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

About the company

The core activity of O&C Architectes SA is the provision of architectural services, particularly in the fields of urban planning and building design, for both public and private projects.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered4
Private Architecture
Residential architecture for villas, apartment buildings and housing conversions; design of private projects, from study to implementation.
Public Architecture
Architecture for public and educational facilities; projects for school centres, schools and public spaces, from concept to implementation.
Urban Development
Urban development and revitalisation of public spaces; squares, village centres, street infrastructure and urban spaces.
Construction Management
Construction management for architectural projects, carried out by architects from the team.
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4.0/5

O&C architectes SA

Trust & reputation

ranQ Trust Score of O&C architectes SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

O&C architectes SA scores 59.3 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.35.08%
O&C architectes 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%
O&C 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%
O&C architectes SA scores 5.1 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 35.5.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

O&C architectes SA reaches a ranQ Trust Score of 4.0 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 du Crochetan 2
1870 Monthey
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:30
Tue
08:00 - 12:00, 13:00 - 17:30
Wed
08:00 - 12:00, 13:00 - 17:30
Thu
08:00 - 12:00, 13:00 - 17:30
Fri
08:00 - 12:00, 13:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.520.791
Founded
1985 · 41 years
Last commercial register change
April 28, 2026
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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