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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsChiassoDiego Ostinelli
Diego Ostinelli Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company's core activity is the provision of architectural services.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered5
Architectural design
Design and implementation of residential, administrative and industrial buildings; development of public projects, competitions, design studies and construction details.
Renovations and building refurbishments
Renovations, extensions and refurbishments of houses, apartments, offices, administrative and industrial buildings, with interior works and building transformations.
Site supervision and construction site coordination
Site supervision, coordination of work on site, cost control, estimates, specifications and settlements in accordance with the SIA and CCC/CRB requirements.
Consulting and expert reports
Expert reports and consulting for building projects, with technical support throughout the implementation phases and collaboration with external designers.
Fit-outs and interior furnishing
Fit-outs, interior furnishings and interior design for homes, offices, medical practices, bars and other functional spaces.
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4.1/5

Diego Ostinelli

Trust & reputation

ranQ Trust Score of Diego Ostinelli: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Diego Ostinelli has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Diego Ostinelli scores 78.5 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%
Diego Ostinelli scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).83.322%
Diego Ostinelli scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Diego Ostinelli reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Via Generale Enrico Guisan 29
6830 Chiasso

At a glance

Legal form
Sole proprietorship
UID
CHE-107.483.261
Founded
1993 · 33 years
Last commercial register change
January 8, 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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