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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSite PreparationZwingenJosef Stark, Nachfolger Martin Stark
Josef Stark, Nachfolger Martin Stark Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of the company "Josef Stark Betonbohrungen" is the execution of concrete works, in particular concrete drilling, concrete milling and concrete cutting.

AI-generated
Offering

Products & services

Industry:Site Preparation
✓ Offered8
Concrete drilling
Concrete drilling, core drilling as well as drilling for ventilation, kitchen, bathroom, heating, sanitary installations, sewer connections, cable/service entry points and key safes.
Concrete cutting
Floor cutting and wall cutting as well as cutting of doors, windows, balconies, staircases, garden walls, canopies, retaining walls and parapets.
Concrete milling
Floor milling and wall milling for concrete work indoors and outdoors.
Concrete demolition and concrete breaking
Hydraulic blasting, concrete breaking and demolition for dismantling and opening works.
Fireplace and Cheminée drilling
Drilling for fireplaces and Cheminées as specialized openings in concrete and masonry.
Boreholes for wells and fountains
Boreholes for granite fountains and natural stone.
Concrete floor grinding
Grinding work on concrete floors for post-processed and levelled surfaces.
Masonry work
Minor masonry work as complementary work around concrete drilling, milling and cutting jobs.
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4.1/5

Josef Stark, Nachfolger Martin Stark

Trust & reputation

ranQ Trust Score of Josef Stark, Nachfolger Martin Stark: 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.

Josef Stark, Nachfolger Martin Stark 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.
x
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%
Josef Stark, Nachfolger Martin Stark 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%
Josef Stark, Nachfolger Martin Stark 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%
Josef Stark, Nachfolger Martin Stark scores 7.4 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 35.7.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Josef Stark, Nachfolger Martin Stark 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

Baselstrasse 26
4222 Zwingen
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-116.318.448
Founded
2010 · 16 years
Last commercial register change
March 6, 2025
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.67.06%
  • 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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