Known for his inventive approach to public-realm regeneration, Jan Kattein has built a practice around small-scale but high-impact interventions that blend architecture, social engagement, and sustainability. From high-street revitalisation to community-led placemaking, his work seeks to transform overlooked urban spaces into hubs of activity and opportunity. BD sat down with Kattein in the zinc-clad café at his latest project, the reimagined Church Street Triangle in Lisson Grove, Westminster. 

…