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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMeyrinDG Expertise SA
DG Expertise SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

DG Expertise is primarily involved in environmental and health diagnostics, particularly in the detection and assessment of environmental pollutants and toxins in buildings and workplaces. The core activities include: * Diagnostics of asbestos, lead, polychlorinated biphenyls (PCB), halogenated flame retardants (HAP, HBCD) and other pollutants * Monitoring of construction sites and measurement of air quality * Conducting audits and assessments in the field of energy efficiency and renewable energy * Consulting and training of customers and partners on environmental and health issues The company offers its services in various regions of Switzerland, including Geneva, Fribourg, Vaud, Neuchâtel and Valais.

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Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.1/5

DG Expertise SA

6
Asbestos and pollutant diagnostics
Asbestos, lead, PCB, PAH and HBCD diagnostics for buildings; identification of suspected materials, sampling, laboratory analysis and an officially recognized report.
Remediation site supervision
Site monitoring and management for asbestos abatement and remediation; work plan, coordination with specialized contractors, compliance with technical, administrative and budget constraints.
VDI 3492 air measurements
Ambient air measurements according to VDI-3492 to determine the concentration of respirable asbestos fibres, clearance testing after asbestos abatement and zero measurement before work.
CECB and CECB Plus certificates
CECB/CECB Plus audits and certificates to assess a building’s energy performance, obtain renovation recommendations and support subsidy applications.
Construction waste management
Construction waste management plan, sorting, recovery and disposal of waste, including hazardous waste; regulatory support according to the Romandy cantons.
Renewable energy consulting
Support for energy projects and grants: CECB diagnostic, improvement of the thermal envelope, replacement with renewable energies, photovoltaic packages and heat pump.
Trust & reputation

ranQ Trust Score of DG Expertise SA: 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.

DG Expertise SA 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%
DG Expertise SA scores 82.7 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.89.612%
  • 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%
DG Expertise SA scores 83.3 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).83.322%
DG Expertise SA scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

DG Expertise SA 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.

Knowledge

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Location

Avenue de Vaudagne 33
1217 Meyrin

At a glance

Legal form
Corporation
UID
CHE-226.885.815
Founded
2015 · 11 years
Last commercial register change
June 27, 2024
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.85.03%
    • Full methodology

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