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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringBiel/BienneWalther Bauphysik AG
Walther Bauphysik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Walther Bauphysik AG is consulting and expertise in the fields of building physics, building acoustics and energy, particularly in new and renovation projects. The services include, among others: building physics consulting, building acoustics consulting, energy consulting, preparation of expert opinions in problem cases, analysis and remediation of building damage, thermography, noise protection analysis, U-value and isotherm calculations, and creation of execution and detail plans. The company offers these services to various clients, including architects, builders, private individuals, public authorities, municipalities and cities.

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Products & services

Industry:Technical Consulting & Engineering
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Walther Bauphysik AG

Sealing & Insulation
✓ Offered7
Building physics
Building physics consulting for new builds and renovations, including analysis of building issues and support in clarifying the causes of building defects.
Building acoustics
Advisory and technical clarifications in the field of building acoustics for architects, clients, administrations, municipalities, cities and private parties.
Energy consulting
Advice on energy matters for new builds and renovations, with technical support for clients, architects and private contractors.
Construction consulting
Independent consulting for construction issues in new builds and renovations, with technical support for different clients.
Noise protection
Technical support and clarifications in the field of noise protection as part of building acoustics and building physics services.
Analyses
Analyses and technical investigations for construction issues and problem cases, in particular to clarify causes.
Expert reports
Expert reports for problem cases, with professional assessment and support in identifying the causes of building defects.
Trust & reputation

ranQ Trust Score of Walther Bauphysik AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Walther Bauphysik AG scores 65.2 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.95.08%
Walther Bauphysik 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%
Walther Bauphysik 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%
Walther Bauphysik AG 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

Walther Bauphysik AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
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.

Knowledge

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Location

Brühlstrasse 19
2503 Biel/Bienne
Opening hours
Mon
08:00 - 12:00, 14:00 - 17:00
Tue
08:00 - 12:00, 14:00 - 17:00
Wed
08:00 - 12:00, 14:00 - 17:00
Thu
08:00 - 12:00, 14:00 - 17:00
Fri
08:00 - 12:00, 14:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.796.559
Founded
1983 · 43 years
Last commercial register change
March 26, 2021
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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