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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesRepair of Consumer GoodsChurPiano Grischa, Pius Schumacher
Piano Grischa, Pius Schumacher Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Piano Grischa is the sale, repair and maintenance of pianos and grand pianos, including the rental of concert instruments and the performance of piano repairs, tunings and transports.

AI-generated
Offering

Products & services

Industry:Repair of Consumer Goods
✓ Offered7
Consulting and sales
Pianos, grand pianos and digital pianos; selection, purchase and advice in a piano showroom, including new and used instruments as well as different quality levels.
Piano tuning and care
Tune, inspect, clean and care for pianos and grand pianos; including regulation, voicing, maintenance intervals, and advice on care and location.
Piano repairs and restorations
Small maintenance repairs, general overhauls and restorations for pianos and grand pianos; including work such as voicing, regulation, stringing and tuning block.
Piano transport
Safe transport of pianos, grand pianos and other keyboard instruments; including staircases, on-site setup, and subsequent tuning and voicing.
Concert service
Set up, tune and voice concert instruments; provision of grand pianos and pianos for events, including Steinway & Sons, Bösendorfer and Yamaha.
Expert reports and valuations
Valuation of musical instruments, determination of current market value, and referral of experts for fire, water and transport damage as well as matters related to estates.
Renting concert instruments and student instruments
Rentals of concert instruments and student instruments; includes Steinway concert instruments as well as hireable pianos for beginners and for events.
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4.1/5

Piano Grischa, Pius Schumacher

Trust & reputation

ranQ Trust Score of Piano Grischa, Pius Schumacher: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Piano Grischa, Pius Schumacher has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Piano Grischa, Pius Schumacher scores 75.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.92.512%
  • 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%
Piano Grischa, Pius Schumacher 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%
Piano Grischa, Pius Schumacher scores 4.3 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 35.4.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Piano Grischa, Pius Schumacher reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Lukmaniergasse 14
7000 Chur

At a glance

Legal form
Sole proprietorship
UID
CHE-344.160.981
Founded
2014 · 12 years
Last commercial register change
March 13, 2014
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.
67.0
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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