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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionAltishofenLang Holzbau AG
Lang Holzbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Lang Holzbau AG is the planning, manufacture and assembly of timber constructions, including system and element construction, timber construction planning, interior finishing, staircase construction, facade construction, conversions and renovations, as well as the manufacture of floor coverings and terrace floors.

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Offering

Products & services

Industry:Interior ConstructionTimber Construction & Carpentry
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Lang Holzbau AG

✓ Offered8
Timber construction planning
Timber construction planning for new builds and conversions, including planning, design work, cost estimates, construction management and execution.
System and element construction
System and element construction for new builds and conversions, using frame construction, prefabricated elements and contemporary timber buildings made from regional wood.
Timber structures
Conventional timber structures for residential homes and commercial buildings, made from Swiss wood, executed precisely and carefully.
Interior fit-out
Interior fit-out for new builds and conversions, with insulation, wall and ceiling linings, floor coverings and tailor-made solutions to measure.
Alterations / Renovations
Alterations, repairs, renovations, refurbishments and restorations, including adaptations to existing structures and professional restoration.
Stair construction
Stair construction with planning and execution of individual staircases, including made-to-measure solutions made from local hardwoods.
Facade construction
Facade construction for timber buildings, with execution of facade solutions as a company service within timber construction.
Terrace flooring
Terrace flooring made from sustainably sourced wood, including advice on selection and installation, as well as weather-resistant floor solutions.
Trust & reputation

ranQ Trust Score of Lang Holzbau AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Lang Holzbau AG scores 67.5 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.79.424%
  • 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.52.910%
  • 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.50.08%
Lang Holzbau AG scores 89.3 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.70.07%
Lang Holzbau AG 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%
Lang Holzbau AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lang Holzbau AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 7 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 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Unterdorf 30
6246 Altishofen

At a glance

Legal form
Corporation
UID
CHE-107.803.704
Founded
1985 · 41 years
Last commercial register change
October 3, 2023
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.
100.0
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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