineering projects, coordinating specialist professionals and supervising the process from design to delivery.
Project management and steering
Project management and steering for civil engineering infrastructures, buildings and works.
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4.1/5

ZS Ingénieurs Civils SA

Trust & reputation

ranQ Trust Score of ZS Ingénieurs Civils SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

ZS Ingénieurs Civils SA scores 63.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.69.624%
  • 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.35.310%
  • 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.78.08%
ZS Ingénieurs Civils SA scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.82.07%
ZS Ingénieurs Civils SA scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
ZS Ingénieurs Civils SA scores 34.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ZS Ingénieurs Civils SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 3 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
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Route de Chancy 59 A
1213 Petit-Lancy
Opening hours
Mon
08:30 - 16:30
Tue
08:30 - 16:30
Wed
08:30 - 16:30
Thu
08:30 - 16:30
Fri
08:30 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.843.503
Founded
1989 · 37 years
Last commercial register change
October 15, 2024
Employees
21 to 50
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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