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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryReal EstateReal estate agentSt. GallenApertum GmbH
Apertum GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Apertum GmbH is a real estate brokerage network that provides buying and selling services for residential properties. The organisation originated from a treuhand team at GMTC Treuhand & Consulting AG and uses a regional network to list properties, advise clients and connect buyers with sellers in eastern Switzerland.

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Service area

Offering

Products & services

Industry:Real estate agent
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3.8/5

Apertum GmbH

✓ Offered4
Real estate brokerage
Real estate brokerage in Eastern Switzerland for buying and selling properties, including coordination, viewing appointments, transaction handling, and support with financing and real estate capital gains tax.
Property purchase advisory
Support for buying a property in Eastern Switzerland, including search for suitable properties, market prices, viewings, coordination and transaction handling.
Property sale advisory
Support for selling properties in Eastern Switzerland, with a free initial consultation, coordination, viewings, transaction handling, and assistance with the declaration for real estate capital gains tax.
Property search via network
Search for suitable properties via the Apertum network in Eastern Switzerland, with earlier access to new listings and consideration of the desired criteria.
Trust & reputation

ranQ Trust Score of Apertum GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of November 2026

Apertum GmbH scores 58.0 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.68.224%
  • 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.17.610%
  • 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%
Apertum GmbH scores 65.0 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.58.012%
  • 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%
Apertum GmbH scores 86.7 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).86.722%
Apertum GmbH scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Apertum GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Zürcher Strasse 202
9014 St. Gallen
Opening hours
Mon
07:30 - 11:45, 13:30 - 17:00
Tue
07:30 - 11:45, 13:30 - 17:00
Wed
07:30 - 11:45, 13:30 - 17:00
Thu
07:30 - 11:45, 13:30 - 17:00
Fri
07:30 - 11:45, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-460.770.871
Founded
2022 · 4 years
Last commercial register change
February 27, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • SGSt. Gallen
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%
    • Full methodology

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