This project is concerned with the relationship between planning policy and the characteristics of housing supply. It assesses the effects of planning policy on housing characteristics such as size, type and location. It focuses on a particular time-from 1990 until 2008, and place-the metropolitan area of Melbourne. The project will be of interest to both planning and housing researchers and practitioners. Its approach combines quantitative data analysis and modelling, using sales and valuation data, with qualitative information gained from interviews with a selection of planning managers and land and housing developers to give a more comprehensive understanding of the relationship of government policy to built form outcomes. The characteristics of housing supply that were chosen for investigation through these forms of enquiry were those which the planning regime and planning policies sought to affect. We are thus assessing the effectiveness of policy in achieving its own stated aims.