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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding services engineerOberentfeldenGrundauf AG
GA
Verified· 1 sourceTrust ScoreNo score yet

Grundauf AG

Summary

About the company

The company's purpose is to plan, execute and coordinate high-rise construction projects in Switzerland and abroad, with a special focus on building technology. This includes all services in the fields of electrical, heating, ventilation and sanitary technology, as well as the integration of modern building automation systems. In addition, the company develops, manufactures and distributes products in the field of building technology. The company can offer consulting services, acquire, manage, encumber and sell real estate and land, and conduct all business that is suitable to promote the company's purpose directly or indirectly. The company can establish branches and subsidiaries in Switzerland and abroad and participate in other companies.

Commercial register, canton of AG·As of December 4, 2024View on Zefix
Presence

Service area

Trust & reputation

ranQ Trust Score of Grundauf AG

Trust Score
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A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Website authority, Media authority

Data basis 50% · As of November 2026

Grundauf AG 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%
Grundauf AG scores 59.7 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.39.612%
  • 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%
Grundauf AG 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%
Grundauf AG 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.
x
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%

The data basis is 50%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Website authority, Media authority. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data. Full methodology

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Location

Fliederweg 8
5036 Oberentfelden

At a glance

Legal form
Corporation
UID
CHE-359.896.513
Founded
2024 · 2 years
Last commercial register change
December 4, 2024
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • AGOberentfelden
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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