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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryReal EstateReal Estate BrokerageZurichOswald & Sorge Partner AG
Oswald & Sorge Partner AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Oswald & Sorge Partner AG is the provision of services in the field of real estate economics, particularly in the areas of: real estate valuation and analysis, real estate marketing and transactions, real estate development and redevelopment, financing and banking, and education and consulting in the real estate sector. The company offers independent real estate valuations, market value estimates, due diligence and market assessments, and supports clients in the marketing and sale of real estate. Additionally, it provides training and consulting services for owners, administrations and investors.

AI-generated
Offering

Products & services

Industry:Real Estate Brokerage
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4.1/5

Oswald & Sorge Partner AG

✓ Offered5
Independent real estate valuation
Independent real estate valuation, appraisals, market value appraisals and accredited valuations; DCF, real value, income and hedonic methods; reports for banks, courts, divorce, inheritance, sale and taxes.
Real estate marketing & transactions
Sale and purchase of real estate, strategic real estate marketing, portfolio optimization, investor sourcing, as well as conversion into condominium ownership and establishment.
Real estate development & change of use
Change-of-use analyses, development strategies and optimization of transaction costs for real estate with development or transformation needs.
Digitalisation and software solutions for condominium owners (STWE)
Digital solutions for condominium owners’ meetings, transaction costs and training; app for STWE meetings as well as other software solutions.
Real estate training
Training programme with course modules on building-related knowledge, an valuation crash course, property management, customer support and living in old age.
Trust & reputation

ranQ Trust Score of Oswald & Sorge Partner AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Oswald & Sorge Partner AG scores 75.0 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.71.324%
  • 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.73.510%
  • 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%
Oswald & Sorge Partner AG scores 74.1 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.64.612%
  • 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.70.07%
Oswald & Sorge Partner AG 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%
Oswald & Sorge Partner AG scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Oswald & Sorge Partner AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 17 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
4.5
of 5

Aggregated from 17 reviews across all connected sources

Sources
GGoogle4.517
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Stockerstrasse 60
8002 Zurich
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-468.939.636
Founded
2021 · 5 years
Last commercial register change
April 20, 2023
Employees
11 to 20
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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