The continuing population growth, decreasing availability of productive land due to land conversion, transport emissions of food and other factors will create significant challenges for supplying future food demand and sustainability. The United Nations Development Programme (UNDP) identified that by 2050 there will be an additional 2.7 billion people in the world (UNDP, 2009). Two thirds of the world’s population will be living in urban areas by 2030 (Population Reference Bureau, 2011). Over the period of ten years, between 1982 and 1992, 18.5 hectares of prime farm land per hour were converted to urban built up areas in the USA (Heller and Keoleian, 2003:1014). In the UK, 12% of the nation's fuel consumption is food related and is spent on packaging and transporting food (Garnett, 1997). If all foods are grown within 100 km farm to plate travel distance, a 96% reduction in emissions is possible in current food transport emissions in New Zealand (Pritchard and Vale, 1999). Local food production in home, community and allotment gardens are becoming very popular all over the world as evidences show (Australian City farms and Community Gardens Network, 2011; National Gardening Association, 2009). Local food production minimises transport emissions by facilitating shorter food supply chains (SFCs); provides fresh and nutritious food for better public health; reduces prolonged refrigeration and storage requirements; reduces food wastage; improves overall carbon footprints and develops social interactions and better engagement with nature for improved sustainability performance (Gaynor, 2006; Ghosh et al., 2008; Ghosh, 2010). Home gardens exist within millions of private residential outdoor spaces in the cities and suburbs of the world. Local food production in these home gardens could work as an informal alternative local food production network; build positive connections to nature and could contribute immensely to sustainability of residential neighbourhoods (Gaynor, 2006; Kneafsey et al. 2008; Ghosh et al., 2008; Ghosh, 2010). Current local food production research has focussed on community engagement and participation and social perspectives of growing food in the community gardens. A very limited research has been conducted on sustainability performance and household participation in the home gardens. This paper, firstly, aims to investigate spatially using GIS, available productive land areas of domestic gardens in a selected residential suburb in Western Sydney at a Collection District (CD) level as defined by Australian Bureau of Statistics (ABS). The morphological correlations of productive land to parcel areas, garden sizes and other land covers such as trees, built roof areas etc. are examined spatially to classify specific garden typologies and their associated dwelling structures. Secondly, using a GIS based model and mathematical calculations, potential quantity of vegetables in equivalent food energy units that could be produced in a neighbourhood is estimated. Only vegetable production is considered as it is common and due to limited availability of local food data on the home gardens. A questionnaire survey with householders will be conducted in coming months to comprehend household participation, problems and prospects of growing food in the home gardens. This paper does not include the results of the questionnaire survey as it is not complete to date. The results could be presented in the conference. Also this paper mainly focuses on the home gardens and does not include sustainability of local food production in community and allotment gardens and smaller farms.