The following links provide information to State authorities whom act as “Building Code Police”, particularly for consumer enquiries:

Victorian Building Authority (VBA):
https://www.vba.vic.gov.au/
Telephone: 1300 815 127
Domestic Building Dispute Resolution Victoria
https://www.dbdrv.vic.gov.au/

NSW Office of Fair Trading:  
https://www.fairtrading.nsw.gov.au 
Telephone: 13 32 20

Queensland Building and Construction Commission (QBCC):
https://www.qbcc.qld.gov.au/
Telephone: 139 333

South Australian Building Commission:
https://www.sa.gov.au/topics/rights-and-law/consumer-rights/disputes/disputes-with-a-builder-or-tradesperson
Telephone: 131 882

Western Australia Building Commission:
https://www.commerce.wa.gov.au/building-commission
Telephone: 1300 136 237

Tasmanian Consumer, Building & Occupational Services (CBOS) :
https://www.cbos.tas.gov.au/contact-us
Telephone: 1300 654 499