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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding contractorDavos GlarisDerungs Bau AG
Derungs Bau AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Derungs Bau AG carries out building and civil engineering work. Its activities include commercial and residential construction, renovations, infrastructure and landscaping, as well as work on utility lines, natural stone walls and water reservoirs.

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Service area

Offering

Products & services

Industry:Building contractorCivil works
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Derungs Bau AG

Renovation
✓ Offered8
Commercial construction
Construction of commercial buildings, tailored to customers’ needs, supported by experienced specialists throughout the entire construction process.
Residential construction
Construction of residential buildings, with support from experienced specialists throughout the entire construction process and execution according to customers’ needs.
Renovation
Renovations of buildings and building refurbishments, based on solid experience from previous work.
Construction project management
Construction project management for construction projects, with support throughout the entire construction process and coordination of implementation.
Special projects
Execution of special construction projects with varying requirements, based on long-standing experience and a broad range of construction services.
Infrastructure construction
Construction of infrastructure, including work on utility lines, reservoirs, pumping stations, bridges, as well as slope and stream protection works.
Above-ground and civil engineering
Above-ground and civil engineering, with work on utility lines, reservoirs, bridges and other construction projects in the above-ground and civil engineering sector.
Landscape design
Landscape design in the surroundings of construction projects, as part of the company’s broad range of services.
Trust & reputation

ranQ Trust Score of Derungs Bau AG: 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.

Derungs Bau AG 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%
Derungs Bau AG scores 89.3 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.70.07%
Derungs Bau 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%
Derungs Bau AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Derungs Bau AG 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

Ortolfistrasse 1
7277 Davos Glaris

At a glance

Legal form
Corporation
UID
CHE-468.627.510
Founded
2011 · 15 years
Last commercial register change
December 5, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • GRGrisons
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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