BREEAM stands for Building Research Establishment Environmental Assessment Method. It determines the sustainability performance of buildings by focusing on three aspects: the building, its management and its use. The three aspects are assessed in nine sustainability categories: management, health, energy, transport, water, materials, waste, land use & ecology and pollution. A score is achieved per aspect ranging from 5 stars for ‘Outstanding’, 4 for ‘Excellent’, 3 for ‘Very Good’, 2 for ‘Good’ and 1 for ‘Pass’.