This essay explores the space of performance art within the critical discourses of spatial dialectics and actor-network-theory to consider how performance space can itself be considered an actant in the event of performance art. Analysing specific performances within Kaldor Public Art Projects #27: 13 Rooms 2013, I reflect upon the ways these performances address how we shape and negotiate individual and collective space. Performance art practice is positioned at the forefront of this activity, seen as providing an alternative framework for reimagining and redistributing spatial relations through form, content and context. Thus, the space of performance art is cast as vital to performance art, a productive performer in its own right, exerting its own force of intelligibility and habituation.