If the regulation or requirement pertaining to a particular defect is referenced within the Building Code of Australia then it is considered that a breach of the building code has occured. Compliance with The Building Code of Australia is mandatory and enforcable by law and at the Building Commission. Generally components of a structural nature (brick work, roof framing, waterproofing etc..) are referenced within the Building Code of Australia.
Although some standards are not referenced within the Building Code of Australia they may be used to establish whether your builder has undertaken the work in a proper and tradesman like manner and the report may still be used to identify defective work or used at the Building Commission as an expert witness report. Generally items which are secondary to structural components (kitchen cabinetry, plastering, skirting boards etc.) are not referenced within the building Code of Australia.