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

About the company

ATAU Sàrl is an atelier of architecture and urbanism providing architectural design and project delivery, including residential construction, renovations, and neighbourhood and urban planning projects.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered5
Architecture
New construction projects, extensions, villas, residential buildings, school buildings and facilities; design, development and supervision of complex projects.
Urban planning and land-use planning
District plans, urban renewal, development of PAD and large-scale projects, from the district plan to implementation.
Renovation and building transformation
Major interior renovations, complete transformations, restoration of existing buildings, upgrading of technical systems, finishes and acoustics.
Architecture and urban planning competitions
Participation in architecture, school buildings, infrastructure and competitions for the upgrading of roads or public spaces.
District planning studies and mandates
Development of district plans, development studies and coordination of residential projects with integration of parking and common areas.
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4.1/5

ATAU Sàrl

Trust & reputation

ranQ Trust Score of ATAU 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.

ATAU 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%
ATAU 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%
ATAU 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%
ATAU Sàrl scores 8.0 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 35.8.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ATAU 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

Avenue de Sévelin 13 E
1004 Lausanne

At a glance

Legal form
Limited Liability Company
UID
CHE-346.190.303
Founded
2011 · 15 years
Last commercial register change
August 26, 2025
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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