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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryReal EstateProperty ManagementZurichSommer Immobilien AG
Sommer Immobilien AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sommer Immobilien AG is the management of real estate, in particular the administration of rental properties and condominium owner associations, as well as the accompaniment of purchase and sale mandates for existing clients.

AI-generated
Offering

Products & services

Industry:Property ManagementReal Estate Brokerage
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Sommer Immobilien AG

✓ Offered3
Property management
Professional management and maintenance of properties, with tenant, authority, service provider and tradesman support to optimize income and value.
STWE management
Management of condominium stock ownership communities for small and large groups, with a focus on respectful living together and experienced support.
Property sales and purchases
Support for purchase and sales mandates for existing clients, from A to Z.
Trust & reputation

ranQ Trust Score of Sommer Immobilien AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Sommer Immobilien AG scores 74.1 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.73.224%
  • 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.65.210%
  • 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.88.08%
Sommer Immobilien AG scores 84.6 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.97.712%
  • 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%
Sommer Immobilien AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Sommer Immobilien AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sommer Immobilien AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 12 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
4.6
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle4.612
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Weinbergstrasse 100
8006 Zurich

At a glance

Legal form
Corporation
UID
CHE-338.003.669
Founded
2012 · 14 years
Last commercial register change
March 24, 2026
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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