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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichKOLB Landschaftsarchitektur GmbH
KOLB Landschaftsarchitektur GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of KOLB Landschaftsarchitektur GmbH is the planning and design of landscape architecture projects, particularly in the areas of public space, residential, education/health and commerce. The company offers services such as landscape planning, architecture and project development, and has specialized in the design of outdoor spaces and public squares.

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4.1/5

KOLB Landschaftsarchitektur GmbH

✓ Offered6
Landscape architecture
Design, planning and implementation of outdoor spaces at various scales; concepts and design solutions for landscape-architectural projects in urban and rural environments.
Outdoor space design
Outdoor space design for public areas, residential complexes, educational and healthcare buildings as well as commercial sites; from concept development to implementation.
Advisory, concepts and planning
Advisory, concepts and planning for landscape-architectural assignments; development of design solutions and support for complex projects from the design phase to completion.
Planting and maintenance concepts
Planting and maintenance concepts for outdoor spaces and facilities; part of the landscape-architectural service portfolio.
Construction administration and construction management
Construction administration, cost planning, tenders according to NPK and SIA 451, detailed execution planning and on-site and design supervision for third parties.
Handling of competition and study mandates
Participation in competition procedures and studies in interdisciplinary teams with architects and other specialist planners.
Trust & reputation

ranQ Trust Score of KOLB Landschaftsarchitektur GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

KOLB Landschaftsarchitektur GmbH scores 63.5 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.73.124%
  • 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.35.310%
  • 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%
KOLB Landschaftsarchitektur 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%
KOLB Landschaftsarchitektur 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%
KOLB Landschaftsarchitektur GmbH scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

KOLB Landschaftsarchitektur GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hardturmstrasse 175
8005 Zurich
Opening hours
Mon
09:00 - 18:00
Tue
09:00 - 18:00
Wed
09:00 - 18:00
Thu
09:00 - 18:00
Fri
09:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.871.197
Founded
2010 · 16 years
Last commercial register change
May 24, 2022
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.88.06%
  • 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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