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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceWinterthurZehnder Holz + Bau AG, Winterthur
Zehnder Holz + Bau AG, Winterthur Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Zehnder Holz und Bau AG is timber construction and related services, including timber element construction, façade construction, carpentry, renovations, joinery, interior finishing, doors, furniture and cabinets, kitchens and stairs. The company also offers planning services such as timber construction planning and general planning.

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Products & services

Industry:Building MaintenanceInterior Construction
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Zehnder Holz + Bau AG, Winterthur

Timber Construction & Carpentry
✓ Offered5
Timber construction
Timber construction with timber element construction, post-and-beam framing in wood and glass, facade construction and carpentry works for new-builds and building projects.
Conversion and renovation
Conversion and renovation with additions, extensions, conversions, maintenance and repairs as well as energy-efficient refurbishments in existing buildings.
Interior fit-out and cabinetmaking
Interior fit-out and cabinetmaking for doors, furniture and cupboards, kitchens, and wooden staircases.
Timber construction planning
Timber construction planning for small and large timber construction projects, early project integration and planning for timber construction.
Overall project planning
Overall project planning for timber construction projects as a total service provider, from early involvement to project development.
Trust & reputation

ranQ Trust Score of Zehnder Holz + Bau AG, Winterthur: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Zehnder Holz + Bau AG, Winterthur scores 73.3 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.74.424%
  • 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.73.510%
  • 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.70.08%
Zehnder Holz + Bau AG, Winterthur 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%
Zehnder Holz + Bau AG, Winterthur scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Zehnder Holz + Bau AG, Winterthur scores 48.6 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 35.48.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zehnder Holz + Bau AG, Winterthur reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 17 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
4.6
of 5

Aggregated from 17 reviews across all connected sources

Sources
GGoogle4.617
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Rümikerstrasse 42
8409 Winterthur
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.165.594
Founded
1963 · 63 years
Last commercial register change
July 20, 2026
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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