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

About the company

Baumberger Bau AG is a timber construction company offering planning and architectural services, engineered timber construction, carpentry, façade work, joinery, interior fit-outs and turnkey building packages including carports and conservatories.

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Offering

Products & services

Industry:General ContractorsInterior Construction
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4.0/5

Baumberger Bau AG

✓ Offered7
Planning and architecture
Planning and architecture in timber construction, advice for new-builds, conservatories, extensions and roof raises, including coordination with authorities and construction management.
Timber construction and interior fit-out
Timber construction and interior fit-out with timber structures, fire-protection linings, installation of roof windows, façade works, insulation, wall paneling, floors, partition walls and cladding.
Carpentry
Carpentry for doors, windows, fitted wardrobes and made-to-measure furniture, complemented by repair and maintenance work as well as advice and sale of materials.
Facade construction
Facade construction and facade renovations with thermal insulation, wooden façades, façade paints, solid core panels and Alucobond cladding, including advice and execution as a complete package.
VELUX roof windows
VELUX roof windows for attic conversions and more daylight, including inspection of the roof structure, advice, installation and conversion from screed to living space.
eAccess electronic safety lock
Electronic access system eAccess by Glutz for interior and exterior doors, with access control, time-limited authorisations, retrofitting and advice.
Complete package
Complete package for construction projects with coordination of all trades, overall management, quotation, building permit application, execution and handover by a single provider.
Trust & reputation

ranQ Trust Score of Baumberger Bau AG: 4.0 out of 5.0

Trust Score4.0/ 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 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%
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 4.0 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

Biberiststrasse 15
4563 Gerlafingen
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
Corporation
UID
CHE-102.789.416
Founded
1973 · 53 years
Last commercial register change
July 21, 2025
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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