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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichZiswiler + Partner AG
Ziswiler + Partner AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Ziswiler + Partner AG is an architectural practice that carries out design, planning and construction management for new buildings, renovations and extensions. The portfolio includes residential, commercial and public projects as well as concept and execution planning and occasional product and exhibition design.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered7
Architecture planning
Planning and execution of conversions and new-builds, including detailed execution planning and studies; focus on architecture, interior design and design management.
Construction management
Construction management for construction projects, including site supervision and cost control, as well as personal assumption of construction management functions.
Conversion and renovation
Conversions, renovations, restoration works and roof conversions for residential buildings, public buildings and special-purpose buildings.
New-build planning
New-builds for single-family homes, multi-family houses, farm shops, hotels and other construction projects, each with planning and execution.
Storey extension and expansion
Storey extensions, additions and expansions for residential and mixed-use buildings, including conversion/storey extension and conversion–expansion.
Concept and planning services
Concept development and planning for construction projects, sometimes with subsequent execution.
Feasibility studies
Feasibility studies for building and design projects, as a preliminary assessment before planning and implementation.
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4.1/5

Ziswiler + Partner AG

Trust & reputation

ranQ Trust Score of Ziswiler + Partner AG: 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.

Ziswiler + Partner 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.
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%
Ziswiler + Partner AG scores 85.5 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.55.07%
Ziswiler + Partner AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Ziswiler + Partner AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ziswiler + Partner 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

Zwischenbächen 24
8048 Zurich

At a glance

Legal form
Corporation
UID
CHE-107.631.426
Founded
1994 · 32 years
Last commercial register change
June 16, 2025
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.
100.0
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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