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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesWalperswilz-part group AG
z-part group AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of z-part group is the development and implementation of innovative construction projects, particularly in the field of foundation construction without concrete and glass fiber constructions. The company offers a range of services, including: specialized planning (z-plan), product distribution (z-trade), and project implementation (z-build). The core activities include the manufacture and distribution of screw foundations, glass fiber products, and other building materials, as well as the execution of construction projects in the field of modular building. The company focuses on creating sustainable and efficient solutions for the construction industry.

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Products & services

Industry:Specialized Construction Activities
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4.1/5

z-part group AG

✓ Offered6
Specialist design
Specialist design for concrete-free foundation construction and modular GFK structures; from ground investigations and detailed planning through to engineering approval and digital documentation.
Product distribution
Screw foundations, drive-in machines and GFK components; consulting on selection and sizing, logistics to the construction site, technical documentation and records.
Project execution
Installation of screw foundations as self-build, full service or with certified z-partners; also on slopes, with difficult access, in asphalt, including documentation and acceptance.
Screw foundations
Concrete-free screw foundations for private, commercial and public construction projects; various series and fastening solutions for fencing, PV systems, small buildings, installations and infrastructure.
GFK products
Fibre-reinforced products from CTS such as grating panels, cover gratings, sandwich gratings, treads and structural profiles; delivery, cutting to size, installation and engineering for construction applications.
Concrete-free foundation construction
Planning and implementation of foundations without concrete for various construction projects; references show applications for houses, temporary structures, protective walls, walkways, facilities and installations.
Trust & reputation

ranQ Trust Score of z-part group AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

z-part group AG scores 58.0 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.68.224%
  • 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.17.610%
  • 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%
z-part group AG scores 89.3 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.70.07%
z-part group AG 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%
z-part group AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

z-part group AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Aarbergstrasse 42
3272 Walperswil
Opening hours
Mon
07:30 - 11:45, 13:15 - 17:00
Tue
07:30 - 11:45, 13:15 - 17:00
Wed
07:00 - 11:45, 13:15 - 17:00
Thu
07:30 - 11:45, 13:15 - 17:00
Fri
07:30 - 11:45, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.023.309
Founded
2008 · 18 years
Last commercial register change
June 10, 2025
Employees
11 to 20
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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