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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior fit-outOberbalmSchwarz Holzbau AG
Schwarz Holzbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Schwarz Holzbau AG is a timber construction company offering carpentry, joinery, interior finishing and roofing services, as well as consulting, planning and structural/building-physics support. The company carries out new construction, conversions and renovations, including energy-efficiency measures, for residential, office, commercial, industrial and agricultural buildings, as well as listed structures.

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Service area

Offering

Products & services

Industry:Interior fit-out
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4.0/5

Schwarz Holzbau AG

Timber construction
✓ Offered6
Carpentry
Timber construction, prefabricated timber-frame construction, and carpentry work for new builds, conversions, and renovations; roof trusses, carports, and other timber components.
Joinery / construction joinery
General joinery work, repairs, kitchen building and service, made-to-measure furniture, made-to-measure doors, standard doors, and burglary protection.
Interior fit-out
Interior fit-out for residential, office, commercial, and industrial buildings, as well as agricultural and listed buildings, including as part of renovations and conversions.
Roofing
Roofing works, re-covering, re-roofing and renovation, underlayments, installation of roof windows, insulation, and referral of solar systems.
Advisory / planning
Advice, planning, and project support from requirements definition through the architectural phases to handover ready to use; assessment of the feasibility from a timber-construction standpoint.
Structural analysis / building physics
Structural analysis, structural engineering design, building physics, as well as sound and fire protection for engineered timber construction and supplementary timber construction elements in steel and solid construction.
Trust & reputation

ranQ Trust Score of Schwarz Holzbau AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

Schwarz Holzbau AG scores 64.3 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.67.124%
  • 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%
Schwarz Holzbau AG scores 74.3 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.58.012%
  • 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%
Schwarz Holzbau AG scores 86.7 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).86.722%
Schwarz Holzbau AG 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

Schwarz Holzbau AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.47
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Borisriedstrasse 11
3096 Oberbalm
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-164.525.317
Founded
2022 · 4 years
Last commercial register change
May 31, 2022
Employees
21 to 50

Active in 1 of 26 cantons

  • BEBern
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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