Using GIS as an aid to understanding urban consolidation

Major initiatives to encourage urban consolidation in Sydney have been undertaken by the New South Wales Government in the last twenty years. The contribution of the research described in this article is to show the central importance of GIS in the methodology of analysing the policies, processes and outcomes of this urban consolidation activity. While the use of GIS to interrogate data from the Population Censuses conducted by the Australian Bureau of Statistics (ABS) to describe spatial distributions and characteristics is reasonably common, it can be used with local records to build up a picture of the character and impact of building the different kinds of dwellings defined as constituting urban consolidation. In this way ABS data can be used as a context within which to place GIS analysis of the registers of development applications as indicated in studies of three local councils in the south and southââ"šÂ¬Ã¢â‚¬Å“west of Sydney. This approach shows the usefulness of using similar but not completely congruent data sets to investigate complex phenomena such as urban consolidation. It also highlights the importance of classifying and recording local information about urban development and change in a form that enables more proactive programs of policy formulation and operation.