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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsSementinaStudio d'ingegneria Riccardo Calastri SA
Studio d'ingegneria Riccardo Calastri SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Studio d'ingegneria Riccardo Calastri SA is an engineering firm in geomatics offering official cadastral surveys, technical surveys, land consolidation and digital territory data management. Services include 3D terrain and building models (MDT/BIM), orthophotos, expert reports and precision measurements using drones, laser scanners and terrestrial instruments.

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Products & services

Industry:Civil Engineering Firms
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Studio d'ingegneria Riccardo Calastri SA

✓ Offered6
Official surveying
Service for collecting, processing and distributing official survey measurement data for the land register and territorial information systems, with issuance of official plan views.
Technical surveying
Setting-out, profiles and surveys for buildings, processing of SIT/GIS, precision monitoring and precision levelling.
3D models – Architectural surveys
Creation of digital terrain models, sections, contour lines and building models, with plan views and BIM models using drones, laser scanners and terrestrial surveying.
Expert reports
Expert reports on buildings and land, evidence preservation for buildings, roads and structures, with photographic documentation, levelling and precision monitoring.
Condominium ownership by floors (PPP)
Preparation of the documents for the establishment of ownership by floors and the regulations, including advice and the required documentation.
Telescopic aluminium and wood profile installation
Installation of telescopic aluminium and wood profiles on land and existing buildings, with documentation for the building permit application.
Trust & reputation

ranQ Trust Score of Studio d'ingegneria Riccardo Calastri SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

Studio d'ingegneria Riccardo Calastri SA scores 64.1 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.59.824%
  • 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.63.210%
  • 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.78.08%
Studio d'ingegneria Riccardo Calastri SA scores 92.3 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%
Studio d'ingegneria Riccardo Calastri SA scores 85.0 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).85.022%
Studio d'ingegneria Riccardo Calastri SA scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Studio d'ingegneria Riccardo Calastri SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.1 out of 5 stars from 11 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
4.1
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.111
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Via al Ticino 18
6514 Sementina
Opening hours
Mon
07:45 - 17:00
Tue
07:45 - 17:00
Wed
07:45 - 17:00
Thu
07:45 - 17:00
Fri
07:45 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.586.566
Founded
1992 · 34 years
Last commercial register change
November 4, 2024
Employees
21 to 50
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.100.06%
  • 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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