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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceMünchensteinSIEGIN GmbH
SIEGIN GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Siegin GmbH is the execution of conversions, renovations and refurbishments in the construction industry, particularly in the areas of customer masonry, plastering, sewer renovation, planning and event construction. The company also offers specialized services such as core drilling.

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Products & services

Industry:Building MaintenanceSite Preparation
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4.0/5

SIEGIN GmbH

Masonry Work
✓ Offered6
Custom bricklaying
All repairs in and on the house, new builds, bathroom and kitchen refurbishments, cellar floors, garage driveways, garden paving, retaining walls and plastering work.
Planning for conversions and renovations
Planning, site management and coordination of conversions and renovations; for smaller projects as general contractor, for larger projects together with architecture and engineering offices.
Plastering work
Plastering and rendering, drywall construction, load-bearing and partition walls, plaster ceilings, façade refurbishments and render finishes as desired.
Sewer rehabilitation
Liner rehabilitation up to the road connection as well as rehabilitation and construction of inspection manholes, including work on house service connections and inspection shafts.
Core drilling
Core drilling in masonry and concrete up to 400 mm for sanitary, electrical, heating, ventilation and air-conditioning services, as well as for anchors and concrete testing samples.
Event construction
Stages, dance floors, tents, rain canopies and frames for events, including individual solutions for occasions and garden parties.
Trust & reputation

ranQ Trust Score of SIEGIN GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

SIEGIN GmbH scores 53.3 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.58.324%
  • 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.55.910%
  • 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%
SIEGIN GmbH scores 89.7 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.82.07%
SIEGIN GmbH 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%
SIEGIN GmbH scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SIEGIN GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 8 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
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle48
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Dillackerstrasse 15
4142 Münchenstein
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-110.040.326
Founded
2003 · 23 years
Last commercial register change
March 12, 2010
Employees
21 to 50
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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