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

About the company

The core activity of Holzbau Ostschweiz GmbH is the planning and execution of timber construction projects, particularly in the areas of: carpentry, terrace construction, terrace roofing, carport construction, pergola construction, garden house construction, garden seating area construction, dry construction, wooden façades, roofing work, roof renovation, roof inspection, skylight installation, renovation, and conversion. The company offers individual solutions for these projects and also creates 3D models for visualizing the planned work.

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Offering

Products & services

Industry:Timber Construction & Carpentry
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4.0/5

Holzbau Ostschweiz GmbH

✓ Offered5
Decking
WPC, thermally modified ash and larch decking including substructure, slope, drainage, edge details and renovation of existing terrace surfaces.
Timber terrace roof
Timber terrace roofs for patios and seating areas, including installation, replacement on existing buildings, roof covering, junctions and drainage.
Carport / shelter
Custom timber carports and vehicle shelters with site measurement, structural design, permit support, prefabrication, installation, foundations and drainage.
Timber garage
Timber-frame garages, freestanding or attached to the house, with foundations, doors, roof, insulation, windows and storage space.
Small jobs
Small timber work on houses, gardens and existing buildings, including repairs, modifications, small extensions and interior or exterior fittings.
Trust & reputation

ranQ Trust Score of Holzbau Ostschweiz GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Holzbau Ostschweiz GmbH scores 77.5 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.80.624%
  • 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.55.910%
  • 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.95.08%
Holzbau Ostschweiz GmbH scores 65.0 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.58.012%
  • 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%
Holzbau Ostschweiz 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%
Holzbau Ostschweiz GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Holzbau Ostschweiz GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 8 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 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hauptstrasse 23
9656 Alt St. Johann
Opening hours
Mon
08:00 - 19:00
Tue
08:00 - 19:00
Wed
08:00 - 19:00
Thu
08:00 - 19:00
Fri
08:00 - 19:00
Sat
08:00 - 19:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-301.825.393
Founded
2022 · 4 years
Last commercial register change
October 13, 2025
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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