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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryReal EstateReal Estate Project DevelopmentEchandensBL4 SA
BL4 SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

BL4 SA is a company specialized in metal building works and the building envelope. Services include design, fabrication and installation of steel structures, staircases, ventilated and glazed façades, fire and industrial doors, industrial platforms, railings and mailboxes, along with technical studies, static calculations and site coordination.

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Products & services

Industry:Real Estate Project Development
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BL4 SA

✓ Offered8
Metal construction
Design, fabrication and installation of metal frames, load-bearing structures, made-to-measure work and complex structures for new-build or renovation projects.
Ventilated facades
Design and installation of ventilated facades with metal substructure, insulation, rain screen and external cladding for new buildings or energy renovations.
Technical glazing
Installation of technical glazing for façades, staircases, handrails and partitions, with laminated, tempered or insulating glass depending on project requirements.
Metal staircases
Fabrication and installation of straight, helical or suspended metal staircases for indoor and outdoor use, with steps, handrails and made-to-measure finishes.
Fire-rated and industrial doors
Installation of technical doors, industrial doors and certified fire-rated doors EI30, EI60 or EI90, with installation in accordance with safety standards.
Metal barriers and handrails
Made-to-measure fabrication of metal barriers, handrails, ramps and protective structures for multi-family housing, public buildings and industrial sites.
Industrial platforms
Design and installation of industrial platforms and metal mezzanines for storage, production and warehouses, with structural study, fabrication and installation.
Collective letter boxes
Supply and installation of collective letter boxes made of steel or aluminium, integrated into building façades or entry halls for residential and administrative buildings.
Trust & reputation

ranQ Trust Score of BL4 SA

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

BL4 SA has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
BL4 SA scores 53.4 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.25.012%
  • 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%
BL4 SA scores 83.3 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).83.322%
BL4 SA scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

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Location

Chemin de la Corniche 16 bis
1026 Echandens

At a glance

Legal form
Corporation
UID
CHE-260.280.198
Founded
2025 · 1 year
Last commercial register change
January 21, 2025
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.
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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