In 2002, architects and fellow students David Van Severen, who worked at Neutelings Riedijk Architects, and Kersten Geers, started working for Stéphane Beel and Xaveer de Geyter, the OFFICE architect firm Kersten Geers, David Van Severen. One of their first designs, OFFICE 2: Entrance was for a notary in Antwerp. In the early days the duo started a collaboration with photographer Bas Princen to turn off the visual style of the office.

In 2005, the agency designed OFFICE 15: Border Crossing to mark the architectural competition "Build the Border Wall". As an alternative idea for a border crossing between the United States of America and Mexico, they draw a garden that is walled with white, nine-meter high walls. Inside the walls are palm trees planted in a grid and pavilions for passport control and administration. The design is awarded the first prize.

OFFICE Kersten Geers In 2007 David Van Severen designed the Handelsbeurs bridge on the Kouter in Ghent. The bridge runs over the Ketelvaart and connects the terrace of the Handelsbeurs with the Ketelvest. For this design, the office was awarded the Belgian Architecture Prize in 2009 in the Public Space category.

For the 2008 Architecture Biennial in Venice, OFFICE designed the Belgian pavilion. With After the Party (1907-2007) the agency brought an ode to the Belgian pavilion that had turned 100 years ago, but had not had a party. Two years later, OFFICE received the Silver Lion in Venice for the most promising young architects.

In 2014, the architectural office was declared the winner of an architectural competition for the new building of the Swiss French-speaking broadcaster Radio Télévision Suisse. The new broadcasting building will be located in the city of Lausanne on the campus of the Technical University and Université de Lausanne.

OFFICE appears in October 2014 on a shortlist of five teams for the design of the new VRT building. In 2015, an episode of the Reyers 2020 Canvas series will be dedicated to the agency and their design. Ultimately, the Robbrecht & Daem architectural firm wins the competition.

In 2016, OFFICE was appointed as the curator of the Biennale Interieur in Kortrijk. That year there is an exhibition on the work of OFFICE Kersten Geers David Van Severen from March to May in the Brussels museum BOZAR. The retrospective exhibition Everything Architecture shows models and drawings together with artworks that are related to the style and idea of the office.