CAFOD is an international aid charity running projects in 40 countries around the world. They were operating from a warren of cellular spaces in a series of buildings, but dreaming of headquarters that would become the heart of their organisation. Many members of staff work in disaster zones, so it was essential that when they came together in London they felt a sense of belonging. We conducted inclusive internal focus groups and defined a meticulously detailed brief - not just the technical nuts & bolts - but the emotional, psychological and behavioural changes CAFOD wanted the building to deliver. Half-levels between office floors encourage spontaneous interactions and provoke a vibrant sense of community, while a roof top café has become a hugely popular space for brainstorming and informal meetings.