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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsGenevaPHD Concept SA
PHD Concept SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of PHD Concept is the provision of architectural services, particularly the planning and design of interior and exterior spaces, taking into account functionality, aesthetics and sustainability. The company offers services such as architectural design, project management and consulting, and works closely with its clients to develop individual solutions that meet their needs and requirements.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered5
Architectural design and project study
Needs assessment, sketches, plans, technical and financial specifications, project design, advice on furniture, equipment and materials.
Administrative building formalities
Assistance with applications to build or demolish, preparation of graphical documents, building permits and general design dossier.
Tendering and selection of contractors
Preparation of the tender package, analysis of bids and support in selecting the tradespeople and contractors working on the site.
Site supervision and handover of works
Coordination of the works, site meetings, regular inspections, reports, progress tracking, final settlement and lifting of reservations.
Interior architecture and space planning
Design of functional and elegant interiors, adaptation of spaces to their use, space planning advice and integration of comfort and the client’s needs.
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4.1/5

PHD Concept SA

Trust & reputation

ranQ Trust Score of PHD Concept SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

PHD Concept SA scores 65.9 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.75.024%
  • 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.40.910%
  • 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.70.08%
PHD Concept SA scores 85.5 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%
PHD Concept 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%
PHD Concept SA scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

PHD Concept SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 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
5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Avenue de la Gare des Eaux-Vives 19
1207 Geneva
Opening hours
Mon
08:00 - 17:30
Tue
08:00 - 17:30
Wed
08:00 - 17:30
Thu
08:00 - 17:30
Fri
08:00 - 15:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.567.009
Founded
1997 · 29 years
Last commercial register change
December 27, 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.
100.0
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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