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

About the company

Gianini & Colombo SA is a construction company that carries out building, renovation and restoration works in structural and civil engineering. The company also provides maintenance services, paving works, turnkey solutions and technical office services.

AI-generated
Offering

Products & services

Industry:Building Maintenance
✓ Offered7
Construction works
General contractor and construction company for projects, design and construction of buildings and works.
Renovations
Renovation of buildings and spaces, with conversion and refurbishment measures listed in the services section.
Building refurbishment
Building refurbishments for restoring and fitting-out existing structures, listed among the main services.
Maintenance
Maintenance of buildings and structures, with conservation and upkeep measures for the built environment.
Flooring
Installation of flooring for construction sites, buildings and exterior or interior surfaces.
Turnkey projects
Realisation of turnkey projects, with full coordination of construction phases.
Technical office
Technical support for design, study and preparation of construction and renovation works.
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4.1/5

Gianini & Colombo SA

Trust & reputation

ranQ Trust Score of Gianini & Colombo 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.

Gianini & Colombo 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%
Gianini & Colombo SA scores 87.1 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.55.07%
Gianini & Colombo 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%
Gianini & Colombo SA scores 7.7 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 35.7.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gianini & Colombo 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

Via Emilio Bossi 26
6830 Chiasso

At a glance

Legal form
Corporation
UID
CHE-106.009.282
Founded
1978 · 48 years
Last commercial register change
November 8, 2024
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.85.03%
    • Full methodology

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