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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsOnexDe Giuli & Portier Architectes SA
De Giuli & Portier Architectes SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company de Giuli & Portier architectes SA is an architectural firm specializing in the planning and implementation of construction projects. The company's core activity includes the creation of architectural concepts, project development, construction management, and the implementation of construction projects. The company offers its services to both private and public clients and has offices in Geneva and Lisbon.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered6
Architecture
Architectural research, design, studies and execution of architectural projects, integrating technical, legal, human and financial considerations.
Expertise and studies
Architectural expert assessments, diagnostics, feasibility studies and analyses of sites, techniques and legislation to set the clients’ objectives.
Work execution and construction management
Execution of projects and construction management, coordination of the building site, ensuring architectural quality and protecting clients’ interests in Switzerland and abroad.
Architectural research
Architectural research focused on design, experimenting with new tools and materials, and improving individual and collective quality of life.
BIM and digital models
Use of BIM and digital models for design, coordination of trades, assessment, faster execution and cost reduction.
Sustainability and architecture
Sustainable design, rehabilitation of heritage, building scalability and reversibility, and consideration of urban planning and energy management.
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4.2/5

De Giuli & Portier Architectes SA

Trust & reputation

ranQ Trust Score of De Giuli & Portier Architectes SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

De Giuli & Portier Architectes SA scores 66.5 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.65.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.52.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
De Giuli & Portier Architectes SA scores 92.3 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.82.07%
De Giuli & Portier Architectes SA 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%
De Giuli & Portier Architectes SA scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

De Giuli & Portier Architectes SA reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.3 out of 5 stars from 7 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.37
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Chemin de l'Echo 3
1213 Onex
Opening hours
Mon
08:30 - 12:30, 13:30 - 17:00
Tue
08:30 - 12:30, 13:30 - 17:00
Wed
08:30 - 12:30, 13:30 - 17:00
Thu
08:30 - 12:30, 13:30 - 17:00
Fri
08:30 - 12:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.065.592
Founded
2000 · 26 years
Last commercial register change
February 10, 2025
Employees
21 to 50
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
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