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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZuzwil SgCastellanum GmbH
Castellanum GmbH Logo
Verified· 2 sourcesTrust ScoreNo score yet

Castellanum GmbH

Summary

About the company

The company's purpose is to provide consulting, planning and conception services for complex renovations of historic residential and fortified buildings, with the aim of restoring the original appearance of the objects and paying particular attention to the construction and design of the ancient surfaces. Furthermore, the company may conduct all business that is suitable to promote or facilitate the development of the company and the achievement of its purpose, in particular, carry out all commercial and financial transactions that promote the realization of its purpose. It may participate in other companies, acquire, develop, mediate and sell properties, as well as hold and manage capital investments of all kinds.

Commercial register, canton of SG·As of November 7, 2018View on Zefix
Trust & reputation

ranQ Trust Score of Castellanum GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity.

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Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Castellanum GmbH 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%
Castellanum GmbH scores 74.1 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.79.212%
  • 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%
Castellanum GmbH scores 80.0 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).80.022%
Castellanum GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data. Full methodology

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Location

Herbergstrasse 11
9524 Zuzwil Sg

At a glance

Legal form
Limited Liability Company
UID
CHE-292.592.012
Founded
2018 · 8 years
Last commercial register change
November 7, 2018
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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%

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