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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionCarouge GeMichel Ona SA
Michel Ona SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company Michel Ona sa Serrurerie is a specialist in the manufacture, installation and maintenance of metal structures. The core activities include: Metal construction: manufacture of railings, handrails, doors, windows and other metal structures made to measure; Sheet metal work: cutting and folding of steel, stainless steel and aluminum plates up to 3 meters long; Locksmithing: opening doors, replacing cylinders, maintenance and repair of locking systems; Troubleshooting and maintenance: repair and maintenance of metal structures, including inspection, cleaning and lubrication of moving parts; Technical studies and support: conducting diagnoses, creating plans and cost estimates for construction projects. The company thus offers a wide range of services in the field of metal processing and installation.

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Products & services

Industry:Metal Construction
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4.2/5

Michel Ona SA

4
Custom metal construction
Design, fabrication and installation of custom metal structures for new buildings or renovations; metal doors and windows, metal partitions, guard rails, handrails and glazing.
Emergency service and maintenance
Locksmith interventions and maintenance; opening of doors, replacement of cylinders, inspection and adjustment of locks, cleaning and lubrication of moving parts, maintenance contracts.
Custom sheet metal work
Cutting and bending of sheet metal in steel, stainless steel and aluminium up to 3 metres; single parts, small series, metal claddings, connecting parts and prototypes.
Project studies
Taking measurements, plans and standard section drawings, on-site diagnostics and budget estimation for metalwork, in order to evaluate and prepare construction sites.
Trust & reputation

ranQ Trust Score of Michel Ona SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Michel Ona SA scores 73.6 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.70.824%
  • 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.68.910%
  • 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%
Michel Ona SA scores 85.5 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%
Michel Ona SA 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%
Michel Ona SA 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

Michel Ona SA reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 14 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 14 reviews across all connected sources

Sources
GGoogle4.514
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rue des Horlogers 1
1227 Carouge Ge
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.994.343
Founded
1995 · 31 years
Last commercial register change
February 10, 2022
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.
100.0
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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