Building Environmental Assessment Method (BEAM) Plus is a comprehensive environmental assessment tool for buildings which is carried out on a voluntary basis. It defines the best practice criteria for a range of sustainability issues across the whole life cycle of buildings and projects, such as how buildings shall be designed, constructed and operated, etc. Recognized as one of the world’s leading green building assessment tools, it provides a comprehensive set of performance standards that can be pursued by developers and owners.

BEAM Plus Existing Buildings Version 3.0 (EB v3.0), owned and operated by the BEAM Society Limited (BSL), is a rating tool that falls under the BEAM Plus framework. It specifically focuses on the management, operation, maintenance, and environmental performance of existing buildings. It aims to reduce the environmental impacts of existing buildings whilst improving quality and user satisfaction by the adoption of the best techniques available. It also drives the society to achieve carbon neutrality.