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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichCorak AG
Corak AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Corak AG encompasses the provision of services in the construction and real estate industry, particularly in the areas of: building physics and structural monitoring, structural planning and façade systems, condition assessments and defect rectification, energy-related and material-specific issues, microbiological investigations in residential and commercial spaces, laboratory analyses for mold testing, air germ pollution and hygiene controls, specialized planning, measurements and compliance testing, and owner representation and quality assurance. As an independent and neutral service provider, the company operates two business divisions: Engineering and Diagnostics.

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Corak AG

Industry:
Technical Consulting & Engineering
✓ Offered11
Building Physics
Evidence, consulting and simulations for energy efficiency, thermal, sound and noise protection, indoor climate, airtightness as well as Minergie and SIA requirements.
Quality Assurance
Construction-accompanying inspections and tests of planning, execution and acceptance, including contract review, defect checks, test reports and follow-up verification of remedial work.
Condition Assessments
Investigation and assessment of façades, roof structures, masonry and structural elements, including damage analysis, refurbishment concepts, remaining service life and detection of leaks.
Construction Expertises
Technical analyses of components and structures, technical investigations as well as court expert reports and party opinions.
Structural Engineering Design
Structural design and assessment of structures and façades, including constructive advice for concrete, steel and timber structures as well as façade systems.
Building Monitoring
Preventive measurements and monitoring of structures to document safety and to identify changes at an early stage.
Indoor Climate and Contaminant Assessments
Assessment of indoor climate and contaminants with measurements of temperature, humidity, airborne pollutants, fine dust, draughts and microbial air contamination.
Microbiology
Investigation of microorganisms on site and in the laboratory in relation to building-related issues and damage patterns.
Specialist Planning
Detailed planning and technical concepts for energy retrofits and complex special structures.
Client Representation and Project Management
Representation of the client's interests, coordination of complex construction processes, and ensuring schedule, cost and quality objectives.
Compliance
Monitoring of regulations, standards and contracts during the construction process to minimize risk and avoid unnecessary refurbishments.
Trust & reputation

ranQ Trust Score of Corak AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Corak 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%
Corak AG scores 85.5 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.55.07%
Corak AG 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%
Corak AG scores 12.9 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 35.12.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Corak 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 October 2026.

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

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Location

Hier entsteht die Karte
Rautistrasse 60
8048 Zurich

At a glance

Legal form
Corporation
UID
CHE-107.894.463
Founded
2007 · 19 years
Last commercial register change
February 6, 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.
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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