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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentrySchwellbrunnBlumer BSB AG
Blumer BSB AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Blumer BSB AG is the planning, manufacturing and assembly of timber structures, particularly glulam structures, for various applications such as bridges, roof systems, sales buildings, agricultural, industrial and commercial halls, as well as sports and leisure halls. The company relies on precise engineering and innovative connection techniques, including its own BSB connection system.

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Products & services

Industry:Timber Construction & Carpentry
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3.7/5

Blumer BSB AG

✓ Offered
7
Engineering Timber Construction
Design and execution of timber load-bearing structures from concept to delivery to the construction site, including preliminary sizing, structural analysis, detail development and workshop planning.
BSB System
Connecting system for rod-like timber load-bearing structures with glued laminated timber, steel plates and dowel pins; suitable for connections to steel, concrete and timber structures.
Fabrication
Cutting and fitting work, creation of machine data, surface treatment, pre-assembly in the workshop hall as well as kits with steel parts, connectors and assembly plans.
Timber Bridges
Planning and realisation of timber bridges and walkways for various projects and spans.
Industrial and Commercial Timber Halls
Planning and realisation of industrial, commercial, production and workshop halls as well as logistics buildings in timber load-bearing structures.
Agricultural Timber Buildings
Planning and realisation of agricultural buildings such as stables, barns, carriage sheds and laying-hen houses.
Sports and Leisure Buildings
Planning and realisation of sports halls, leisure halls, bathhouses, hangars and public buildings with timber load-bearing structures.
Trust & reputation

ranQ Trust Score of Blumer BSB AG: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 100% · As of October 2026

Blumer BSB AG scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
Blumer BSB AG scores 72.8 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.70.212%
  • 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%
Blumer BSB 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%
Blumer BSB AG scores 23.8 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 35.34.34%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.13.34%
Qualifications+0.00

Blumer BSB AG reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

August 28, 2025Media
Schwingfest-Muni Max ist auch Appenzeller
appenzell24.ch

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Location

Eisigeli 1221
9103 Schwellbrunn
Opening hours
Mon
07:00 - 17:15
Tue
07:00 - 17:15
Wed
07:00 - 17:15
Thu
07:00 - 17:15
Fri
07:00 - 17:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-195.064.803
Founded
2020 · 6 years
Last commercial register change
December 21, 2021
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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