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

About the company

The core activity of STAMM AG is the provision of services in the field of property maintenance, particularly in the areas of: housekeeping (including cleaning, minor repairs, technical inspections), garden maintenance (including lawn mowing, lawn care, planting and pruning, hedge trimming), high-pressure cleaning, dehumidification, carpet cleaning, and window cleaning. The company thus offers a comprehensive service package for the maintenance and care of properties.

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Offering

Products & services

Industry:Building Maintenance
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4.2/5

A. Stamm AG

✓ Offered6
Building caretaking A–Z
Building caretaking for properties, surrounding area cleaning, cleaning of entrances, stairwells, basements and ancillary rooms, parking garage cleaning, technical inspections, minor repairs, winter service, coordination with tradespeople.
Garden maintenance
Maintenance of house gardens and green areas, care of flowerbeds, weeding, mowing lawns, cutting shrubs, flower perennials and hedges, maintenance of biotopes as well as tree and shrub care.
High-pressure cleaning
Cleaning of heavily soiled outdoor surfaces, in particular parking garages, exterior staircases, concrete slabs, terraces, walls and façades.
Window cleaning
Window cleaning with osmosis purified water for shop windows, winter gardens, office windows, fixed glazing, balcony and terrace glazing up to 12 metres in height, as well as solar installations.
Carpet cleaning
Carpet cleaning with pick-up and delivery service or cleaning of wall-to-wall carpets on site; professional deep carpet cleaning.
Dehumidification
Gentle dehumidification for moisture damage or water damage, as well as rental of portable small units and high-performance dehumidifiers.
Trust & reputation

ranQ Trust Score of A. Stamm AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

A. Stamm AG scores 68.0 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.61.824%
  • 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.74.910%
  • 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.78.08%
A. Stamm AG scores 89.3 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%
A. Stamm AG 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%
A. Stamm AG scores 8.9 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 35.8.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A. Stamm AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.2 out of 5 stars from 18 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
4.2
of 5

Aggregated from 18 reviews across all connected sources

Sources
GGoogle4.218
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Alte Winterthurerstrasse 11B
8309 Nürensdorf
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.415.697
Founded
1995 · 31 years
Last commercial register change
March 10, 2025
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.
100.0
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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