Yes, all enzie spiral stairs comply with the Building Code of Australia.  The VBA has determined that the enzie spiral stair complies with the requirements of Clause DP2(c), DP3 Vol 1 and P2.5(b), P2.5.2 Vol 2 of the BCA. ’96 as adopted by the Building Regulations, (provided you use a stair suitable for the application). This applies equally to all states. Refer to relevant data sheets for building permit application approval. Follow the procedure set out on the enzie data sheets.