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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceZurichUmbau-Allrounder GmbH
Umbau-Allrounder GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Umbau-Allrounder GmbH provides construction and building services with a focus on renovations, refurbishments, building services engineering, caretaking, roofing, landscaping, and painting and plastering work. The company supports projects from planning through execution and property maintenance.

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Products & services

Industry:Building Maintenance
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3.9/5

Umbau-Allrounder GmbH

5
Alterations & Renovation
Alteration and renovation projects covering interior and exterior build-outs, kitchen, bathroom or heating; site survey, damage analysis, planning, demolition work, masonry work and construction execution.
Building services & maintenance
Consulting, installation, maintenance and repair of building services; support for heating, sanitary, electrical and ventilation, as well as building caretaker services, cleaning, minor repairs and property inspections.
Roof construction & roofing
Planning, new build, refurbishment, modernization, maintenance and care of roofs; work on flat and pitched roofs as well as cleaning of gutters, downpipes and skylights.
Plastering and painting work
Painting work indoors and outdoors, wall and ceiling cladding, plastering and render finishing, drylining as well as restoration of stucco work and prefabricated mouldings.
Landscaping & garden work
Planning, construction and care of outdoor facilities and gardens; garden maintenance, upkeep of surroundings, design of open spaces, paths and squares, lawn care, hedge trimming and indoor greening.
Trust & reputation

ranQ Trust Score of Umbau-Allrounder GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Umbau-Allrounder GmbH scores 61.2 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.60.724%
  • 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.40.910%
  • 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%
Umbau-Allrounder GmbH scores 77.8 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.79.212%
  • 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%
Umbau-Allrounder 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%
Umbau-Allrounder 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

Umbau-Allrounder 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 4 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
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle44
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Friedackerstrasse 37
8050 Zurich
Opening hours
Mon
08:00 - 17:30
Tue
08:00 - 17:30
Wed
08:00 - 17:30
Thu
08:00 - 17:30
Fri
08:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-195.272.916
Founded
2018 · 8 years
Last commercial register change
September 21, 2018
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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