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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionVellaTanno AG, Bauunternehmung
TA
Verified· 2 sourcesTrust Score4.2/5

Tanno AG, Bauunternehmung

Summary

About the company

Management of a construction company, takeover and execution of all construction and civil engineering works, trade in building materials and equipment, participation in similar businesses, buying and selling of real estate.

Commercial register, canton of GR·As of November 11, 2021View on Zefix
Trust & reputation

ranQ Trust Score of Tanno AG, Bauunternehmung: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

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Data basis 92% · As of October 2026

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Tanno AG, Bauunternehmung scores 77.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.79.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.58.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Tanno AG, Bauunternehmung scores 85.5 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%
  • 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%
Tanno AG, Bauunternehmung scores 60.0 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).60.022%
Tanno AG, Bauunternehmung has no value in the Visibility area of the ranQ Trust Score because no data is available. The area carries 8% 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
  • Website authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tanno AG, Bauunternehmung reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 9 customer reviews. The data basis is 92%, 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. Full methodology

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.99
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Prada Sur Mulins 270
7144 Vella

At a glance

Legal form
Corporation
UID
CHE-101.856.139
Founded
1984 · 42 years
Last commercial register change
November 11, 2021
Employees
1 to 10

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