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

About the company

Bernhard Sigg, Holzbau, Innenausbau provides carpentry, joinery and interior-construction services, including timber structures, element construction, renovations, facades, kitchens, furniture and staircases. The business also offers timber-construction planning, support for photovoltaic installations, project supervision and planning/calculation services with 3D visualizations.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered5
Timber framing
Timber structures, modular timber construction, conversions & renovations, facades, building envelope retrofits, terrace flooring, roof windows & dormers, roofing.
Joinery
CNC machining, kitchens, furniture, flooring, staircases; made-to-measure joinery work from planning and production through to installation.
Timber construction planning
Planning and concept development of timber construction projects with detailed construction plans, coordination with clients and execution with timber know-how.
Construction supervision
Supervision of construction projects with construction progress monitoring, quality checks and support up to completion.
Solar systems (Photovoltaics)
Integration of solar solutions into construction projects to increase energy efficiency, as well as advice on energy costs and climate protection.
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4.1/5

Bernhard Sigg, Holzbau, Innenausbau

Trust & reputation

ranQ Trust Score of Bernhard Sigg, Holzbau, Innenausbau: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Bernhard Sigg, Holzbau, Innenausbau scores 69.0 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.65.024%
  • 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.63.210%
  • 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.88.08%
Bernhard Sigg, Holzbau, Innenausbau scores 82.2 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%
Bernhard Sigg, Holzbau, Innenausbau 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%
Bernhard Sigg, Holzbau, Innenausbau 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

Bernhard Sigg, Holzbau, Innenausbau reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 11 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
4.3
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.311
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Industriestrasse 27
8240 Thayngen
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-103.830.240
Founded
1986 · 40 years
Last commercial register change
November 2, 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.67.06%
  • 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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