Guardian: When a building-owner or developer wants to demonstrate that their new building is as sustainable as possible, they will often cite a BREEAM rating such as 'Excellent' or even 'Outstanding'. Is it really true that these non-domestic buildings are reaching the highest standards of sustainability? BREEAM is an environmental assessment methodology that was set up over 20 years ago by the Building Research Establishment, the former government-funded research laboratory for research into buildings. At...