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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryWangen SzGG Holzbau, Guido Gemperli
GG Holzbau, Guido Gemperli Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of GG Holzbau is timber construction, particularly the planning and execution of timber construction projects for building owners, architects and other timber construction companies.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered5
Timber construction consulting
Timber construction consulting for clients, architects and timber construction contractors; structural solutions, detailed solutions, bill of quantities as well as execution and detail planning in timber construction.
Timber structural engineering
Timber structural engineering for floors, roofs and walls; developing structural solutions for architects or contractors as well as special load-bearing timber structures.
Execution and detail planning in timber construction
Execution and detail planning in timber construction for architects and companies; developing detailed solutions and special solutions in timber.
Bill of quantities for timber construction
Bill of quantities in timber construction for construction projects; preparing tender documents in connection with timber construction, conversions and extensions.
Preliminary clarifications for conversions and extensions in timber construction
Preliminary clarifications for conversions and extensions in timber construction; clarifying structural and design solutions before execution.
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3.8/5

GG Holzbau, Guido Gemperli

Trust & reputation

ranQ Trust Score of GG Holzbau, Guido Gemperli: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

GG Holzbau, Guido Gemperli scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
GG Holzbau, Guido Gemperli scores 78.5 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.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%
GG Holzbau, Guido Gemperli 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%
GG Holzbau, Guido Gemperli scores 48.6 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 35.48.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GG Holzbau, Guido Gemperli reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Leuholz 24
8855 Wangen Sz
Opening hours
Mon
07:00 - 12:00, 13:00 - 18:00
Tue
07:00 - 12:00, 13:00 - 18:00
Wed
07:00 - 12:00, 13:00 - 18:00
Thu
07:00 - 12:00, 13:00 - 18:00
Fri
07:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-108.517.394
Founded
2000 · 26 years
Last commercial register change
June 3, 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.
67.0
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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