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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryFontnasJJ Holzbau GmbH
JJ Holzbau GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of JJ Holzbau GmbH is the manufacture and processing of wood products, particularly the production of furniture, kitchens and other woodwork, as well as the provision of services in the field of wood construction.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered10
Timber construction work
Timber construction work from planning to completion, including element construction, roof trusses and roof structures, timber facades, interior fit-out, as well as new builds, extensions and conversions.
Conversions and renovations
Conversions and renovations from a single source, including coordination of the trades involved and professional implementation of conversion projects.
Joinery work
Joinery work for various furniture, kitchens, doors, floors, tables and cabinets.
Carpentry work
Carpentry work such as classic timber carpentry, roof work, facades and staircases.
Element construction
Element construction for new builds and extensions, as well as larger timber construction projects.
Renovation of mountain huts and maiensäss
Renovation of mountain huts and maiensäss, including sites that are difficult to access and projects carried out with helicopter transport.
Service and repair work
Repairs of all kinds, such as broken glass, torn-off hinges, faulty door locks, water damage and making doors usable again.
Terrace, balcony and pergola construction
Terraces, balconies and pergolas as individual timber construction work for outdoor areas.
Insulation and energy improvements
Insulation and energy improvements in connection with timber construction, conversion and renovation projects.
Custom special fabrications
Custom special fabrications according to customer requirements in timber construction.
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3.9/5

JJ Holzbau GmbH

Trust & reputation

ranQ Trust Score of JJ Holzbau GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

JJ Holzbau 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%
JJ Holzbau 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%
JJ Holzbau 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%
JJ Holzbau GmbH scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

JJ Holzbau 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.

Knowledge

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Location

Dorfstrasse 17
9476 Fontnas

At a glance

Legal form
Limited Liability Company
UID
CHE-115.055.246
Founded
2009 · 17 years
Last commercial register change
February 14, 2011
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.
88.0
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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