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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionDietikonBühlmann AG
Bühlmann AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Bühlmann AG is timber construction, particularly the planning, implementation and renovation of timber construction projects, including the provision of services such as timber construction planning, statics, element construction, facades, photovoltaics, dormer windows, Velux roof windows, flooring, interior construction and renovation of old buildings/monument preservation.

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Products & services

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Bühlmann AG

✓ Offered9
Renovation / heritage conservation
Renovations and heritage conservation work, in particular for older buildings and existing structures.
Facades
Facade works for buildings, listed as a stand-alone construction service.
GU timber construction
General contractor services in timber construction for building projects and coordinated execution.
Element construction
Element construction for timber construction projects, listed as a standardized construction service with reference projects.
Flooring / interior fit-out
Flooring and interior fit-out for new-build and renovation projects.
Timber construction planning
Timber construction planning with structural engineering and BOQ preparation for timber construction projects.
Velux roof windows
Installation of Velux roof windows in existing or new roofs.
Dormers
Design and installation of dormers for roof extensions and conversions.
Photovoltaic systems
Photovoltaic systems in connection with building and roof projects.
Trust & reputation

ranQ Trust Score of Bühlmann AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Bühlmann AG scores 64.3 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.54.524%
  • 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.63.210%
  • 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%
Bühlmann 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%
Bühlmann AG 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%
Bühlmann AG scores 13.7 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 35.13.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bühlmann AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.9 out of 5 stars from 11 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
3.9
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle3.911
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Giessenstrasse 11B
8953 Dietikon
Opening hours
Mon
06:30 - 17:00
Tue
06:30 - 17:00
Wed
06:30 - 17:00
Thu
06:30 - 17:00
Fri
06:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.573.660
Founded
1990 · 36 years
Last commercial register change
July 29, 2025
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.
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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