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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryReal EstateReal Estate BrokerageRieden SgDieter Koller Immobilien
Dieter Koller Immobilien Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Dieter Koller Immobilien is the sale and rental of real estate, including the brokerage of purchase and rental properties, as well as the provision of related services.

AI-generated
Offering

Products & services

Industry:Real Estate Brokerage
✓ Offered2
Real estate brokerage
Marketing and sale of single-family houses, condominiums, multi-family houses, investment properties, building plots and commercial real estate; including market value appraisal, marketing plan, viewings and contract preparation.
Real estate sales
Sales transactions with marketing on Swiss real estate platforms, property documentation, listings, viewings, credit checks, financing and tax advice, and handover.
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3.6/5

Dieter Koller Immobilien

Trust & reputation

ranQ Trust Score of Dieter Koller Immobilien: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 96% · As of October 2026

Dieter Koller Immobilien scores 39.4 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.50.024%
  • 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.35.08%
Dieter Koller Immobilien 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%
Dieter Koller Immobilien scores 83.3 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).83.322%
Dieter Koller Immobilien scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dieter Koller Immobilien reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». The rating draws, among other things, on 1.0 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 October 2026.

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

Reviews

Aggregated rating

Aggregated rating
1
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle11
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bergstrasse 56
8739 Rieden Sg
Opening hours
Mon
09:00 - 19:00
Tue
09:00 - 19:00
Wed
09:00 - 19:00
Thu
09:00 - 19:00
Fri
09:00 - 19:00
Sat
09:00 - 17:00
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-115.849.648
Founded
2010 · 16 years
Last commercial register change
April 8, 2021
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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