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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsConciseBureau d'étude Jean Chatelain S.à r.l.
Bureau d'étude Jean Chatelain S.à r.l. Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Bureau d'étude Jean Chatelain S.à r.l. provides architectural and territorial planning services, including design for renovations, building conversions and new construction. The firm also offers project coordination and advisory services on energy-efficient design for public and private clients.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered3
Architecture
Architecture of new-build and transformation projects, renovation of houses, adaptive reuse of existing buildings, interior fit-outs and project studies for administrative, cultural, school or residential uses.
Fit-outs and renovations
Renovation of existing buildings, reconfiguration of volumes and spaces, code compliance upgrades, technical and functional adaptation of homes, retail, public buildings and places of living.
Adaptive reuse of buildings
Adaptive reuse of former buildings into administrative centres, educational and training centres, apartments, a dance hall, a library or a prison, with adaptation of the rooms to the new uses.
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4.1/5

Bureau d'étude Jean Chatelain S.à r.l.

Trust & reputation

ranQ Trust Score of Bureau d'étude Jean Chatelain S.à r.l.: 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.

Bureau d'étude Jean Chatelain S.à r.l. 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%
Bureau d'étude Jean Chatelain S.à r.l. scores 74.6 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.86.512%
  • 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%
Bureau d'étude Jean Chatelain S.à r.l. 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%
Bureau d'étude Jean Chatelain S.à r.l. scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bureau d'étude Jean Chatelain S.à r.l. 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

Chemin du Lac 2
1426 Concise
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
07:30 - 12:00, 13:30 - 17:00
Sun
07:30 - 12:00, 13:30 - 17:00

At a glance

Legal form
Branch
UID
CHE-478.575.949
Founded
2016 · 10 years
Last commercial register change
August 25, 2016
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.76.06%
  • 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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