Based on 4 codesign cases and 15 designer interviews, this article presents how territorial design serves as a catalyst for shared values in community living. Examining user experience and design goals, it reveals how ethological and political values shape territories and the design process. Participants explore new work methodologies, redefine collective activities and navigate in tensions, power issues and political dimensions. The codesign space transforms political interactions, shifting from controversy to conception, offering a new experience and perspective on territorial discussions.