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DirectoryConstruction & ArchitectureArchitecture FirmsGrônerossier architecte
rossier architecte Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of the company "rossier architecte hes/sia" is architecture, particularly the planning and design of buildings and spaces. The company also offers additional services such as graphic design, research and humanitarian projects, but the main focus is on architecture.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered9
Architecture
Architecture, construction and renovation; design of architectural projects for existing spaces, buildings and sites.
Building and apartment transformation
Transformation of houses and apartments, redesign of interior floor plans, fittings adapted to users' needs and to the site's conditions.
New construction
Design and delivery of construction projects, in particular houses, housing, facilities and other buildings based on the presented plans.
Architecture of public spaces
Public space projects, including studies and implementations related to squares, public benches and urban developments.
Architectural expert opinions
Architectural expert opinions related to architectural projects, with cases presented in the « expertises » section.
Teaching in architecture
Teaching in the Master’s program in architecture, theoretical seminars, workshops, inter-company courses and supervision of students.
Research in architecture
Research on living, inner transformation, and the relationship between architectural concept and lived experience, with theoretical seminars and research projects.
Graphic design
Creation of posters for the workshop and seminar modules of the jointmaster of architecture in Geneva.
Humanitarian missions in water and housing engineering
Humanitarian missions as a water and housing engineer: village wells, boreholes, hospital renovation, reconstruction of health infrastructure and water supply systems.
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3.6/5

rossier architecte

Trust & reputation

ranQ Trust Score of rossier architecte: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 96% · As of October 2026

rossier architecte scores 49.5 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.50.024%
  • 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.17.610%
  • 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%
rossier architecte scores 67.8 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.75.012%
  • 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%
rossier architecte 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%
rossier architecte scores 7.4 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 35.7.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

rossier architecte reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». The rating draws, among other things, on 1.0 out of 5 stars from 1 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
1
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle11
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rue de la Pogyre 18
3979 Grône

At a glance

Legal form
Sole proprietorship
UID
CHE-225.539.919
Founded
2019 · 7 years
Last commercial register change
May 14, 2020
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.
67.0
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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