The revitalisation of the Westraven office building in Utrecht, some twenty years ago, reflected the user's values of the time: openness, professionalism and sustainability. With new cladding, among other things, cepezed blew new life into the closed colossus from the 1970s. Currently, we are working on a similar step. This time also the capacity needs to increase and the lay out has to facilitate meetings, cooperation and flexible workplaces. Also the plan aims for a more extensive sustainability.