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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesGrenchenh. strahm baugeschäft gmbh
h. strahm baugeschäft gmbh Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the execution of renovation and restoration work in the construction industry, including painting, plastering, drywall and masonry work. The company also provides services such as drying and support for builders in the planning and execution of construction projects.

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Offering

Products & services

Industry:Specialized Construction Activities
✓ Offered9
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3.9/5

h. strahm baugeschäft gmbh

Construction management
Construction management for construction projects, support in implementing customer wishes, and coordination of the work from a single source.
Plastering work
Plastering work for various construction projects, including carrying out all related work.
Masonry work
Masonry work for residential buildings and other construction projects, with special focus on careful execution in the existing home.
Breaking-out/demolition work
Breaking-out and demolition work, in particular removing walls and other obstructive building components.
Core drilling
Core drilling according to customer requirements for conversion and construction projects.
Tiling work
Tiling work with ceramic and natural stone tiles according to customer requirements.
Asbestos work
Asbestos analyses and coordination of asbestos remediation if required.
Painting work
Painting work from the basement to the facade and up to the attic floor.
Structural checks
Structural checks and organisation of potential further measures with an engineer.
Trust & reputation

ranQ Trust Score of h. strahm baugeschäft gmbh: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

h. strahm baugeschäft gmbh scores 55.9 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.53.824%
  • 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.49.510%
  • 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.70.08%
h. strahm baugeschäft 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%
h. strahm baugeschäft 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%
h. strahm baugeschäft gmbh scores 4.0 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 35.4.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

h. strahm baugeschäft gmbh reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.7 out of 5 stars from 6 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
3.7
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle3.76
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Simplonstrasse 58
2540 Grenchen
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.307.413
Founded
2009 · 17 years
Last commercial register change
December 17, 2019
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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