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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsUrtenen-SchönbühlKeller Treppenbau AG
Keller Treppenbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company is primarily engaged in the manufacture and distribution of stairs and dining tables, specializing in the individual design and production of these products. The core activity includes the planning, production and assembly of stairs and dining tables, as well as consulting and supporting customers in selecting and adapting these products to their individual needs.

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Products & services

Industry:Specialized Construction Installations
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Keller Treppenbau AG

4
Stair construction
Custom-made Swiss staircases produced in-house, including planning and AVOR, on-site measurements, delivery, installation, warranty and service.
Stair types
Cantilevered stairs, stringer stairs, spiral staircases, folding-work (folded-structure) staircases, cantilever steps, space-saving staircases, outdoor stairs, as well as handrails and steps for existing staircases.
Stair studios
Stair studios in Urtenen-Schönbühl, Baden-Dättwil, Nyon and Volketswil for consultation, viewing of the staircase gallery, and information on opening hours.
Dining tables
Custom-made dining tables made of wood, individually designed with the desired shape, table legs and surface finish.
Trust & reputation

ranQ Trust Score of Keller Treppenbau AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Keller Treppenbau AG scores 84.9 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.80.724%
  • 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.92.510%
  • 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.88.08%
Keller Treppenbau AG scores 95.0 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.82.07%
Keller Treppenbau 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%
Keller Treppenbau AG scores 54.3 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 35.54.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller Treppenbau AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 37 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
4.7
of 5

Aggregated from 37 reviews across all connected sources

Sources
GGoogle4.737
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Moosstrasse 7
3322 Urtenen-Schönbühl

At a glance

Legal form
Corporation
UID
CHE-105.928.826
Founded
1975 · 51 years
Last commercial register change
June 19, 2026
Employees
21 to 50
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.95.03%
    • Full methodology

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