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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsPenthalazRLJ Ingénieurs Conseils SA
RLJ Ingénieurs Conseils SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of rlj. ingénieurs conseils sa is to provide engineering services in the field of construction, particularly in the areas of: structural planning (wood-concrete-metal), Building Information Modeling (BIM), seismic engineering (earthquake safety), hydraulic networks (water and sewage systems), fire safety, building heightening, and urban planning. The company also offers specialized services such as the design of translucent photovoltaic roofs and the renovation of bridges.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered6
Civil engineering
Engineering mandates in the field of construction for major projects or smaller assignments, carried out mainly by the firm’s own employees.
Timber structures
Design and supervision of timber structure projects, illustrated by multiple references for buildings, sports halls and technical structures.
Load-bearing timber-concrete-metal structures
Structural studies of load-bearing systems combining timber, concrete and metal for buildings and construction works.
Numerical modelling and seismic engineering
Numerical modelling of structures and seismic engineering calculations for construction and rehabilitation projects.
Road development
Studies and implementation of road development measures, including road resurfacing and infrastructure interventions.
Hydraulic networks
Studies of hydraulic networks and potable water pipelines for infrastructure projects.
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4.2/5

RLJ Ingénieurs Conseils SA

Trust & reputation

ranQ Trust Score of RLJ Ingénieurs Conseils SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

RLJ Ingénieurs Conseils SA scores 66.6 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.71.224%
  • 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.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.70.08%
RLJ Ingénieurs Conseils SA scores 90.9 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.70.07%
RLJ Ingénieurs Conseils 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%
RLJ Ingénieurs Conseils SA scores 62.9 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 35.62.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

RLJ Ingénieurs Conseils SA reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 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
4.6
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.67
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin des Fourches 8
1305 Penthalaz

At a glance

Legal form
Corporation
UID
CHE-106.046.857
Founded
1989 · 37 years
Last commercial register change
November 4, 2024
Employees
11 to 20
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.85.03%
    • Full methodology

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