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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectLa Chaux-De-FondsC5 Architectes SA
C5 Architectes SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

C5 Architectes SA is an architectural firm providing design, project management and site supervision for industrial, public and residential buildings, as well as alterations and restorations. The practice also offers specialised services including BIM modelling, building condition and energy diagnostics (EPIQR+), owner’s representative (BAMO) services, technical and valuation expert reports, and preparation of condominium (PPE) dossiers.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Architect
✓ Offered12
Design and construction of buildings
Design and construction of industrial, administrative, banking, school and gymnasium buildings, medical and pharmaceutical practices, as well as penitentiary facilities.
Design and construction of residential buildings
Design and construction of single-family homes, semi-detached and terraced houses, rental buildings and PPE units.
Architectural direction and site management
Architectural direction, supervision of works and overall management of works for public and private projects.
Transformation, refurbishment and renovation
Transformation, refurbishment and renovation of existing buildings, with adaptation of uses and reinstatement to working condition.
Restoration of historic buildings
Restoration of historic buildings and interventions related to the conservation of existing structures.
Reconfiguration of interior spaces
Reconfiguration of interior spaces and organization of volumes for existing or new buildings.
Urban planning studies
Urban planning studies, in particular neighbourhood plans and coordination related to land-use planning.
Project management
Project management, interdisciplinary collaboration and management of consortia for studies, architecture, engineering and urban planning.
BIM services
BIM services, building information modelling for the design and coordination of projects.
Owner’s representative office (BAMO)
BAMO services for assisting the owner/client, coordination and support for project steering.
Technical and judicial appraisals
Judicial and technical appraisals and valuations in market values for all types of buildings, as well as evidence-recording for the future.
Surveys, digitalisation and PPE files
Surveys of plots of land and existing buildings, digitisation of plans and preparation of PPE files.
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4.1/5

C5 Architectes SA

Trust & reputation

ranQ Trust Score of C5 Architectes SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

C5 Architectes SA scores 52.3 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.53.524%
  • 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.35.310%
  • 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%
C5 Architectes SA scores 93.9 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%
C5 Architectes SA scores 86.7 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).86.722%
C5 Architectes SA scores 62.9 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 35.62.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

C5 Architectes SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.3 out of 5 stars from 3 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
3.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle3.33
★TrustpilotSoon
PProvenExpertSoon

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

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Location

rue de la Côte 5
2301 La Chaux-De-Fonds

At a glance

Legal form
Corporation
UID
CHE-106.637.461
Founded
1997 · 29 years
Last commercial register change
February 11, 2026
Employees
21 to 50

Active in 1 of 26 cantons

  • NENeuchâtel
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.85.03%
    • Full methodology

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