OSE: three letters, three names, three paths. Olivia, Sébastien, Emmanuel — three architects whose initials form a meaningful acronym: OSE (which in French also means “dare”). Dare to innovate, dare to collaborate, dare to rethink architecture as a driver of social and environmental transformation.

We met during our studies and became friends. Over the past 25 years, each of us has developed our own practice and professional journey. In recent years, our collaborations — O with S, S with E, O.S.E together — have confirmed what had become obvious: the fluidity, enjoyment, and quality of the projects we carry out as a team. Building on that chemistry, we decided to formalize this dynamic within a shared structure: OSE architecture, founded in 2024.

Our team, based near Etterbeek station, has grown with the arrival of Emilien, Romane, Maxime, and Giulia. Together, we form a motivated, experienced, and complementary collective, ready to take on ambitious and demanding challenges. 


Ose architecture

Org chart

Teams

Offices

Ose architecture

Org chart

Teams

Offices

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