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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber constructionVolketswilWinterberger Holzbau AG
Winterberger Holzbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Winterberger Holzbau AG carries out timber construction and carpentry work. Its services include planning and building roof structures, extensions and carports, as well as renovations, façade work, roof-window installation and other timber-related projects.

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Service area

Offering

Products & services

Industry:Timber construction
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Winterberger Holzbau AG

✓ Offered9
Timber structures
Roof structures for new single- and multi-family houses and halls, with consultation on conversions, renovations, storey additions, roof dormers, roof windows and carports.
Conversions
Conversions and renovations with structural and building-physics consultation, including roof truss, thermal insulation, ceiling cladding, windows, doors and floor coverings from a single source.
Additions, carports
Additions and freestanding timber structures such as patio covers, garden sheds, carports, privacy screens and entrance canopies.
Timber facades
Timber facades with external insulation for new builds and renovations, as well as facades with large-format panels such as Eternit Largo, Rockpanel and Eternit panels.
Roof windows and accessories
VELUX roof windows with accessories for heat protection, blackout, privacy and insect protection, plus consultation to improve living comfort.
Ceiling cladding
Ceilings made of wood panelling (Täfer), ceiling panels made from wood-based boards, Fermacell and plasterboard, as well as sound-insulating ceilings and fire-protection panelling (Brandschutztäfer).
Stairs
Planning and installation of wooden stairs with wooden treads, side stringers in wood or steel, and handrails in wood, steel and glass.
Terrace flooring
Wood floors and wooden decking gratings for terraces and gardens, made from FSC-certified timber.
Thermal insulation / sound insulation
Insulation and sound insulation using glass and rock wool, wood fibres, cellulose, and products made from hemp or sheep’s wool.
Trust & reputation

ranQ Trust Score of Winterberger Holzbau AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

Winterberger Holzbau AG scores 67.0 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.65.024%
  • 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.49.510%
  • 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%
Winterberger Holzbau 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%
Winterberger Holzbau 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%
Winterberger Holzbau AG 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

Winterberger Holzbau AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 6 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle4.36
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Im Winkel 2
8604 Volketswil
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.384.434
Founded
2001 · 25 years
Last commercial register change
May 26, 2020
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHVolketswil
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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