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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsEndingenKeller Generalunternehmung AG
Keller Generalunternehmung AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Keller Generalunternehmung AG is a construction firm providing building and civil engineering services and turnkey project delivery from planning through execution. Its offerings include new-builds and renovations for residential, commercial and public buildings, masonry and specialist works (façade renovation, insulation, core drilling), site and landscaping services, plus planning and consulting.

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Offering

Products & services

Industry:General Contractors
✓ Offered5
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Keller Generalunternehmung AG

New build and renovation
Building construction for single- and multi-family houses, residential developments, commercial buildings and public works, as well as small repairs, retaining walls and garden installations.
Customer mason
Bathroom and kitchen renovations, remediation of water damage and historical building fabric, as well as small repairs from a single source.
Special works
Façade renovations, thermal insulation, core drilling and paving and slab works.
Squares and surroundings
Design and execution of squares, surroundings and garden installations following consultation, carried out professionally and cost-effectively.
Planning and consulting
Project preparation, costing, scheduling, concept development and on-site support for construction projects.
Trust & reputation

ranQ Trust Score of Keller Generalunternehmung AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Keller Generalunternehmung 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.
x
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%
Keller Generalunternehmung AG scores 85.5 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%
Keller Generalunternehmung AG 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%
Keller Generalunternehmung AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller Generalunternehmung AG 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

Mühleweg 3
5304 Endingen
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.097.484
Founded
1991 · 35 years
Last commercial register change
February 4, 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.
100.0
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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