The core activity of CAAB GmbH encompasses three main areas:
1. **Architecture**: The company provides architectural services, indicating that it deals with the planning, design, and implementation of construction projects.
2. **Construction Management**: CAAB GmbH also assumes responsibility for managing construction projects, which includes coordinating and monitoring construction work, controlling costs and deadlines, and ensuring quality.
3. **Real Estate**: Additionally, the company is active in the real estate sector, which may include brokerage, management, and development of properties.