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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceNiederwil SgSommer GmbH
Sommer GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sommer GmbH is the provision of services in the field of property management, including demolition, renovation and similar activities.

AI-generated
Offering

Products & services

Industry:Building Maintenance
✓ Offered9
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4.1/5

Sommer GmbH

Building caretaking
Building caretaking, maintenance work, winter service, technical service, repairs, exterior and interior cleaning, grounds work, maintenance and reinstatements.
Demolition and dismantling work
Demolition work and dismantling of kitchens, shower and bathrooms, garden sheds, walls and floors, as well as clearing and complete strip-outs.
Renovations and conversions
Renovations, conversions, kitchen conversions, bathroom conversions, WC and shower renovations, as well as conversion coordination and site management.
Painting and plastering work
Painting work, plastering work, rendering work and new base coats, as well as finishing render in interior and exterior areas.
Garden and landscaping work
Lawn mowing, hedge trimming, garden care, removing weeds, caring for and trimming shrubs, reseeding, fertilising and scarifying.
Tiling and floor coverings
Floor and tile coverings, parquet and laminate installation, porcelain stoneware floors, wall and floor tiles, as well as terrace flooring and seating areas.
Assembly and repair work
Repairs, maintenance and restoration, replacement of household appliances, lighting, electrical installations, and various small jobs in the home.
Waste disposal and transport
Waste disposal and transport with box vans and tip trailers for various materials and items.
Advisory and coordination
Personal on-site advisory, appointment scheduling, finding solutions, as well as coordination and site management for conversions and kitchen conversions.
Trust & reputation

ranQ Trust Score of Sommer GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Sommer GmbH scores 74.7 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.79.424%
  • 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.88.08%
Sommer GmbH scores 75.7 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.83.012%
  • 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%
Sommer 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%
Sommer GmbH scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sommer GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 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
5
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Talwis 707
9203 Niederwil Sg
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:30
Tue
07:30 - 12:00, 13:15 - 17:30
Wed
07:30 - 12:00, 13:15 - 17:30
Thu
07:30 - 12:00, 13:15 - 17:30
Fri
07:30 - 12:00, 13:15 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-340.397.633
Founded
2017 · 9 years
Last commercial register change
January 19, 2023
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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