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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsLa MagneGuillet Constructions Générales SA
Guillet Constructions Générales SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Guillet Constructions Générales SA is a construction company acting as a general contractor and total contractor, managing projects from design coordination through to handover. Services include project management, preliminary cost estimates, tender preparation, construction supervision and warranty follow‑up for residential buildings, schools, sports facilities, transformations, fire stations and industrial halls.

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Offering

Products & services

Industry:General Contractors
✓ Offered4
General and total contracting
Projects in general contracting and total contracting, from design with the architect through financial monitoring, site management and handover of the building.
Construction of public buildings
Construction and completion of public buildings, in particular schools, fire stations, sports centres, gymnasiums and community halls.
Construction of apartment buildings and villas
Construction of rental apartment buildings, PPE, grouped housing, villas and chalets, with underground parking depending on the projects.
Conversions, extensions and renovations
Conversion, extension and renovation of buildings, including remediation and adaptation of existing premises.
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4.1/5

Guillet Constructions Générales SA

Trust & reputation

ranQ Trust Score of Guillet Constructions Générales SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Guillet Constructions Générales 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.
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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%
Guillet Constructions Générales SA scores 87.0 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.83.012%
  • 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.90.07%
Guillet Constructions Générales SA scores 83.3 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).83.322%
Guillet Constructions Générales SA scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Guillet Constructions Générales 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

Route de la Magne 5
1687 La Magne

At a glance

Legal form
Corporation
UID
CHE-185.573.084
Founded
2017 · 9 years
Last commercial register change
January 29, 2026
Employees
51 to 100
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.100.06%
  • 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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