Over the years researchers in many fields, including in environmental psychology, have investigated the subject of housing density. The concepts used have been crowding, perceived density, density, and the attempt has been made to explore the relationships among these terms. On the whole, this research has suffered from three major problems: It concentrates on the negative implications of high density. It neglects to specify the quantitative density existing in the environment being studied. Each study deals with different groups, places and conditions, and with different dependent and independent variables, making it virtually impossible to generalize from the results and their implications, we are left without a comprehensive theory of the meaning of housing density for people living in environments of varying density. This paper will present the first stage of a research project that focuses on the meaning of housing density for the individuals experiencing it. This stage involves the formulation of a comprehensive conceptual framework, on which the later stages will be based. The research is application-oriented and with an urban planning focus, rather than a psychological-theoretical orientation. Psychological aspects of density are assumed to be intertwined with all the other aspects of the residential environment: social, cultural, physical, economic, ecological, technological, planning policy and politics. The formulation of the conceptual framework consists of four stages: (1.) Identifying the variables related to housing density in all of the related fields, as presented in the theoretical, empirical and practice-related literature. (2.) Identifying the hypothesized linkages between variables within a particular aspect, and betcen the various aspects, and between housing density. (3.) Selecting criteria for choosing variables to be included in the more specific conceptual framework for the next stages of the research (e.g., variables influenced by planning). (4.) Choosing the variables and their hypothesized inter-connections according to the selected criteria. // The first two stages lead to a general conceptual framework for housing density research. while the last two stages lead to the more specific framework that will be the basis for our own study.