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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryReal EstateCaretaker serviceSirnachSEMI Services GmbH
SEMI Services GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

SEMI Services GmbH is a family-run provider of domestic help and cleaning services. Its services include home, office, building, end-of-tenancy, window and post-construction cleaning, as well as property maintenance.

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Service area

Offering

Products & services

Industry:Caretaker service
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3.9/5

SEMI Services GmbH

Cleaning company
✓ Offered6
Office cleaning
Cleaning of workstations, office furniture, sanitary facilities, kitchens and break rooms; vacuuming, floor care, window cleaning, waste disposal as well as cleaning of entrances and reception areas.
Household cleaning
Cleaning of living rooms, bedrooms, kitchen, bathroom and sanitary facilities; vacuuming, floor care, window cleaning, ironing service, household assistance and cleaning of hard-to-reach areas.
Property maintenance and real estate services
Stairwell cleaning, cleaning of entrance areas and shared spaces, maintenance of outdoor facilities, winter service, checks of technical systems and minor maintenance work.
Move-out cleaning with acceptance guarantee
Kitchen cleaning including appliances, cleaning of bathrooms and sanitary facilities, window and shutter cleaning, cleaning of doors, floors and surfaces, as well as removal of limescale, grease and stubborn dirt.
Glass and window cleaning
Cleaning of windows inside and outside, window frames, shutters, glass surfaces and conservatories for apartments, houses, offices and commercial properties.
Construction cleaning
Removal of construction debris and dust, cleaning of floors and surfaces, window cleaning, sanitary cleaning and final cleaning after construction work or renovations.
Trust & reputation

ranQ Trust Score of SEMI Services GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

SEMI Services GmbH scores 49.0 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.62.524%
  • 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%
SEMI Services 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%
SEMI Services GmbH scores 86.7 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).86.722%
SEMI Services GmbH scores 80.0 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 35.80.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SEMI Services GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle42
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Standbachstrasse 4
8370 Sirnach
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
07:00 - 12:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-114.097.093
Founded
2008 · 18 years
Last commercial register change
February 20, 2014
Employees
1 to 10

Active in 4 of 26 cantons · 4 municipalities

  • TGThurgau
  • SHSchaffhausen
  • SGSt. Gallen
  • ZHWinterthur
  • ZHZurich
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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