CASBEE (Comprehensive Assessment System for Built Environment Efficiency) is a Japanese assessment and certification tool for buildings that covers:

• Energy efficiency
• Resource efficiency
• Local environment
• Indoor environment. 

Four CASBEE assessment tools serving at each stage of the design process

• CASBEE for Pre-design;
• CASBEE for New Construction;
• CASBEE for Existing Building; and
• CASBEE for Renovation.

Each tool is intended for a separate purpose and target user, and is designed to accommodate a wide range of uses (offices, schools, apartments, etc.) in the evaluated buildings.There is also a CASBEE accredited Professional Registration System for specialized engineers with expertise and knowledge in the comprehensive environmental performance evaluation of buildings who attend a special training course and take an exam to become accredited.