Computational design, an overarching theme pervading architectural practice and research, has instigated profound transformations in our perception of space. Although computational design practices have gained significant prominence in architectural production, it is essential to thoroughly analyze their consequences on our understanding and imaginations of space. This research endeavors to explore the alterations that have occurred in our conceptualization of space within computational design practices, while also scrutinizing what aspects are retained, adapted, or disregarded from our understanding of space. This study seeks to comprehend how designers conceptualize space by conducting interviews with experienced practitioners with a specific research agenda in mind. The resulting interview data is subjected to qualitative thematic analysis. The research focuses on two key inquiries: How architectural space is imagined in computational design practice? How is architectural space considered as a multi-layered, loosely defined, and ineffable concept in computational design approaches in which procedures are precise, descriptive, and prescriptive? The infiltration of computational terminology into architectural discourse appears to exert influence not only on designers' verbal expression but also on their cognitive processes concerning architectural space. It is argued that computational tools impact designers' thought processes and spatial imagination, as well as the parameters they consider. The underlying assumption is that space, as a multi-faceted and multi-significant concept, encompasses both computable and non-computable aspects, warranting exploration into how computational practice accommodates these dimensions. While computation may offer as a appropriate medium for contemplating and representing the quantifiable aspects of space, the ineffable and ambiguous aspects emphasizes the limitations of computability. Findings imply that the topic of space and its relationship with computational design tools is not a primary focus or a significant area of attention in the current context.