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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryReal EstateProperty ManagementZurichPLAZZA AG
PLAZZA AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of PLAZZA AG is the planning, realization, marketing and management of properties and real estate projects in Switzerland. This includes in particular the management of its own properties as well as the provision of services for third parties in the field of real estate economics.

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Products & services

Industry:Property ManagementReal Estate Brokerage
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3.8/5

PLAZZA AG

Real Estate Project Development
✓ Offered4
Real estate management
Management of residential and commercial properties, parking spaces and existing portfolios in the economic centres of Zurich and Lausanne; including leasing and ongoing care of the company’s own properties.
Real estate development
Planning and execution of development properties and projects in Zurich, Lausanne, Regensdorf, Affoltern am Albis and Crissier at different stages of the project.
Letting of residential, office and commercial spaces
Letting of residential properties, office and commercial spaces as well as parking spaces; currently available properties are listed separately.
Real estate portfolio
Portfolio with predominantly residential and commercial properties as well as development projects in the economic centres of Zurich and Lausanne; supplemented by properties under building rights.
Trust & reputation

ranQ Trust Score of PLAZZA AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of October 2026

PLAZZA AG scores 42.2 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.11.524%
  • 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.95.08%
PLAZZA AG scores 84.8 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.89.612%
  • 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%
PLAZZA AG 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%
PLAZZA AG scores 56.9 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 35.77.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.36.74%
Qualifications+0.00

PLAZZA AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 2.6 out of 5 stars from 17 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
2.6
of 5

Aggregated from 17 reviews across all connected sources

Sources
GGoogle2.617
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 31, 2025Media
Verdichtetes Bauen in Regensdorf: Gestaltungsplan für die Plazza-Überbauung ist genehmigt
tagesanzeiger.ch
January 21, 2021Media
Plazza erwirbt zwei Immobilien in Zürich
cash.ch
December 10, 2015Media
Plazza AG: CFO Peter Oesch verlässt das Unternehmen
immobilienbusiness.ch

Knowledge

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Location

Sieberstrasse 5
8055 Zurich

At a glance

Legal form
Corporation
UID
CHE-450.491.665
Founded
2015 · 11 years
Last commercial register change
August 21, 2026
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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