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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionKollbrunnWerner Renggli, Bauunternehmen
Werner Renggli, Bauunternehmen Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Renggli Bauunternehmung includes the provision of construction services, particularly in the field of civil engineering and environmental protection, as well as consulting services. The company also offers specialized solutions such as the Renggli separation system for the separation of wastewater and rainwater.

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Products & services

Industry:Building ConstructionCivil Engineering
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4.1/5

Werner Renggli, Bauunternehmen

✓ Offered4
Building and Civil Engineering
All masonry work, custom work, alterations, concrete works, core drilling, retaining walls, plastering work, formwork work, reinforcement, excavation work, service lines and surfacing works.
Consulting
Consulting for construction projects, with alternatives for execution and costs, transparent cost breakdowns and a joint selection of the best option with the client.
Nature Conservation Work
Nature conservation work involving biotope creation, using stones, humus, clay, sand, concrete, wood, paving, boulders as well as water and green plants for habitats.
Closure System for Combined Shafts
Closure system for combined shafts in the construction environment, as a special service listed separately in the performance overview.
Trust & reputation

ranQ Trust Score of Werner Renggli, Bauunternehmen: 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.

Werner Renggli, Bauunternehmen 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%
Werner Renggli, Bauunternehmen scores 78.5 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%
Werner Renggli, Bauunternehmen scores 85.0 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).85.022%
Werner Renggli, Bauunternehmen scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Werner Renggli, Bauunternehmen 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

Seemerrüti 1
8483 Kollbrunn

At a glance

Legal form
Sole proprietorship
UID
CHE-106.556.087
Founded
1990 · 36 years
Last commercial register change
January 21, 2016
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.67.06%
  • 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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