Dealing with thoughts based on the ambience notion, the present research work makes for a contribution consisting on the development of an occupant based model for the natural luminous ambience. One of the ambience notion virtues is the supply of the architectural research with specific to architecture theoretical bases whilst preserving its links to other fields with an environmental spirit. This notion provides new components for the study of the environmental physical stimuli within the built spaces that is the requirement of the plurisensoriality. Hence, the proposed conceptual model will be beyond the conventional ones because it associates the context particularities, the luminous environment and the architectural space to the user. An office building from an east-southern Algerian city under a clear sunny has been chosen as a case study to apply this conceptual model. The field research work proves the feasibility of the model and indicates the hierarchy of the hypothesized relationships but also reveals the unsuitability of some statistical analysis methods.