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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsWallisellenMezza GmbH
Mezza GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Schlüssel Mezza GmbH is the planning, manufacturing, sales and maintenance of locking systems, locks, keys and security systems, including the creation of locking plans, repair of locks, engraving of nameplates and consulting on escape route planning and burglary protection.

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Products & services

Industry:Specialized Construction Installations
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Mezza GmbH

11
Locking systems
Planning of locking systems, creating locking plans and structure diagrams, individual keyed closures, key-alike systems, central locking systems and master key systems.
Key service and key cutting
Ordering replacement keys, copying keys, registering keys, and key service for common room, front door and car keys, including accessories.
Lock, cylinder and door technology
Measuring and installation of locks, cylinders and locking systems, consultation, planning and installation of security technology, as well as mechanical locking systems and door solutions.
Burglary protection
Burglary protection for front doors and other doors with mechanical security devices and armored bolts to increase resistance against break-in attempts.
Escape route systems
Consulting on the planning of escape routes and offering various escape route systems for doors and security technology.
Engraving and nameplates
Small engravings for nameplates, nameplates with and without logo, engraving on metal, acrylic or plastic, and logo printing.
Signs and safety labels
Signs for letterboxes, doorbells, parking spaces, door signs, as well as escape route, mandatory and warning signs on various materials.
Letterboxes and storage boxes
Letterboxes and storage boxes in various designs, built-in and freestanding models, with parcel box, rain cover, additional compartments and lock cylinders that can be integrated.
Key cabinets
Key cabinets and associated locking solutions for key management and secure storage of keys.
Electronic access solutions
Digital cylinders, digital hardware/locks, wall readers, terminals, digital furniture locks, as well as apps and software for access systems.
Electric door openers
Electric door openers for various installation situations, including special and safety door openers for fire-resistant doors, escape doors and special applications.
Trust & reputation

ranQ Trust Score of Mezza GmbH: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Mezza GmbH scores 90.1 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.89.024%
  • 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.94.410%
  • 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%
Mezza GmbH scores 83.0 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%
Mezza GmbH 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%
Mezza GmbH scores 2.9 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 35.2.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Mezza GmbH reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 40 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
4.9
of 5

Aggregated from 40 reviews across all connected sources

Sources
GGoogle4.940
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Bubentalstrasse 9
8304 Wallisellen
Opening hours
Mon
13:30 - 17:00
Tue
Closed
Wed
Closed
Thu
13:30 - 17:00
Fri
08:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-109.817.841
Founded
2003 · 23 years
Last commercial register change
August 18, 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.
88.0
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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