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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesFlooring & TilingAltstätten SgStephan Thomann AG
Stephan Thomann AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Stephan Thomann AG is the planning, design and execution of bathroom renovations, ceramic floor and wall coverings, as well as the construction of masonry walls. The company also offers services in the field of interior and exterior wall design.

AI-generated
Offering

Products & services

Industry:Flooring & Tiling
✓ Offered5
Ceramic wall and floor coverings
Ceramic wall and floor coverings for new builds and conversions; if desired also with natural stone, including repairs and refurbishment.
Bathroom refurbishments
Complete bathroom refurbishments with demolition work, plastering, masonry work and subfloor systems; on request, coordination of the other trades.
Natural stone work
Natural stone work for wall and floor coverings as part of new builds, conversions and also repairs and refurbishments.
Facing-clad masonry walls
Masonry walls made from Geo-Pietra or other facing cladding for interior and exterior areas.
Cleaning of ceramic coverings
Professional cleaning of ceramic coverings as a supplementary service for the flooring and covering sector.
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4.1/5

Stephan Thomann AG

Trust & reputation

ranQ Trust Score of Stephan Thomann AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Stephan Thomann AG 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.
x
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%
Stephan Thomann 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%
Stephan Thomann 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%
Stephan Thomann AG scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stephan Thomann AG 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

Tiefenackerstrasse 49
9450 Altstätten Sg

At a glance

Legal form
Corporation
UID
CHE-108.036.551
Founded
1991 · 35 years
Last commercial register change
June 29, 2022
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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