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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementGrand-LancyJEROME GENTIL CONSTRUCTIONS Sàrl
JEROME GENTIL CONSTRUCTIONS Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Gentil Constructions is the planning, coordination and execution of construction projects, including architecture, construction supervision and project management. The company offers a comprehensive service that covers all phases of a construction project, from project definition and budgeting to realization and handover of the completed building.

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Products & services

Industry:Construction & Project Management
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3.9/5

JEROME GENTIL CONSTRUCTIONS Sàrl

✓ Offered6
Architecture
Architecture for construction and renovation projects, preparation of building permits, detail plans, partial or complete project management as required by the client.
Site supervision
Site supervision for new-build or renovation projects, coordination of contractors, planning, tendering, monitoring the budget, schedule and technical requirements.
Realisation of construction projects
Realisation of tailored construction projects, from defining the requirements to handover of the keys, with coordination of technical partners and architects.
Building renovation
Renovation of villas, apartments, offices, roofs and chapels, including compliance for fire protection, safety and insulation according to the projects.
Transformation and fit-out of premises
Conversion of offices into a hotel, veterinary clinic, massage rooms or work centre, as well as fit-out of basements and underground parking.
Construction of new housing
Construction of new housing developments, in particular PPE and HM apartments, with coordination of the stakeholders and site monitoring up to delivery.
Trust & reputation

ranQ Trust Score of JEROME GENTIL CONSTRUCTIONS Sàrl: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 54% · As of October 2026

JEROME GENTIL CONSTRUCTIONS 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.
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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%
JEROME GENTIL CONSTRUCTIONS Sàrl scores 67.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.64.612%
  • 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.55.07%
JEROME GENTIL CONSTRUCTIONS Sàrl scores 85.0 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).85.022%
JEROME GENTIL CONSTRUCTIONS Sàrl scores 0.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

JEROME GENTIL CONSTRUCTIONS Sàrl reaches a ranQ Trust Score of 3.9 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.

Knowledge

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Location

Route des Jeunes 105A
1212 Grand-Lancy
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-425.255.771
Founded
2021 · 5 years
Last commercial register change
July 2, 2021
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.88.06%
  • 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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