What environmental data is required to support BREEAM or LEED credits?

A wide range of environmental data is typically required, depending on the credits being pursued. This can include:

• Indoor air quality (IAQ) testing results
• Energy consumption modelling and performance data
• Water usage calculations
• Materials specifications and sourcing information
• Acoustic performance data
• Lighting levels and daylight analysis

For IAQ specifically, data may include measurements of particulate matter, volatile organic compounds (VOCs), and carbon dioxide levels.

The key thing is that all data must be evidence-based and verifiable, often collected by independent specialists. Documentation and traceability are just as important as the results themselves.