Site Evaluation and Cultural Influence Extensions to a Residential Location Model Derek T. Robinson dtrobins@umich.edu School of Natural Resources and the Environment and Center for the Study of Complex Systems, University of Michigan Why do residential development patterns exist the way they do today? What are the factors driving and constraining residential site selection? A number of theories and mechanisms have been proposed to answer these general questions in residential location theory. The purpose of the presented research is to extend work in this field by introducing mechanisms related to heterogeneous site evaluation and cultural influence. Patterns of clustering in urban development patterns are analysed to determine if the introduction of these mechanisms cause significant differences in the spatial settlement patterns of residents, why they occur, and what these differences mean. While site evaluation and cultural influence mechanisms are topics of influence in a number of other fields, they have yet to be incorporated into residential location models. Therefore the proposed mechanisms may provide new types of explanation for why residential patterns emerge the way they do. Because the proposed mechanisms extend those that already exist they may be thought of as complementary rather than in competition with them.