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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesSecurity ServicesZurichPrivatdetektei Erismann
Privatdetektei Erismann Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the provision of detective services, including information gathering, surveillance, personal protection, asset protection, chauffeur services and investigations for private individuals, companies, municipalities and lawyers.

AI-generated
Offering

Products & services

Industry:Security Services
✓ Offered6
Private detective agency
Address tracing, workplace tracing, surveillance, person search and missing-person search, background checks, investigations into stalking and threatening letters, neighbourhood disputes, bullying, vandalism, undeclared work.
Investigations for companies and insurers
Surveillance, sick-leave and employee checks, candidate screening, billing fraud, losses on receivables, person surveillance, property damage, undeclared work, video surveillance, theft and insurance fraud.
Investigations for municipalities
Social welfare abuse, social detective operations, false declarations and billing fraud, verification of place of residence, surveillance for littering and vandalism.
IT forensics
Digital trace search, identification of the authors of digital documents, searching for personal data on the internet, clarification of data theft, search for hidden video cameras, internet fraud and phishing fraud.
Personal protection
Unarmed and armed personal protection, escort service for VIPs, children and elderly people, child protection, protection of property and surveillance, transport service also at night.
Information event
Fee-paying event with theory, Q&A session, snacks and drinks; insight into requirements, training places, working environment, areas of responsibility and observation.
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4.1/5

Privatdetektei Erismann

Trust & reputation

ranQ Trust Score of Privatdetektei Erismann: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Privatdetektei Erismann scores 74.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.76.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.67.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Privatdetektei Erismann scores 71.2 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.83.012%
  • 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%
Privatdetektei Erismann scores 85.0 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).85.022%
Privatdetektei Erismann scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Privatdetektei Erismann reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 13 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.713
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Seefeldstrasse 152
8008 Zurich
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-443.102.875
Founded
2017 · 9 years
Last commercial register change
April 13, 2017
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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