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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryReal EstateReal Estate BrokerageWinterthurWalter Wittwer Partner Immobilien AG
Walter Wittwer Partner Immobilien AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Walter Wittwer Partner Immobilien AG provides services for the development, planning and financing of real estate projects and for the marketing and management of residential and commercial properties. Services include sale of new-build and individual properties, project development, initial leasing, commercial and technical property management, and condominium administration.

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Products & services

Industry:Real Estate Brokerage
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4.4/5

Walter Wittwer Partner Immobilien AG

✓ Offered5
Sale of new-build properties
Marketing of new-build properties, including market analysis, return calculations, sale price and rent structuring, as well as support with notarial matters and condominium ownership.
Sale of individual properties
Marketing of individual residential and commercial properties, including market value appraisals, sales documentation, market presence, sales processing, and support with real estate capital gains tax.
Initial leasing
Initial letting and individual leasing of residential and commercial properties, including market and location analyses, layout planning, rent calculations, letting documents, lease signing, and handover.
Property management
Commercial and technical property management of residential and commercial properties, including tenant care, budget planning, accounting, billing, operational assurance, as well as maintenance and renewal.
Condominium ownership
Brokerage and professional administration of condominium ownership, including representation of owners, coordination of different interests, and handling owners’ concerns.
Trust & reputation

ranQ Trust Score of Walter Wittwer Partner Immobilien AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

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Data basis 96% · As of October 2026

Walter Wittwer Partner Immobilien AG scores 83.9 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.77.224%
  • 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.96.810%
  • 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%
Walter Wittwer Partner Immobilien AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Walter Wittwer Partner 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%
Walter Wittwer Partner Immobilien AG scores 62.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.62.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Walter Wittwer Partner Immobilien AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 44 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 44 reviews across all connected sources

Sources
GGoogle4.644
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Pflanzschulstrasse 3
8400 Winterthur
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.167.004
Founded
1999 · 27 years
Last commercial register change
December 16, 2025
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.100.06%
  • 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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