End-use energy models explain the demand for energy by households at the level of specific end uses, such as space heating, cooking and water heating. An important advantage of end-use energy models is their usefulness in analyzing complex policy questions relevant to understanding and managing the demand for energy. With data available on total household gas demand and appliance ownership, the statistical method of conditional demand analysis (CDA) is utilized to estimate the end-use consumptions of reticulated gas in Australia. We extend the existing literature by expanding the scope of the analysis to different regions of Australia thus providing a comprehensive national picture of end-use gas consumption and facilitating interregional comparisons. Our results show that there are significant interregional differences in the gas consumption for different end uses. Energy policies which ignore these interregional differences, for example, national policies aimed at persuading households to switch from electricity to gas in order to reduce CO₂ emissions, are likely to lead to inefficient or ineffective outcomes.