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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryMeilenZimmerei Diethelm GmbH
Zimmerei Diethelm GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is carpentry, particularly the planning and execution of timber construction projects, such as roof structures, facade cladding, terraces, stairs, interior finishing, windows, doors and gates. The company also offers specialized services like element construction, dormer installations and insulation.

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Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered
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3.9/5

Zimmerei Diethelm GmbH

9
Planning
Planning for building projects, detailed and free estimates, wood consultation with samples, plans and 3D animations, support during the construction phase and coordination of small renovations.
Timber construction
Timber construction for new builds and renovations, facades, roof structures, doors and windows, wall and ceiling cladding, as well as lukarnes, dormers and special made-to-measure items.
Element construction
Element construction for extensions and complete new builds, with in-house element construction and cooperation with partners for the complete offering.
Terraces
Installation of terrace joists and wooden decks for outdoor areas, with different levels, seating options and a choice of local or foreign wood species.
Roof windows
Installation of roof windows from start to finish, including manual or electric windows and accessories such as blackout roller blinds and exterior shutters.
Insulation
Insulation for roofs, walls and floors with Isofloc, conventional thermal insulation materials and natural insulation materials such as sheep’s wool or Thermo-hemp.
Stair construction
Stair construction for treads-mounted stairs, stringer-cut stairs, space-saving and screed stairs, including planning and three-dimensional representation.
Floors
Floor build-up from the raw joist layer to the finished parquet floor, including insulation, shimming layer or levelling fill, underlay floor, parquet and laminate.
Fences and privacy screens
Fences and privacy screens made of wood, wire mesh or combinations of the above, with advice on the right solution for outdoor areas.
Trust & reputation

ranQ Trust Score of Zimmerei Diethelm GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Zimmerei Diethelm GmbH scores 53.8 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.70.824%
  • 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.27.910%
  • 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.35.08%
Zimmerei Diethelm GmbH scores 83.5 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.92.512%
  • 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%
Zimmerei Diethelm 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%
Zimmerei Diethelm GmbH scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zimmerei Diethelm GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Seestrasse 1015
8706 Meilen

At a glance

Legal form
Limited Liability Company
UID
CHE-262.969.193
Founded
2014 · 12 years
Last commercial register change
March 27, 2026
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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