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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceButtisholzA-Z Retentionen GmbH
A-Z Retentionen GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

A-Z Retentionen GmbH provides services related to retention systems, including welding polypropylene and polyethylene as well as the installation and sealing of open and closed retention facilities. The company also prepares flood protection systems for buildings and underground structures.

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Products & services

Industry:Building MaintenanceCivil Engineering Firms
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3.9/5

A-Z Retentionen GmbH

Sealing & Insulation
Specialized Construction Activities
✓ Offered4
Installation and sealing of retention systems
Installation and sealing of retention systems, open and closed retention basins, modular systems with controlled backflow, durable operation.
Flood protection systems
Flood protection for houses, basements and underground garages, pre-assembly of protection systems, simple operation by owners, caretakers or tenants.
Plastic welding work
Welding of polypropylene and polyethylene, plastic joints for retention systems and sealing work in plant construction.
Detail connections and sealing
Detail connections and sealing for retention systems and retention basins, including rehabilitation of shaft structures.
Trust & reputation

ranQ Trust Score of A-Z Retentionen GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 54% · As of October 2026

A-Z Retentionen 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%
A-Z Retentionen GmbH scores 50.8 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.25.012%
  • 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%
A-Z Retentionen GmbH scores 83.3 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).83.322%
A-Z Retentionen GmbH scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A-Z Retentionen GmbH reaches a ranQ Trust Score of 3.9 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

St. Ottilien 2
6018 Buttisholz

At a glance

Legal form
Limited Liability Company
UID
CHE-384.642.890
Founded
2025 · 1 year
Last commercial register change
December 5, 2025
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.
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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