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

About the company

The core activity of Tschann Holzbau GmbH is timber construction, particularly the planning and execution of new buildings, conversions, renovations and refurbishments of buildings, as well as the manufacture and processing of wood products such as doors, windows, stairs and furniture.

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Offering

Products & services

Industry:Timber Construction & Carpentry
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3.7/5

Tschann Holzbau GmbH

✓ Offered11
Timber framing
Timber construction for new builds, roof trusses, halls, carports and element construction; also conversions, extensions and renovations of existing buildings.
Stair construction
Custom wooden staircases, straight or spiral, with an intermediate landing; if needed, also renovation of existing staircases.
Construction joinery
Manufacture, renovation and installation of doors and gates as well as tables made from new or old wooden beams.
Conversion / renovation
Renovations, change-of-use projects, as well as renovations and restorations of buildings and components, including façades, windows, doors and roof space.
Energy-efficient renovation
Insulation work with organic and inorganic materials for façades, basements, screeds, attics and individual rooms to regulate the temperature balance.
Roof structures
Roof works for gable roofs and flat roofs in new builds, as well as conversion of the roof space and other timber structures.
Carports
Timber carports as shelters for vehicles and additional everyday items, matched to existing buildings.
Extensions
Additions and building extensions, for example for office spaces, garden-house extensions or larger living and kitchen areas.
Timber element construction
Timber system construction with prefabricated elements for short construction times, energy efficiency, pleasant indoor climate and sustainable building.
Terrace decking grilles
Solid-wood terrace decking grilles for terraces, with robust workmanship and a walkable wooden surface.
Roof windows
Roof windows for more light in the roof space, optionally with a blind or slatted shutters.
Trust & reputation

ranQ Trust Score of Tschann Holzbau GmbH: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 96% · As of October 2026

Tschann Holzbau GmbH 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%
Tschann Holzbau GmbH scores 67.8 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.64.612%
  • 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%
Tschann 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.
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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%
Tschann Holzbau GmbH scores 10.9 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 35.10.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tschann Holzbau GmbH reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». 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.

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Location

Unterlangnau 13
9562 Märwil
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-197.823.595
Founded
2021 · 5 years
Last commercial register change
October 7, 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.
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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