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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionWasterkingenKaiser Bau GmbH
Kaiser Bau GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the manufacture and construction of prefabricated basements, element basements, formwork basements and concrete floor slabs for commercial and private builders throughout Switzerland.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered4
Prefabricated basements
Individually planned prefabricated basements made of concrete, including planning, fabrication and installation throughout Switzerland; prefabricated wall elements, filigree ceilings and floor elements.
Building construction / New build
Building-contractor works in building construction for new builds, conversions and extensions; single-family and multi-family houses, hall buildings, foundations as well as construction for private and commercial clients.
Conversions & renovations
Conversion work such as cellar extensions, demolition work, masonry and concrete repairs as well as core drilling; from small adjustments to larger interventions in the existing building fabric.
Precast concrete element construction
Component construction with precast concrete elements for basements, halls and façades, including planning and expert installation; stairs and balconies are also mentioned.
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4.0/5

Kaiser Bau GmbH

Trust & reputation

ranQ Trust Score of Kaiser Bau GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Kaiser Bau GmbH scores 62.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
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.70.824%
  • 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.27.910%
  • 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.78.08%
Kaiser Bau GmbH scores 83.0 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.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%
Kaiser Bau GmbH 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%
Kaiser Bau GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kaiser Bau GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Unterdorfstrasse 216
8195 Wasterkingen

At a glance

Legal form
Limited Liability Company
UID
CHE-100.574.885
Founded
2000 · 26 years
Last commercial register change
April 25, 2024
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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