Bollhalder Walser Architektur is led by Raphael Bollhalder, Christian Walser and Markus Bollhalder, with support from August Eberle. In 1981 Markus Bollhalder and August Eberle founded the architecture office bearing their own names in St. Gallen. In 2009, Raphael Bollhalder and Christian Walser joined the team, and have been members of the board since 2013. A second studio was opened in Zurich in 2011. Reflecting this generational change, in 2023 Bollhalder Eberle Architektur was renamed Bollhalder Walser Architektur.