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

About the company

The core activity of Wirz Holzbau AG is timber construction, particularly carpentry and joinery, including interior finishing, doors and walls, cabinets, latticework and other woodwork.

AI-generated
Offering

Products & services

Industry:Interior ConstructionTimber Construction & Carpentry
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4.3/5

Wirz Holzbau AG

✓ Offered11
Joinery
Interior fit-out, doors of all types, heritage-preserving windows, tailor-fitted built-in wardrobes and made-to-measure furniture.
Timber construction
Timber construction for new builds and renovations, roof structures, element buildings, extensions, façade cladding, attic conversions and staircases.
Interior fit-out
Interior fit-out with walls, sliding doors, partition walls, paneling, curtain boards, window sills, cloakrooms and built-in solutions.
Doors
Manufacture and installation of entrance, apartment, interior, utility-room and fire-protection doors, including historically adapted or heritage-preserving versions.
Window construction
Heritage-preserving windows, window sills and associated timber work for conversions and renovations.
Custom wardrobes and made-to-measure furniture
Tailor-fitted built-in wardrobes, wall cabinets, cloakrooms, shelving and made-to-measure furniture for flats and buildings.
Roof structures and attic fit-out
Erecting, repairing and converting roof trusses, including roof windows, dormers, insulation and structural adjustments.
Extensions and element construction
Planning and execution of extensions in timber element construction with interior wall, exterior wall and ceiling elements.
Façade cladding
Installation of timber façades, exposed boarding and façade cladding with insulation and substructure.
Renovations
Renovation of existing timber and roof structures, including in listed heritage or buildings worth preserving.
Stairs
Manufacture and installation of wooden staircases, space-saving stairs and stair systems with matching handrails and fittings.
Trust & reputation

ranQ Trust Score of Wirz Holzbau AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Wirz Holzbau AG scores 70.1 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.58.610%
  • 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.100.08%
Wirz Holzbau AG scores 94.3 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.90.07%
Wirz 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.
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).85.022%
Wirz Holzbau AG scores 65.7 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 35.65.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wirz Holzbau AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.3 out of 5 stars from 9 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 9 reviews across all connected sources

Sources
GGoogle4.39
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Freiburgstrasse 359
3018 Bern
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-110.351.588
Founded
2003 · 23 years
Last commercial register change
September 8, 2026
Employees
51 to 100
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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