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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureHorticulture & LandscapingZihlschlachtOtto Keller Gartenbau AG
Otto Keller Gartenbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Otto Keller Gartenbau AG is the planning, design, maintenance and upkeep of gardens, green spaces and sports fields, including the construction of walls, greening of roofs and the maintenance of bodies of water. The company also offers services such as garden maintenance, sports field construction, garden design and redesign, soil covering work, wall construction and water installations in gardens.

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Offering

Products & services

Industry:Horticulture & Landscaping
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Otto Keller Gartenbau AG

✓ Offered7
Landscaping
Landscaping for new installations, redesigns, flooring, wall construction and water features in the garden; including planning, on-site consultation and careful execution.
Sports pitch/grass
Sports pitch construction and lawn care for new installations, renovations, sports ground maintenance, home lawns as well as machine sales; including consultation, construction and ongoing maintenance.
Garden maintenance
Garden maintenance including garden cutting and upkeep, cemetery maintenance and facility management; seasonal care and maintenance work for green areas.
Roof greening
Roof greening for private and commercial properties; as a specialised field alongside the main services in garden and landscape construction.
Stream and waterway maintenance
Stream and waterway maintenance as an additional specialised field for work on watercourses and bodies of water in the outdoor area.
Winter service
Winter service with snow clearing as an additional outdoor area service alongside landscaping and maintenance.
Trench milling
Trench milling for outdoor facilities and subsoil work as an additional technical service.
Trust & reputation

ranQ Trust Score of Otto Keller Gartenbau AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Otto Keller Gartenbau AG scores 83.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.89.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.79.710%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Otto Keller Gartenbau AG scores 92.3 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.82.07%
Otto Keller Gartenbau 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%
Otto Keller Gartenbau AG scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Otto Keller Gartenbau AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 22 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle522
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Wilen
8588 Zihlschlacht
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.833.949
Founded
1995 · 31 years
Last commercial register change
September 29, 2023
Employees
21 to 50
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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