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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceLiestalGebäudediagnostik Siegwart AG
Gebäudediagnostik Siegwart AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Gebäudediagnostik Siegwart AG consists of conducting investigations on asbestos and other pollutants in buildings, including expert accompaniment of pollutant remediation and the implementation of measurements.

AI-generated
Offering

Products & services

Industry:Building Maintenance
✓ Offered4
Hazardous substance testing
Tests for asbestos, PAHs, PCBs, heavy metals and other building pollutants, with documentation on exposure plans and recommendations for remediation and disposal.
Support for hazardous substance remediation
Planning, contractor site visits, support during award procedures, final acceptance and indoor air measurements during and after completion of hazardous substance remediation.
Measurements
Measurement of asbestos fibres in indoor air according to VDI guideline 3492 as well as PCB measurements in indoor air.
Radon remediation
Planning of radon remediation including building surveys, radon measurements, remediation concept, sealing, subfloor extraction and radon wells.
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4.1/5

Gebäudediagnostik Siegwart AG

Trust & reputation

ranQ Trust Score of Gebäudediagnostik Siegwart AG: 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.

Gebäudediagnostik Siegwart AG 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%
Gebäudediagnostik Siegwart AG scores 81.1 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.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%
Gebäudediagnostik Siegwart AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Gebäudediagnostik Siegwart AG scores 8.3 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 35.8.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gebäudediagnostik Siegwart AG 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

Munzachstrasse 26
4410 Liestal

At a glance

Legal form
Corporation
UID
CHE-330.293.506
Founded
2015 · 11 years
Last commercial register change
August 2, 2023
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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