Regulatory control of the physical and economic availability of alcohol has long been used as a means for limiting the undesirable consequences of alcohol consumption by responsible governments. While the regulation of the sale and supply of alcohol in Australia is the responsibility of state/territory governments, National Competition Policy in particular has direct ramifications for how state/territory governments regulate numbers and types of liquor licenses granted within their jurisdictions (outlet density) and has resulted in considerable change to some liquor acts. The overall aim of this feasibility study was to progress the development of an Australian model sensitive to local risk factors to help authorities determine appropriate liquor densities for minimising alcohol-related harms within communities. The project explored how best to apply the wealth of international and Australian research evidence, and systematically collected information on alcohol consumption and related harms to objectively evaluate (and ultimately predict) the impact of outlet density changes to the public health, safety and amenity of communities. (Executive summary, edited)