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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichTschander, Keller Architekten
Tschander, Keller Architekten Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Tschander.Keller Architekten is the planning and design of renovation and new construction projects in the residential sector, including interior design, in close collaboration with private clients.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered4
Renovation and refurbishment
Renovation and refurbishment projects for living spaces, from the first sketch to move-in; solutions for private clients in close collaboration.
New build and extensions
New build and extension projects for residential buildings, including single-family houses, multi-family houses, storey additions and garden houses.
Interior design
Interior design for bathrooms, kitchens, furniture and details, as well as design solutions for residential, retail and hotel spaces.
Architectural consulting and project development
Consulting and support within the office’s offering for new build and remodelling, with concepts, design and project-based development.
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4.1/5

Tschander, Keller Architekten

Trust & reputation

ranQ Trust Score of Tschander, Keller Architekten: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Tschander, Keller Architekten 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%
Tschander, Keller Architekten scores 80.1 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.97.712%
  • 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%
Tschander, Keller Architekten 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%
Tschander, Keller Architekten scores 6.6 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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tschander, Keller Architekten 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

Dolderstrasse 30
8032 Zurich

At a glance

Legal form
General Partnership
UID
CHE-133.198.688
Founded
2012 · 14 years
Last commercial register change
December 24, 2014
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.
79.0
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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