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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureRenovationHerisauAlpha Holz GmbH
Alpha Holz GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Alpha Holz GmbH provides ecological timber construction and interior fit-out services. It advises on, plans and carries out renovations, conversions and interior design projects, handles building applications and site management, and produces furniture, kitchens, doors and cupboards in its own joinery workshop.

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Service area

Offering

Products & services

Industry:Renovation
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4.1/5

Alpha Holz GmbH

Timber construction
Carpenter
✓ Offered6
Advice on building fabric, living space and renovation
Review of the building fabric, clarification of fit-out, renovation, extension or replacement construction, existing condition surveys of agricultural properties, as well as redesign of houses and apartments.
Planning of building permit applications and construction management
Building permit applications, existing condition surveys using 3D scanners, CAD drawings, floor plans, elevations, photorealistic drawings, as well as schedules and site supervision as part of construction management.
Execution of joinery and timber construction works
Kitchens, bathrooms, furniture, cupboards, windows, doors, tables, chairs and interior fit-out, as well as conversions, extensions, roof raises, dormers, staircases and renovations.
Joinery production
In-house workshop production of cupboards, doors, furniture and kitchens in Herisau.
Solid-timber house construction
Walls and insulation made from solid timber, executed without glue.
Solid-wood flooring
Glue-free solid-wood flooring from our own production in various thicknesses, widths and lengths, ready to install directly.
Trust & reputation

ranQ Trust Score of Alpha Holz GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Alpha Holz GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Alpha Holz GmbH scores 77.2 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.86.512%
  • 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.55.07%
Alpha Holz GmbH 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%
Alpha Holz GmbH scores 8.0 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 35.8.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Alpha Holz GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Ifang 3155
9100 Herisau
Opening hours
Mon
07:00 - 12:00, 13:00 - 19:00
Tue
07:00 - 12:00, 13:00 - 19:00
Wed
07:00 - 12:00, 13:00 - 19:00
Thu
07:00 - 12:00, 13:00 - 19:00
Fri
07:00 - 12:00, 13:00 - 19:00
Sat
07:00 - 12:00, 13:00 - 16:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-272.626.406
Founded
2016 · 10 years
Last commercial register change
March 6, 2025
Employees
1 to 10

Active in 1 of 26 cantons

  • ARAppenzell Outer Rhodes
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.
88.0
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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