From 1 July all commercial building spaces of 1000m² or more must have their energy efficiency rating disclosed when selling, leasing or subleasing. The extension to the Commercial Building Disclosure (CBD) Program from 2000m² to 1000m² means that another 1000 commercial office buildings are affected by the CBD requirements.

Building owners and real estate agents  advertising properties for lease or sale are required to place the buildings NABERS Energy star rating on all advertising material. The changes are expected to result in over $50 million in energy savings and 3.5 million tonnes of emissions reductions over five years.

The extension to the CBD were determined after an independent review of the program which found it was a successful means to deliver significant benefits at minimal cost to both the industry and the government. The review also found that the program created positive behaviour change in regards to energy efficiency in buildings.

More information here.