This Federal Legislation can be reviewed at https://www.comlaw.gov.au/

From 1 May 2011, any new building open to the public, or existing buildings undergoing significant renovation, are required to comply with the Disability (Access to Premises - Buildings Standards 2010. The Standards clarify how to ensure buildings are accessible to people with disability and meet the requirements of discrimination law. 

Over time, the Premises Standards will ensure that buildings in Australia become more accessible, and more useful to an ageing population. More accessible buildings will assist in achieving equal participation for people with disability in employment, education, access to services, and other areas of participation in economic, social and cultural life.