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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,837 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesBurgdorfRosenbaum Beteiligungen GmbH
Rosenbaum Beteiligungen GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Rosenbaum Beteiligungen GmbH is a piano and grand piano retail and service business offering sales, rentals, tuning and overhaul services. The company represents C. Bechstein instruments and performs workshop revisions, repairs and instrument transport for events.

AI-generated
Offering

Products & services

Industry:Holding Companies
✓ Offered5
Sales of pianos and grand pianos
Sales of pianos and grand pianos, including instruments from the C. Bechstein brand; advice for different requirements and selection of suitable instruments.
Rental of pianos and grand pianos
Rental of pianos and grand pianos, including a transport service for events and concerts; rental offers for private and business use.
Tuning service
Tuning service for pianos and grand pianos of all brands, with expert care and adjustment of the instrument to individual needs.
Repairs and overhauls of pianos and grand pianos
Repairs and overhauls of pianos and grand pianos of all brands, including careful inspection, workshop work and specialization in C. Bechstein as well as Steinway & Sons.
Advice and specialist shop for pianos and grand pianos
Specialist shop with comprehensive advice on pianos and grand pianos, including selection, care, setup and intonation according to customer requirements.
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3.8/5

Rosenbaum Beteiligungen GmbH

Trust & reputation

ranQ Trust Score of Rosenbaum Beteiligungen GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Rosenbaum Beteiligungen GmbH scores 56.8 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.73.124%
  • 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.35.310%
  • 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%
Rosenbaum Beteiligungen GmbH scores 67.8 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.64.612%
  • 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%
Rosenbaum Beteiligungen GmbH 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%
Rosenbaum Beteiligungen GmbH scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Rosenbaum Beteiligungen GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Kirchbergstrasse 189
3400 Burgdorf
Opening hours
Mon
Closed
Tue
14:00 - 17:00
Wed
14:00 - 17:00
Thu
14:00 - 17:00
Fri
14:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-352.421.899
Founded
2021 · 5 years
Last commercial register change
January 22, 2024
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.
88.0
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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