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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceReinach BlKiefer Tiefbau GmbH
Kiefer Tiefbau GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Kiefer Tiefbau GmbH is a civil engineering contractor performing demolition, excavation and site/landscaping works. Services include interior strip-out and hazardous-material remediation in cooperation with a Suva-accredited partner, systematic sorting and disposal of construction waste, GPS-guided excavation and earthworks, and measures for excavation support.

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Products & services

Industry:Building MaintenanceCivil Engineering
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4.1/5

Kiefer Tiefbau GmbH

Site Preparation
✓ Offered3
Demolition
Demolition and dismantling work for residential, commercial and industrial buildings, including prior gutting, hazardous substance remediation in cooperation with specialist firms, and disposal and recycling of construction waste.
Excavation
Excavation of building pits with GPS-supported execution, special deep foundation works such as pit shoring with sheet-pile walls or concrete struts, as well as delivery of materials, installation and civil engineering works for utility lines and surfacing.
External works
External works around a private home and a commercial property, including planting, landscaping, laying walkway slabs or paving stones, and construction of retaining walls made of natural stone or angle blocks.
Trust & reputation

ranQ Trust Score of Kiefer Tiefbau GmbH: 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.

Kiefer Tiefbau GmbH 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%
Kiefer Tiefbau GmbH scores 82.0 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.97.712%
  • 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%
Kiefer Tiefbau GmbH 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%
Kiefer Tiefbau GmbH scores 4.6 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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kiefer Tiefbau GmbH 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

Duggingerstrasse 23
4153 Reinach Bl

At a glance

Legal form
Limited Liability Company
UID
CHE-155.309.298
Founded
2012 · 14 years
Last commercial register change
July 16, 2026
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.
88.0
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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