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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsBirmenstorf AgG. Zehnder AG Generalunternehmung
G. Zehnder AG Generalunternehmung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

G. Zehnder AG Generalunternehmung provides scaffolding systems and general construction services. Offerings include façade, tower, suspended and industrial scaffolds, as well as construction works such as concrete and steel structures, external insulation, renovations, waterproofing and utilities/drainage works.

AI-generated
Offering

Products & services

Industry:General Contractors
✓ Offered2
Construction company
Concrete-steel structures, exterior insulation, concrete slabs, utility lines and sewer systems, site works, extensions and garages, shaft refurbishment, conversion and renovation, mason service for customers, concrete rehabilitation, facade renovation, waterproofing, paving, natural stone walls, building drying, kitchen and bathroom renovations.
Scaffolding
Facade scaffolds, tower scaffolds, helmet scaffolds, suspended scaffolds, scaffold towers, flat-roof guardrails, bridge scaffolds, industrial scaffolds, roofers’ scaffolds, painters’ scaffolds, sheet-metal workers’ scaffolds, protective tunnels, emergency roofs, support scaffolds, rolling scaffolds.
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4.5/5

G. Zehnder AG Generalunternehmung

Trust & reputation

ranQ Trust Score of G. Zehnder AG Generalunternehmung: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

G. Zehnder AG Generalunternehmung scores 84.3 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.79.924%
  • 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.86.510%
  • 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%
G. Zehnder AG Generalunternehmung scores 94.3 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.90.07%
G. Zehnder AG Generalunternehmung 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%
G. Zehnder AG Generalunternehmung scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

G. Zehnder AG Generalunternehmung reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 29 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
4.7
of 5

Aggregated from 29 reviews across all connected sources

Sources
GGoogle4.729
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Badenerstrasse 20
5413 Birmenstorf Ag
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 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.782.385
Founded
1968 · 58 years
Last commercial register change
June 10, 2022
Employees
51 to 100
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.100.06%
  • 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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