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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureLandscapingRiehenHGA GmbH
HGA GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

HGA GmbH provides building maintenance and facility management for properties and installations. Its services include cleaning, maintenance of building systems, garden and grounds care, underground garage upkeep, and winter services.

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Offering

Products & services

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4.1/5

HGA GmbH

Industry:
Landscaping
Cleaning company
Facility management
✓ Offered6
Facility management
Facility management for properties, including building caretaking, building cleaning, plant maintenance, garden maintenance, underground parking maintenance and winter service; on request as a subscription or standing order.
Property caretaking
Property caretaking for properties with basic and maintenance cleaning, stairwell cleaning, minor repairs, glass and building cleaning, damage reports, safety checks and scheduled maintenance.
Grounds maintenance
Grounds maintenance for outdoor areas including cleaning of garden arbors, clearing of drainage channels, leaf removal, trimming back and provision and returning of refuse and green waste containers.
Garden maintenance
Garden maintenance for green areas with sowing, mowing, scarifying, watering, fertilising, hedge trimming, pruning of shrubs, clearing, replacement planting and seasonal care services.
Underground parking maintenance
Underground parking maintenance for parking halls and parking structures with dry cleaning, sweeping, wet and high-pressure cleaning, cleaning of pipes and gates, de-icing, snow clearing and functional checks.
Winter service
Winter service with snow clearing of paths and driveways, spreading service with grit and salt, keeping water drains clear, removing ice and on-call duty.
Trust & reputation

ranQ Trust Score of HGA GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

HGA 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%
HGA GmbH scores 86.7 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.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.70.07%
HGA GmbH 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%
HGA 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

HGA 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Wendelinsgasse 28
4125 Riehen

At a glance

Legal form
Limited Liability Company
UID
CHE-111.979.849
Founded
2004 · 22 years
Last commercial register change
February 7, 2025
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

    Active in 3 of 26 cantons · 2 municipalities

    • Northwestern Switzerland
    • BSBasel
    • BSRiehen

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