3. Main purposes of Act and their achievement
(1) For achieving its main purposes, this Act—
(a) provides for particular parts of the State to be declared as areas called urban development areas; and
(b) establishes the Urban Land Development Authority to plan, carry out, promote or coordinate and control, the development of land in those areas.
(2) The main purposes of this Act are to facilitate the following in the areas—
(a) the availability of land for urban purposes;
(b) the provision of a range of housing options to address diverse community needs;
(c) the provision of infrastructure for urban purposes;
(d) planning principles that give effect to ecological sustainability and best practice urban design;
(e) the provision of an ongoing availability of affordable housing options for low to moderate income households.
(3) In this section—
ecological sustainability means a balance that integrates—
(a) protection of ecological processes and natural systems at local, regional, State and wider levels; and
(b) economic development; and
(c) maintenance of the cultural, economic, physical and social wellbeing of people and communities. range of housing options, to address diverse community needs, means the range of housing required to meet the range of community needs, including, for example, housing of different size, type, price, built form, density, cost, adaptability and tenure. | 
