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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsWinterthurgraf.construction GmbH
graf.construction GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

graf.construction GmbH provides construction management and client advisory services. The website also lists site supervision, construction, concept development, and fire protection planning as areas of work.

AI-generated
Offering

Products & services

Industry:Architecture FirmsConstruction & Project ManagementOwner's Representative
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3.4/5

graf.construction GmbH

✓ Offered5
Construction Management
Construction management for building projects, including site supervision, planning and coordination of execution, plus support with technical and organisational matters.
Client Advisory Services
Client advisory services for planning, site supervision and owner-side support during design and execution, including technical advice.
Site Supervision
Site supervision for construction projects, with coordination of execution, monitoring of works and coordination between parties and specialist planners.
Design and Project Concepts
Design and project concepts for construction projects, complemented by architectural planning and technical preparation in the early project phases.
Fire Safety Planning
Fire safety planning and building physics services within architecture and construction projects, including technical planning related to quality and safety.
Trust & reputation

ranQ Trust Score of graf.construction GmbH: 3.4 out of 5.0

Trust Score3.4/ 5.0

Solid

x

Data basis 54% · As of October 2026

graf.construction 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%
graf.construction GmbH scores 40.1 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.0.012%
  • 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.55.07%
graf.construction GmbH scores 83.3 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).83.322%
graf.construction GmbH scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

graf.construction GmbH reaches a ranQ Trust Score of 3.4 out of 5.0 — rated «Solid». 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 October 2026.

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

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Location

Espenstrasse 92
8408 Winterthur

At a glance

Legal form
Limited Liability Company
UID
CHE-233.491.516
Founded
2026 · 0 years
Last commercial register change
September 3, 2026
Employees
1 to 10
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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