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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding contractorSchattdorfGAMMA AG Bau
GAMMA AG Bau Logo
Verified· 3 sourcesTrust Score
Summary

About the company

GAMMA AG Bau is a construction company active in building construction, civil engineering, scaffolding and renovation. Its services include residential and commercial construction, demolition and dismantling, site works, and drilling and milling.

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Presence

Service area

Offering

Products & services

Industry:Building contractorScaffolding
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GAMMA AG Bau

Excavation
✓ Offered6
Building construction
Residential construction, industrial and commercial construction, anhydrite subfloor systems, bonded reinforcement layers, waterproofing, drilling and milling work, site work.
Civil engineering
Excavation work, dismantling, asbestos analyses and remediation, demolition, infrastructure construction, utility connections, service lines, water engineering, special work, site work.
Scaffolding
Profiling and construction frames, facade scaffolds, fall protection on roofs, emergency roofs, suspended scaffolds.
Renovations
Clear-outs, demolition and strip-out work, drilling and milling work, conversions and renovations, concrete and reinforced concrete work, masonry work, tiling work, plastering work, insulation, waterproofing, anhydrite subfloor systems, bonded reinforcement layers.
Client masonry work
Client masonry work, tiling work, plastering work, insulation, waterproofing, anhydrite subfloor systems, bonded reinforcement layers, site work, drilling and milling work, demolition and strip-out work, clear-outs.
Skip service
Delivery and collection of building materials and construction machinery, disposal of excavated material and construction waste using small Welaki skips and trucks.
Trust & reputation

ranQ Trust Score of GAMMA AG Bau: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of November 2026

Without public customer reviews the score stays capped.

GAMMA AG Bau 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.
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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%
GAMMA AG Bau 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%
GAMMA AG Bau 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%
GAMMA AG Bau scores 47.2 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 35.94.34%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

GAMMA AG Bau 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 58%, 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.

Press

Media

September 18, 2024Media
Gamma AG übernimmt Nachwuchspatronat
urnerzeitung.ch
December 8, 2020Media
Führungswechsel bei der Urner Gamma AG
bote.ch

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Location

Bötzlingerstrasse
6467 Schattdorf

At a glance

Legal form
Corporation
UID
CHE-106.891.982
Founded
1981 · 45 years
Last commercial register change
December 27, 2013
Employees
51 to 100

Active in 6 of 26 cantons

  • Central Switzerland
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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