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.