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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryReal EstateHousing CooperativesZurichGemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ)
Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Röntgenhof is the management and administration of residential estates, particularly in the area of social and non-profit housing construction. The company offers affordable and environmentally friendly living space for the broad population and places emphasis on a strong community and good neighborhood.

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Products & services

Industry:Housing Cooperatives
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4.4/5

Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ)

Property Management
Real Estate Brokerage
✓ Offered8
Rental apartments
Affordable rental apartments in around 20 housing estates in the city of Zurich and in surrounding municipalities; various apartment sizes, ongoing lettings and internal applications.
Cooperative membership
Membership for tenants of an apartment; admission through the apartment application, without a waiting list, with rules for documents, lease terms and rental deposits.
Letting of ancillary properties
Application for ancillary properties such as a parking space or hobby room; interested parties are recorded via the online form and contacted when suitable vacant units are available.
Deposit cashbox
Savings account for members with interest-bearing deposits, minimum balance, withdrawal rules and written payment orders; managed at the office.
Management of housing estates
Administration, maintenance and renewal of own housing estates with apartments, outdoor areas, commercial spaces, shared rooms and parking spaces.
Repair report
Online reporting of repairs and faults via the ImmoApp for residents of the housing estates.
Construction projects
New builds and renovations of housing estates; information on project progress, replacement construction and ongoing construction phases.
Office and personal consultation
Contact, opening hours, telephone information and on-site support for members, prospects and emergencies.
Trust & reputation

ranQ Trust Score of Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ): 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 100% · As of October 2026

Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) scores 84.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.73.324%
  • 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.99.510%
  • 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.100.08%
Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) scores 91.6 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.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.82.07%
Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) scores 86.7 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).86.722%
Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) scores 31.5 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 35.42.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.20.04%
Qualifications+0.00

Gemeinnützige Baugenossenschaft Röntgenhof Zürich (GBRZ) reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 49 customer reviews. 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 49 reviews across all connected sources

Sources
GGoogle4.549
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 9, 2026Media
Ersatzneubau Wohnsiedlung Holunderhof Schneider Studer Primas
world-architects.com
September 22, 2022Media
Bauprojekt in Rümlang: Jetzt werden im Röntgenhof 139 neue Wohnungen gebaut
tagesanzeiger.ch
May 12, 2021Media
Petition wegen Siedlungsumbau - Siedlung Röntgenhof in Rümlang stösst auf Widerstand aus der Nachbarschaft
tagesanzeiger.ch

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Location

Ottostrasse 5
8005 Zurich
Opening hours
Mon
08:30 - 11:30, 13:30 - 16:00
Tue
08:30 - 11:30, 13:30 - 16:00
Wed
08:30 - 11:30, 13:30 - 16:00
Thu
08:30 - 11:30, 13:30 - 16:00
Fri
08:30 - 11:30, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Cooperative
UID
CHE-101.765.270
Founded
1925 · 101 years
Last commercial register change
May 19, 2026
Employees
21 to 50
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.97.06%
  • 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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