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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryGrand-LancyE. Colaizzi Sàrl
E. Colaizzi Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

E. Colaizzi Sàrl is a carpentry firm offering bespoke interior and exterior joinery, doors and windows, security installations, and renovation and repair services for private and professional clients.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered9
Custom interior fit-out
Custom interior fit-out in carpentry and bespoke joinery, with dressings, bookshelves and wardrobes tailored to the space, uses and desired finishes.
Custom outdoor fit-out
Custom outdoor fit-out in carpentry, with terraces, carports, garden sheds and shutters made of wood according to the project and the layout of the site.
Custom doors
Entrance doors in PVC, wood or aluminium, apartment entry door and EI30/fire-resistant door, with solutions tailored to use and the context.
Custom windows
Windows in PVC, wood and aluminium, as well as PVC/aluminium and wood/aluminium solutions, depending on the project, replacement or adaptation to the existing structure.
Access security
Security services for intervention after a burglary, securing access points, installation or replacement of bars, locks, cylinders and escutcheons, securing shutters.
Renovation and restoration of carpentry
Renovation and restoration work, in particular on wooden elements, with interventions around parquet and shutters, as well as repair and maintenance.
Custom pergolas
Custom pergolas in aluminium or wood, designed to structure the outdoor area and create a covered space suited to the use and the site layout.
Custom glazing and glass
Custom glazing solutions, shower partitions and replacement of glazing, depending on the project requirements and the existing situation.
Emergency assistance after a burglary
Emergency assistance service after a burglary, with protection and securing of the premises; depending on the situation, installation of wooden panels.
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4.1/5

E. Colaizzi Sàrl

Trust & reputation

ranQ Trust Score of E. Colaizzi Sàrl: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

E. Colaizzi Sàrl has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
E. Colaizzi Sàrl 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%
E. Colaizzi Sàrl scores 83.3 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).83.322%
E. Colaizzi Sàrl scores 3.4 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 35.3.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

E. Colaizzi Sàrl reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Route des Jeunes 6
1212 Grand-Lancy

At a glance

Legal form
Limited Liability Company
UID
CHE-491.681.950
Founded
2011 · 15 years
Last commercial register change
March 10, 2023
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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