Section J of the Building Code of Australia

BCA Section J of the codification of Australia (BCA) needs minimum levels of energy potency to be achieved for non-residential buildings (generally building categories 3-10). Compliance applies to all or any new buildings at intervals these classes, and to all new extensions or refurbishments of existing buildings in these classes, though there's some latitude on however way compliance with Section J should come in some extension or refurbishment projects.