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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionDuggingenH. Nussbaumer GmbH
H. Nussbaumer GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

H. Nussbaumer GmbH is a metalworking company offering locksmith/metal workshop services, structural metalwork, forging work and fence construction, and producing special fabrications such as mailboxes, insect-protection grilles and custom developments.

AI-generated
Offering

Products & services

Industry:Metal Construction
✓ Offered11
Metal construction
Doors, windows, façade cladding and other metal fabrications, including the execution of examples such as window installation and finishing of container yards.
Metal fabrication
Railings, handrails, carports, balconies and other custom metal fabrications, with individual manufacturing and installation.
Wrought-iron work
All kinds of wrought-iron and artistic wrought-iron work, for example garden gates, wrought-iron fencing systems, window grilles and railings.
Fence construction
Fences of all kinds for private gardens, sports grounds and industrial sites, with planning and implementation as required.
Custom special fabrications
Special fabrications according to your wishes, from bespoke metal structures to devices and installations in line with customer requirements.
Custom developments
Development of devices and installations according to your wishes, including custom special solutions such as a fire pit with a grill grate.
Insect protection screens
Insect protection screens for windows and light wells, made and fitted to match; cooperation in this field with a specialist partner.
Letterboxes
Supply and professional installation of letterboxes in different models according to your preferences.
Basement partitioning
Basement partitioning with tailor-made sheet-metal or grid systems, with lockable doors.
Pergolas
Pergolas and balcony glazing, from simple balcony glazing to a completed pergola.
Shaft safety guards
Shaft safety guards to order, as a specialised metal solution for protecting shafts.
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3.8/5

H. Nussbaumer GmbH

Trust & reputation

ranQ Trust Score of H. Nussbaumer GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

H. Nussbaumer GmbH scores 53.8 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.70.824%
  • 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.27.910%
  • 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.35.08%
H. Nussbaumer GmbH scores 83.0 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%
H. Nussbaumer 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%
H. Nussbaumer 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

H. Nussbaumer GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Grellingerstrasse 15
4202 Duggingen

At a glance

Legal form
Limited Liability Company
UID
CHE-113.761.095
Founded
2007 · 19 years
Last commercial register change
November 23, 2009
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

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