This paper examines how ‘sustainable development’ is conceptualised and proposed to be applied in the NSW planning system set out in a White Paper and two Exposure Bills – the Planning Bill and the Planning Administration Bill. An appendix to the paper contains a summary of the proposed system. Comparison is made with ‘sustainable development’ in the current planning system. Commentary from selected stakeholders provides some analysis of the proposed system; these comments are too complex and extensive to be encapsulated in this summary. While a broad cross-section of stakeholders was selected, this paper does not purport to represent all stakeholder positions on the White Paper and Exposure Bills.