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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionBiberistBaumberger Bau AG
Baumberger Bau AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Baumberger Bau AG is a timber construction company providing planning, engineering-grade timber construction, interior finishing and joinery services. Offerings include facades, carports, winter gardens, roof extensions and turnkey project packages, as well as electronic locking solutions and VELUX roof-window installations.

AI-generated
Offering

Products & services

Industry:Interior Construction
✓ Offered7
Planning and architecture
Planning, architecture and construction management for timber construction projects, including personal consultation, CAD design, project management, liaison with authorities and overall coordination.
Timber construction and interior fit-out
Timber construction with carpentry works, timber structures, insulation, fire-protective linings, as well as interior fit-out with paneling, parquet, laminate, partition walls and claddings.
Joinery
Custom furniture making, built-in cabinets, doors, windows, roof windows, repair work, fittings, window seals, and security and locking systems.
Facade construction
Facade refurbishments and facade cladding with wooden facades, solid core panels and Alucobond, including advice on materials, colours and energy refurbishment.
The complete package
Complete project execution from planning to acceptance, including coordination of all trades and overall management for new builds, extensions, storey additions, carports, winter gardens and garden structures.
VELUX roof windows
Installation and replacement of VELUX roof windows, dormers and attic conversions to create more daylight and additional living space.
Locking technology / eAccess
Electronic security lock eAccess by Glutz for access control, automatic door latching and keyless management of access authorisations.
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3.9/5

Baumberger Bau AG

Trust & reputation

ranQ Trust Score of Baumberger Bau AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 100% · As of October 2026

Baumberger Bau AG scores 53.8 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.70.824%
  • 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.27.910%
  • 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%
Baumberger Bau AG scores 84.1 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.70.07%
Baumberger Bau 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%
Baumberger Bau AG scores 35.7 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 35.71.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Baumberger Bau AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

January 28, 2022Media
Holzbau Rohrer erhält neuen Besitzer
nfz.ch

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Location

Dammstrasse 66
4562 Biberist
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-188.580.471
Founded
2009 · 17 years
Last commercial register change
July 8, 2025
Employees
11 to 20
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.
76.0
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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