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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryMärstettenSommerhalder Holzbau AG
Sommerhalder Holzbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sommerhalder Holzbau AG is the planning and execution of timber construction projects, including new buildings, renovations, prefabricated construction, timber frame restoration, staircase construction, wood and parquet flooring, as well as maintenance and repairs.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered7
Timber construction
New builds, conversions, extensions, timber-frame erections, roof trusses and wood cladding; planning and assembly from a single source, including for projects with architects.
Timber element construction
Individually planned and prefabricated timber element buildings from planning to erection; on request with windows, wiring and power sockets.
Timber-frame building restorations
Renovation of timber-framed buildings with reclaimed timber for the restoration of old building fabric; preservation of historic buildings with solid timber construction expertise.
Conversion and renovations
Careful conversions and renovations, minor repairs and the restoration of entire timber-frame buildings; replacement only where necessary.
Staircase construction
Individually designed staircases for functional and aesthetic solutions, from simple designs to unconventional staircases according to customer requirements.
Wood and parquet flooring
Wood and parquet flooring for individual living styles and a pleasant indoor climate; selection of different wood types and design options.
Maintenance and repairs
Minor repairs and service work on windows, panes, roof windows, shading systems and timber components; support for DIY projects and material selection.
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4.2/5

Sommerhalder Holzbau AG

Trust & reputation

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

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Sommerhalder Holzbau AG scores 71.3 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.70.08%
Sommerhalder Holzbau AG scores 92.3 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.82.07%
Sommerhalder Holzbau AG scores 83.3 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).83.322%
Sommerhalder Holzbau AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sommerhalder 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

Hubstrasse 5
8560 Märstetten
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-110.309.793
Founded
2003 · 23 years
Last commercial register change
January 21, 2013
Employees
21 to 50
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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