Photography: Ben Blossom

Photography: Ben Blossom


Bureau de Change is an award winning architecture practice founded by Katerina Dionysopoulou and Billy Mavropoulos. Its work is a direct product of the founders' upbringing, passions and experiences - combining the pragmatism and formality of their architectural training with a desire to bring a sense of theatre, playfulness and innovation to the design of spaces, products and environments. The result is a studio where rigorous thinking and analysis are brought to life through prototyping, testing and making.

Within the last four years Bureau de Change has been shortlisted for the New London Architecture awards in 2015, 2016 and 2019, the Architects Journal Awards 2015, the RIBA Manser Medal 2016, the Sunday Times Awards 2019 (2 nominations) and the British Construction Industry Awards 2019.

The studio won Best International Retail Space - World Interior Awards 2015, Best House of the year - Sunday Times Awards 2016, Best House of the year - Harringey Awards 2016, the Silver Medal - London Design Awards 2016, Breakthrough Act of the year - FX Awards 2016 and the Architizer A+ Detail award 2019.


Bartlett graduate Katerina Dionysopoulou trained at Foster+Partners before joining Heatherwick Studio. During this time she led the team designing the UK Pavilion at the Shanghai Expo, winning the coveted Lubetkin Prize. She later worked alongside Danny Boyle as the project leader for the iconic Olympic Cauldron for London 2012. She is a visiting lecturer at Harvard University.

Billy Mavropoulos studied at the Royal College of Art and trained at Foster+Partners. Prior to founding Bureau de Change, Billy worked as an independent design consultant on projects for the Tate Modern, Tate Britain and Selfridges. In 2010 he featured in Wallpaper* magazine’s next generation issue as a designer who will change the face of design within the next 30 years.