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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringOltenBauphysik Schweiz GmbH
Bauphysik Schweiz GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Bauphysik Schweiz GmbH is the building physics planning and consulting for high-rise construction projects in Switzerland. Specifically, this includes the creation of certificates and consulting in the areas of energy efficiency (energy certificate, Minergie applications, subsidy applications), acoustics (sound insulation certificates, room acoustics measurements), building physics inspection of constructions and materials, optimization of building envelopes and thermal insulation concepts, damage analysis and moisture measurements. The company thus offers comprehensive services for the planning and realization of energy-efficient and acoustically optimized buildings in Switzerland.

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Products & services

Industry:Technical Consulting & Engineering
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4.1/5

Bauphysik Schweiz GmbH

✓ Offered12
Energy assessment
Energy assessments according to SIA standard 380/1 (MuKEn), including single component or system evidence, a building-physics check, material recommendations and optimization of the building envelope.
Minergie applications
Support with Minergie applications for Minergie, Minergie Eco, Minergie P and Minergie A in various cantons.
Acoustic insulation evidence
Acoustic insulation evidence according to SIA standard 181 for indoor noise as well as evidence for the Noise Protection Ordinance for outdoor noise, including calculations with CadnaA in complex situations.
Subsidy applications
Advice and preparation of national subsidy applications for new builds and renovations, including support with the funding application.
Energy consulting
Energy consulting for renovations and new builds, covering building envelope, heating systems, renewable energies, funding options and support with the funding application.
Acoustic consulting
Consulting on room acoustics, indoor noise and outdoor noise, with solutions for speech intelligibility, sound insulation and external noise assessment reports.
Cantonal building energy certificate (GEAK / GEAK-Plus)
Issuance of GEAK and GEAK-Plus, including an advisory report on improvement measures as well as building analysis with recommended procedure according to BFE.
Air tightness testing
Blower-Door tests to check the air tightness of the building envelope and to prevent energy losses as well as odour emissions between use units.
Sound insulation measurements
Measurements of indoor and outdoor noise to locate sound insulation defects, assess noise transmission and derive measures.
Room acoustics measurements
Measurement of reverberation time and room acoustics, especially for theatres, training rooms, lecture halls and similar presentation rooms, with suggestions for optimization.
Moisture measurements
Assessment of moisture damage, recording the extent of the damage on site and developing sustainable remediation proposals.
Damage analysis
Analysis of building-physics-related damage, derivation of possible measures and development of proposals for sustainable remediation; on request, usable as an expert report.
Trust & reputation

ranQ Trust Score of Bauphysik Schweiz GmbH: 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.

Bauphysik Schweiz GmbH 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%
Bauphysik Schweiz GmbH scores 84.7 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.95.212%
  • 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%
Bauphysik Schweiz GmbH 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%
Bauphysik Schweiz GmbH 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

Bauphysik Schweiz GmbH 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

Ziegelackerstrasse 5
4600 Olten
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
Limited Liability Company
UID
CHE-274.226.644
Founded
2013 · 13 years
Last commercial register change
November 9, 2022
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.
88.0
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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