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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringLa Croix-De-RozonPiasio SA
Piasio SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of PIASIO HTP is to provide services and solutions in the field of civil engineering, particularly in the areas of: excavation work, soil and groundwater remediation, underground and surface work, material valorization, and excavation, demolition and special works. The company also offers a 24/7 emergency service for all types of sewer and network work.

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Offering

Products & services

Industry:Civil Engineering
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4.4/5

Piasio SA

✓ Offered
12
Earthworks
Excavations, earth movements, transports, disposal and backfilling for civil engineering projects and special works.
Sewer and underground works
Sewer rehabilitation and pipelines, excavations, shoring, installation of pipes and conduits for water, gas, electricity, telecommunications, fibre optics and district heating.
Bituminous surfacing
Construction, modifications and development of road traffic areas with bituminous surfacing.
Outdoor landscaping
Development of public or private spaces, paving, slab works, surfacing and playing and sports areas.
Demolition and building stripping
Demolition of all types of structures, building stripping, deconstruction and intervention works on buildings, apartment blocks, villas and structures of art.
Special foundation works
Project dimensioning, pile drilling up to 600 mm to a depth of 10 m, shoring between supports using precast concrete plates.
Material recovery
Recovery of materials from demolitions, on-site crushing, recycling, screening and stabilization of excavated materials.
Waste management and land improvement for agricultural land
Transport and disposal of excavation spoil, management of contaminated spoil, recovery of soils and land improvement for agricultural land.
Trenchless works
Directional drilling, rocket passage and cracking methods to install or renew conduits without opening a trench.
Concrete drilling and sawing
Controlled demolition by concrete sawing and drilling for modification or deconstruction work.
Network assembly services
Provision of approved fitters and welders for network works for gas and water.
Rental of vacuum excavator and micro grader
Rental of a vacuum excavator for confined spaces and a micro grader for precise grading of roads, parking lots and sports facilities.
Trust & reputation

ranQ Trust Score of Piasio SA: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Piasio SA scores 77.9 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.76.324%
  • 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.88.110%
  • 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%
Piasio SA scores 97.4 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.96.07%
Piasio 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%
Piasio SA scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Piasio SA reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 31 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
4.6
of 5

Aggregated from 31 reviews across all connected sources

Sources
GGoogle4.631
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin des Epinglis 40
1257 La Croix-De-Rozon
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.272.116
Founded
1961 · 65 years
Last commercial register change
February 16, 2026
Employees
101 to 500
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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