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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement ConsultingKastanienbaumMantzke Family Office
Mantzke Family Office Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Mantzke Family Office is the establishment and management of companies, trusts and foundations for private individuals and families, as well as the structuring and management of investments in Swiss real estate and private equity. This also includes services such as the creation of corporate documents, the management of bank accounts and credit cards, as well as the provision of accounting and trust services. The goal is to optimize and protect the assets of its clients.

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Products & services

Industry:Management ConsultingFamily Offices
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Mantzke Family Office

Fiduciary Offices
✓ Offered7
Company Formation
Formation of companies in Switzerland, Liechtenstein and other onshore and offshore jurisdictions, including domiciliation and administrative support.
Swiss Nominee Director / Board Member Service
Provision of directors and board members domiciled in Switzerland or Liechtenstein for holding, operating and license-required companies, including representation and administration.
Family Office Services
Structuring of companies, trusts and foundations as well as tailored family office solutions with support related to structuring, fiduciary services and accounting.
Accountancy
Bookkeeping, annual financial statements, tax returns, VAT declarations, bank transactions, and coordination of audits and payroll and social security registrations.
Real Estate & Relocation Services
Support with apartment hunting, purchase and sale of real estate, visas and work permits, as well as move and settlement organisation.
Swiss Real Estate & Private Equity Advisory
Advisory and support for structuring and holding Swiss real estate and private equity investments, as well as sourcing and developing the relevant assets.
Art Collection Management
Collecting, storing and managing artworks in one's own name and at one's own expense as well as on behalf of clients.
Trust & reputation

ranQ Trust Score of Mantzke Family Office

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

Data basis 54% · As of October 2026

Mantzke Family Office 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%
Mantzke Family Office scores 78.5 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%
Mantzke Family Office 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%
Mantzke Family Office 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.

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Location

St. Niklausenstrasse 59
6047 Kastanienbaum

At a glance

Legal form
Sole proprietorship
UID
CHE-112.690.937
Founded
2010 · 16 years
Last commercial register change
March 8, 2022
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.
67.0
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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