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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceZuzwil SgGrand Reinigung GmbH
Grand Reinigung GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grand Reinigung GmbH provides building cleaning services for private and commercial clients. Services include office cleaning, maintenance cleaning, window and carpet cleaning, move-out and construction cleaning, and property caretaking.

AI-generated
Offering

Products & services

Industry:Building Maintenance
✓ Offered7
Move-out cleaning with handover guarantee
Move-out cleaning for apartments with handover guarantee, including thorough final cleaning for property handovers.
Maintenance cleaning
Recurring cleaning work for private apartments and commercial premises, also available as a subscription system.
Office cleaning
Cleaning for offices, industrial buildings, practices, restaurants and banks in commercial environments.
Construction cleaning
Cleaning after construction and renovation work, including thorough final cleaning of premises.
Window cleaning
Cleaning of windows and glazing for residential and commercial properties.
Household cleaning
Cleaning of households, as spring cleaning or on a regular basis with a subscription system.
Carpet cleaning
Deep cleaning of carpets using spray extraction, including heavily soiled carpets and carpet-covered stairs.
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3.9/5

Grand Reinigung GmbH

Trust & reputation

ranQ Trust Score of Grand Reinigung GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Grand Reinigung GmbH scores 54.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.56.824%
  • 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.52.910%
  • 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.50.08%
Grand Reinigung GmbH scores 86.7 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.70.07%
Grand Reinigung GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Grand Reinigung GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grand Reinigung GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.9 out of 5 stars from 7 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
3.9
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle3.97
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Herbergstrasse 29
9524 Zuzwil Sg

At a glance

Legal form
Limited Liability Company
UID
CHE-452.155.600
Founded
2011 · 15 years
Last commercial register change
October 6, 2011
Employees
11 to 20
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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