In this research, we carried out questionnaire surveys and freely-offered opinion surveys targeting the occupants of public and private multi-family condominium housing with various differing living conditions and examined the structure of occupant awareness of the sound environment in multi-family housing. Concerning the freely-offered opinion surveys, we analyzed everyday terms relating to the sound environment, identified the concepts in the formation of occupant awareness. We formulated an occupant awareness model based on these that forms an "evaluation of the degree of satisfaction of the sound environment" and carried out path analysis of the various main factors involved. As a result, we found that "floor sound insulation properties, "environmental noise," "limitations in living" and "past residential experiences" are factors that exert a direct influence on the evaluation of the degree of satisfaction of the sound environment. These factors are prompting a flow of consciousness further linking to endogenous factors such as the "presence of children," "perception of causing harm," "neighborhood relationships, manners and rules." Through this analysis, we were able to gain an overall comprehension of the structure of occupant awareness in which is formed an evaluation of the degree of satisfaction of the sound environment.