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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBaselyellow z urbanism architecture AG
yellow z urbanism architecture AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

yellow z urbanism architecture AG is an urbanism and architecture practice providing strategy, design and advisory services for urban and landscape projects. Services include formal and informal planning, concepts, competition entries, project facilitation, communication and research.

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Products & services

Industry:Architecture Firms
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4.1/5

yellow z urbanism architecture AG

6
Urban development concepts
Integrated urban development concepts, urban development concepts and development strategies for cities and districts; including vision, fields of action, participation and implementation perspectives.
Framework plans and master planning
Framework plans, master plans and urban development framework plans for neighbourhoods, sites and centres; including urban and open-space development, land-use and phasing strategies.
Urban planning reports and studies
Urban planning reports, studies, test layouts and feasibility studies to clarify development perspectives, building options and spatial guidelines.
Competition designs
Submissions for urban planning and landscape planning competitions, ideas competitions and cooperative procedures; from neighbourhoods to station areas and public spaces.
Neighbourhood development
Design and development of residential, mixed-use and transformation neighbourhoods; including urban structure, open-space concept, distribution of uses and supporting recommendations for action.
Advisory
Advisory in negotiation and implementation processes of urban and spatial development; project-based with strategy, design and accompanying planning.
Trust & reputation

ranQ Trust Score of yellow z urbanism architecture AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

yellow z urbanism architecture 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.
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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%
yellow z urbanism architecture AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.55.07%
yellow z urbanism architecture 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%
yellow z urbanism architecture AG scores 82.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.82.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

yellow z urbanism architecture 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

Oetlingerstrasse 173
4057 Basel

At a glance

Legal form
Corporation
UID
CHE-103.622.291
Founded
1985 · 41 years
Last commercial register change
January 19, 2026
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.100.06%
  • 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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