Most, if not almost all, investment managers — prodded by their own altruistic motives as well as by the insistence of their investor clientele — have adopted sustainable development and building management policies and practices. But the work of creating sustainable built environments is never done. New challenges as well as new technologies ensure that, to be effective in the long run, any policies and practices put in place need to be as dynamic as possible to adapt to the requirements of an ever changing physical and technical environment.