About 80,000 Australian households have poultry that produce around 2,000 tonnes of meat and more than 26 million dozen eggs. Other households grow such things as nuts, grapes for wine, small meat animals such as rabbits and quail, plus fin fish and crustaceans. It is an expanding interest as more people develop interest in producing their own food, especially using Permaculture techniques. Professional and sideline urban agriculture is a fast-developing agricultural sector, especially in hydroponic technology in use in urban and periurban areas. This is extending to urban and periurban farms growing fin fish and crustaceans, and to rooftop farming.
Rooftop farming is a particularly important sector.
Developed countries are also advancing. At first this organisation focused mainly on Africa, Central America and South America. In 1997 TUAN also focused on Europe and North America. TUAN has about 6,000 networkers , and many contribute case studies to the TUAN urban agriculture library in Washington DC, in the United State. It now has the support of the World Bank in studying the better use of agricultural wastes in urban areas.