The BREEAM certification method is the one most widely used throughout the world to assess and improve the environmental performance of buildings. The reference standard covers a wide range of environmental and sustainable requirements, including energy, materials, ground occupancy, health, pollution and transport. The objective with One on One is to attain the BREEAM score of “good”. For its future occupants, this a guarantee of low running costs. It also provides reassurance as to the building’s sustainability and work surroundings that are pleasant, healthy and environmentally-friendly.