ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementDornachZgraggen Umbauten GmbH
Zgraggen Umbauten GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Zgraggen Umbauten GmbH carries out conversions and renovations, including water-damage repairs and bathroom and kitchen refurbishments. Services include masonry and concrete work, plastering and drywall, and core drilling for pipe and conduit penetrations.

AI-generated
Offering

Products & services

Industry:Construction & Project ManagementGeneral Contractors
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
3.8/5

Zgraggen Umbauten GmbH

✓ Offered4
Alterations
Alterations for water damage, bathroom renovations, kitchen renovations, as well as alterations to apartments, houses and industrial buildings.
Custom masonry work
Custom masonry work with bricks, calcium silicate bricks and natural stone; concrete repairs, concreting of floors, ceilings and walls, floor coverings, steel beam installation, plastering and demolition work.
Plastering work
Plastering of ceilings and walls, white plaster, rough and smooth render indoors and on façades, stucco work, crack bridging, façade insulation and drywall construction.
Core drilling
Core drilling for pipe pass-throughs, drains and recesses; dust-free, low-vibration drilling in concrete, natural stone, brick and calcium silicate brick.
Trust & reputation

ranQ Trust Score of Zgraggen Umbauten GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 54% · As of October 2026

Zgraggen Umbauten GmbH 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%
Zgraggen Umbauten GmbH scores 61.5 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.50.012%
  • 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%
Zgraggen Umbauten GmbH scores 83.3 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).83.322%
Zgraggen Umbauten GmbH scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zgraggen Umbauten GmbH reaches a ranQ Trust Score of 3.8 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.

Knowledge

No knowledge articles yet

Once Zgraggen Umbauten GmbH has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Zgraggen Umbauten GmbH in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Zgraggen Umbauten GmbH by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Zgraggen Umbauten GmbH to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Steinmattweg 15
4143 Dornach

At a glance

Legal form
Limited Liability Company
UID
CHE-328.581.976
Founded
2023 · 3 years
Last commercial register change
June 6, 2023
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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    RG
    Reanova GmbH
    Solothurn
    BG
    BEAT GROLIMUND
    Lostorf
    VP
    Victus Pro GmbH
    Gerlafingen
    MP
    ML Projekt- & Bauleitung GmbH
    Grenchen
    RS
    Renggli Solution GmbH
    Stüsslingen
    NB
    Nextoria Bau GmbH
    Härkingen
    SG
    SANDrY GmbH
    Egerkingen
    AG
    architex gmbh
    Luterbach