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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceAu SgDienst-Leistung & Service GmbH
Dienst-Leistung & Service GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company DLSG offers comprehensive services in the field of construction, including renovation, rehabilitation, restoration and preservation of real estate. The core activity of the company includes the planning, execution and supervision of construction projects, including the coordination of work such as masonry, flooring and other craft activities. The company positions itself as a full-service provider, accompanying customers from the initial idea to the handover of the completed project.

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Offering

Products & services

Industry:Building MaintenanceFlooring & Tiling
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4.0/5

Dienst-Leistung & Service GmbH

✓ Offered11
Construction company
Alterations, bathroom and kitchen renovations, plastering work, garden and retaining walls, fire stop systems as well as façade renovations, crack repairs, concrete rehabilitation and external wall insulation.
Home renovation
Home renovations with renovation concept, bathroom service, kitchen service, floor and window renovations, wall work, lighting solutions, electrical installations, as well as heating and cooling systems.
Renovation of old buildings
Conversion, renovation and refurbishment work on older buildings, including renovation concept, project coordination, attic conversion, floor rehabilitation and expansion of living space.
Drywall construction
Drywall construction for walls, ceilings and attic spaces, including partition walls, sound-insulating walls, fire-protection walls, suspended ceilings and sound-insulating ceilings.
Floor coverings
Floor coverings and flooring work with wood, ceramic and natural stone, including installation, renovation, sanding parquet and floor rehabilitation.
Fire protection & renovation
Fire protection works in renovation projects including fire stops, fire-protection ceilings, fire doors, firewalls, cable and installation ducts, and other special constructions.
Barrier-free bathroom
Barrier-free bathroom renovations including floors, windows, walls, lighting solutions, electrical installations, heating/cooling systems, and barrier-free execution of all work.
Age-friendly renovation
Age-friendly refurbishments of living space with consulting, on-site inspection, assessment of existing conditions, renovation proposals, budgeting and equipment designed for barrier-free use.
Shading / sun protection
Planning and installation of sun-shading systems for indoor and outdoor areas, in particular roller shutters, louvre shutters and retrofit shading solutions.
Organising and planning
Client consultation, client representation, project leadership, site supervision, project management, quality assurance, acceptances, commissioning and maintenance contracts for companies.
Renovations for rental apartments
Renovations for rental apartments and properties including repairs, floor refresh, silicone joints, mould treatment and repair of defective kitchen furniture.
Trust & reputation

ranQ Trust Score of Dienst-Leistung & Service GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Dienst-Leistung & Service GmbH scores 65.1 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.46.624%
  • 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.85.610%
  • 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.95.08%
Dienst-Leistung & Service 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%
Dienst-Leistung & Service 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%
Dienst-Leistung & Service GmbH scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dienst-Leistung & Service GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.8 out of 5 stars from 28 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
3.8
of 5

Aggregated from 28 reviews across all connected sources

Sources
GGoogle3.828
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hauptstrasse 81
9434 Au Sg
Opening hours
Mon
07:00 - 18:30
Tue
07:00 - 18:30
Wed
07:00 - 18:30
Thu
07:00 - 18:30
Fri
07:00 - 18:30
Sat
09:00 - 12:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-110.301.254
Founded
2003 · 23 years
Last commercial register change
February 18, 2021
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.88.06%
  • 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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