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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingRiehenAlfred Brönnimann AG Dachdeckergeschäft
Alfred Brönnimann AG Dachdeckergeschäft Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Alfred Brönnimann AG is the provision of services in the field of roofing and construction, particularly: roofing (flat and pitched roofs), insulation, facade construction, building envelope, solar systems, roof windows, crane and aerial lift rentals, sheet metal work, and timber construction. The company offers these services for new buildings, renovations, and repairs in the Basel region and surrounding areas.

AI-generated
Offering

Products & services

Industry:RoofingSheet Metal Work
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4.3/5

Alfred Brönnimann AG Dachdeckergeschäft

✓ Offered6
Roofing
Roofing for flat and pitched roofs, roof repairs and new coverings; installation of roof windows and solar systems, executed with clay tiles, shingles, natural slate or fibre-cement boards.
Sheet metal works
Sheet metal works for new roof installations, renovations and repairs; coordinated with roofing specialists for work around the roof.
Thermal insulation
Thermal insulation for construction projects, tailored to the respective property; calculation of the insulation thickness for Minergie standard or the building programme of both Basels.
Building envelope
Facade construction and building envelopes with large-format boards, wooden facades as well as sheet metal cladding and plastic panels.
Solar systems
Installation of photovoltaic systems and hot water heating in cooperation with electrical or heating contractors; crane hire with operator.
Timber construction
Timber construction works for terrace floors, dormers, new builds, conversions and smaller timber construction works.
Trust & reputation

ranQ Trust Score of Alfred Brönnimann AG Dachdeckergeschäft: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Alfred Brönnimann AG Dachdeckergeschäft scores 79.5 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.74.624%
  • 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.74.910%
  • 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.100.08%
Alfred Brönnimann AG Dachdeckergeschäft 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%
Alfred Brönnimann AG Dachdeckergeschäft 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%
Alfred Brönnimann AG Dachdeckergeschäft scores 7.4 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 35.7.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Alfred Brönnimann AG Dachdeckergeschäft 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 18 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 18 reviews across all connected sources

Sources
GGoogle4.618
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Rüchligweg 65
4125 Riehen

At a glance

Legal form
Corporation
UID
CHE-112.263.995
Founded
2005 · 21 years
Last commercial register change
July 9, 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.100.06%
  • 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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