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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceEtoyJA Construction SA
JA Construction SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of JA Construction SA encompasses the following areas: Construction, Demolition, Renovation, Masonry, Transformation, Reinforced Concrete, Exterior Fittings, and Excavation and Earthworks. The company thus offers a wide range of services in the construction and real estate development sector.

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Offering

Products & services

Industry:Building MaintenanceMasonry Work
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4.1/5

JA Construction SA

✓ Offered7
Construction projects
Construction of buildings and structures, with project management for a wide range of varied and complex projects.
Masonry work
Masonry work for new builds, conversions and renovations, including work in reinforced concrete.
Renovations and conversions
Renovations and conversions of buildings, with adaptation of existing structures and associated work.
Demolition work
Demolition of buildings and structures as part of construction or conversion projects.
Reinforced concrete
Reinforced concrete work for structural elements and construction works.
External works
External works linked to construction sites, including works for the surrounding area and finishing.
Excavation and earthworks
Excavation and earthworks to prepare construction sites, foundations and construction works.
Trust & reputation

ranQ Trust Score of JA Construction SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

JA Construction 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%
JA Construction SA scores 76.6 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.79.212%
  • 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%
JA Construction 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%
JA Construction SA scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

JA Construction SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

En Bellevue 14
1163 Etoy

At a glance

Legal form
Corporation
UID
CHE-393.001.595
Founded
2018 · 8 years
Last commercial register change
March 31, 2026
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%
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