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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichKummer GmbH
Kummer GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Kummer GmbH provides building services engineering and consultancy, including client representation, technical due diligence, project management, concept and SIA-compliant planning, as well as analyses and expert reports.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered7
Client advisory
Client advisory, technical due diligence, project management, concept planning, planning according to SIA service phases, analyses and expert assessments.
Technical due diligence
Technical due diligence, client advisory, project management, concept planning, planning according to SIA service phases, analyses and expert assessments.
Project management
Project management for construction and planning assignments, complemented by concept planning, planning according to SIA service phases, analyses and expert assessments.
Concept planning
Concept planning, planning according to SIA service phases, analyses and expert assessments within the scope of the joint requirements analysis with the client.
Planning according to SIA – service phases
Planning according to SIA service phases, supplemented by client advisory, project management, concept planning, analyses and expert assessments.
Analyses
Analyses, expert assessments and other task modules in collaboration with the client and tailored to the specific assignment.
Expert assessments
Expert assessments, analyses, client advisory, project management and planning according to SIA service phases for technical assignments.
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4.1/5

Kummer GmbH

Trust & reputation

ranQ Trust Score of Kummer GmbH: 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.

Kummer 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.
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%
Kummer 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%
Kummer GmbH scores 83.3 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).83.322%
Kummer GmbH scores 4.9 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 35.4.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kummer 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.

Knowledge

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Location

Mirabellenstrasse 7
8048 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-114.728.947
Founded
2009 · 17 years
Last commercial register change
September 5, 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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