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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionLumbreinCollenberg SA
Collenberg SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Collenberg SA is a regional construction company that provides general building work. Its services include structural construction, civil engineering, concrete drilling and cutting, and smaller customer-specific tasks.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered4
Building construction
Building construction for public and private projects in the Surselva region, delivered on schedule for structures above ground level.
Civil engineering
Civil engineering solutions for public and private clients in the Surselva region, covering a range of construction projects and site conditions.
Concrete drilling and milling
Precise concrete drilling and concrete milling according to customer requirements, provided as a separate service for different construction needs.
Small works
Small works for customers, supporting minor construction tasks and project-related work as needed.
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4.1/5

Collenberg SA

Trust & reputation

ranQ Trust Score of Collenberg SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Collenberg 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%
Collenberg SA scores 85.5 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.55.07%
Collenberg 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%
Collenberg SA scores 3.1 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 35.3.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Collenberg 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

Caplutta 8 A
7148 Lumbrein

At a glance

Legal form
Corporation
UID
CHE-109.486.715
Founded
2004 · 22 years
Last commercial register change
July 9, 2010
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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