Businesses that seek to occupy premium or grade A office accommodation are traditionally seduced by the next big thing. What was once a bespoke architectural design, then became an icon, a taller building, one made of glass and finally the inevitable iconic, tall, glass tower. Now it seems a good number of those businesses have moved on to green buildings as a must have upgrade to the skyscrapers of glass and steel. Green, it appears, is the new black. But is that really the next big thing or is being green merely the last big thing? Even worse, does going green in terms of building design actually deliver the types of benefits that an occupier or landlord was anticipating, beyond the significance of branding and an alignment with grade A quality office space? The green building narrative is a particularly powerful one and the growth of LEED and BREEAM rated buildings over the last decade is proof of that power.