Gentrification refers to the in-migration of affluent households to poorer and lower value areas of the city. In Australian cities like Melbourne and Sydney this process has become notable in a significant number of suburbs. While gentrification has appeared to increase investment in the housing stock of these areas, there have been persistent risks that such sudden flows of money and people may displace lower-income and vulnerable residents, particularly where their tenure is insecure in private rental accommodation. This positioning paper considers the international literature on gentrification-related household displacement. The paper then considers available data sources and a model appropriate to estimating areas of intensive gentrification activity, and subsequently to accurately measure flows of displacement from these areas. These measures will form the basis of the empirical research that will follow this review.