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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryZurichBaumann Koelliker AG
Baumann Koelliker AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Baumann Koelliker AG provides electrical and building-technology services, covering planning, installation and maintenance for residential, commercial and industrial projects. Services include electrical installations, building technology, fiber‑optic and cable construction, photovoltaics, e‑mobility and ZEV systems, control & security, and the Building Connect solution for connected building systems.

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Products & services

Industry:Electrical Industry
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Baumann Koelliker AG

10
Electrical installations
Electrical installations for new builds and conversions, installations in buildings as well as work in the field of electrical installation and customer relationships.
Building technology
Building technology with KNX and Loxone, visualisations, cloud connections and IT solutions for building automation.
Fibre-optics & cable construction
Fibre-optic and cable construction with splicing and measurements of fibre-optic links, duct systems, distribution manholes, as well as planning and documentation.
Service & maintenance
Service and maintenance work for electrical systems so that the systems run smoothly and remain looked after.
E-mobility
Planning and implementation of AC and DC charging stations for electric vehicles.
ZEV systems
Planning, execution and billing of ZEV systems to supply multi-family houses or office buildings with PV electricity.
Photovoltaics
Photovoltaic systems on the own roof for generating sustainable power.
Planning & consulting
Expert consulting as well as careful, on-time planning for electrical and building services solutions.
Inspection & safety
Checking work steps and safety aspects to ensure a high level of safety in the building.
Building Connect
Connection of building technology via an internet connection to use digital building functions.
Trust & reputation

ranQ Trust Score of Baumann Koelliker AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

Baumann Koelliker AG scores 82.7 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.73.124%
  • 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.95.710%
  • 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.95.08%
Baumann Koelliker AG scores 81.6 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.75.012%
  • 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.82.07%
Baumann Koelliker AG scores 86.7 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).86.722%
Baumann Koelliker AG scores 18.6 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 35.37.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Baumann Koelliker AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 42 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 42 reviews across all connected sources

Sources
GGoogle4.542
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

January 16, 2025Media
Baumann Koelliker Gruppe gewinnt Swiss Arbeitgeber Award 2025
20min.ch
March 16, 2021Media
«Es ist eben keine Übernahme, sondern ein Miteinander»
zo-online.ch
March 16, 2021Media
Hinwiler Elektro-Firma schliesst sich Branchenriesen an
zo-online.ch

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Location

Buckhauserstrasse 40
8048 Zurich
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-240.646.876
Founded
2019 · 7 years
Last commercial register change
September 17, 2026
Employees
21 to 50
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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