This paper engages with the idea that interior design is a performative practice. The central question of interest is dramaturgical rather than instrumental: How do building interiors “act” and how do these performances construct a particular definition of the situation? We critically bring into play related academic discussions of “political interiors” and “the good organization” by exploring the built environment of the court of law. The good organization is an ideal‐type used to help identify and understand the deficiencies of actual organizations. We show that ontological politics is at work when performative design enables problematic realities. This study relied on a microethnographic research method using participant observation as the data collection strategy. It focused on a Canadian interior design project that implemented a workplace violence assessment in the criminal courtrooms of the Nova Scotia justice system. We use theatrical performance as a research lens, drawing on dramaturgy, as a fruitful way to engage with the concept of political interiors. This expands beyond mainstream epistemological assumptions about the grounds for knowing. We find that criminal courtrooms, as the physical expression of the good organization, are rooted in questionable design assumptions that are seldom examined. The nominalist stance in this paper promotes a more complete understanding of the realities of interior space that are socially constructed through physical settings that create, preserve, and promote hierarchy, personal stigma, and theatricality.