Abstract-Detailed space use analysis for a building is needed in the near future for building energy efficiency and effective space planning. In this regard, the development of an indoor spatial choice model is indispensable for better space use prediction. However, research efforts into the model are still insufficient in this area. As an initial study, this paper reviews spatial choice behavior, and proposes a conceptual framework that displays the necessary development steps, behavioral rules, and required data for developing indoor spatial choice model. Finally, future opportunities and challenges are discussed.Index Terms-Occupant behavior, space use analysis, spatial choice model, space planning.