Peoples' knowledge of their environment affects their use and evaluation of the particular environment. Therefore, behavior in the designed environment should be understood in the context of the aspects of the users' environmental experiences. This study explored the link between environmental knowledge and evaluation, through a study of residential satisfaction. Housing environments ere chosen because the spatial significance of the home transcends its fundamental purpose as shelter. The empirical study involved an examination of residents' use, knowledge, and evaluation of a housing development in India. For the purposes of this research, residents' housing imageries were considered indicators of their housing related knowledge. Residents' spatial conceptions of their previous (or past), present, and ideal housing were examined. Environmental evaluation entailed the residents ratings of the attributes of their dwelling, neighborhood, and services. The evaluative data were collected through surveys, observations, and in_depth interviews. Spatial data were collected through mapping. where residents mapped or sketched their previous, present, and ideal house layouts. Behavioral data were collected through observations conducted over a period of two months. Data from the surveys and maps indicate that residents are more satisfied with their present housing) when the differences between present and previous housing are positive, and ii) if the present house is comparable to the image of the ideal house. The data also indicate that residents evaluated their dwellings using spatial references and their neighborhood and services using socioeconomic criteria. This study concentrated on the differences between different representations of reality (previous and present houses) and reality and imagination (present and ideal houses). Mapping as used in the context of this study transcended its value as a spatial analysis tool and explored the perceptual dimension of space as well. By addressing respondents' conceptions of their ideal houses, the present study is unique in that mapping incorporated a future dimension.