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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsPerlyAtelier 3A Sàrl
Atelier 3A Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Atelier 3A is the provision of architectural and engineering services, particularly in the field of construction and real estate projects. This includes the planning, design and supervision of construction projects, as well as assistance with project development and implementation. The company also offers services in the areas of urban planning, promotion and assistance with project ownership (AMO).

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Products & services

Industry:Architecture Firms
✓ Offered5
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Atelier 3A Sàrl

Architecture
Architecture for single-family and multi-family residences, villas, conversions, renovations and new builds; design, studies and feasibility, building permit submission, and execution-phase supervision.
Construction management
Construction management for construction and renovation projects, with execution-phase support and coordination of the site until handover of the keys.
Owner’s project management (AMO)
Owner’s project management including project steering and direction, land consolidation, easements, administrative and financial management, marketing and operations.
Energy-efficient renovation
Energy-efficient renovation of single-family homes, multi-family buildings, listed properties or multi-purpose buildings; thermal insulation, doors and windows, solar shading, heating, domestic hot water and ventilation.
Real estate development
Development of new-build construction projects, with design of semi-detached villas and other residential operations for sale.
Trust & reputation

ranQ Trust Score of Atelier 3A 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.

Atelier 3A 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%
Atelier 3A Sàrl scores 70.2 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.70.212%
  • 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%
Atelier 3A Sàrl 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%
Atelier 3A Sàrl scores 65.7 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 35.65.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Atelier 3A 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 de Saint-Julien 296
1258 Perly
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-274.664.955
Founded
2020 · 6 years
Last commercial register change
October 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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