For current versions of Commonwealth and Victorian legislation use the following sources:
Federal Register of Legislation
Free access to the official authorised version of Commonwealth legislation and related documents.
The Victorian Legislation website is the authoritative source for Victorian Legislation. Search here for relevant Victorian property legislation such as the Building Act 1993 (Vic), Estate Agents Act 1980 (Vic), Heritage Act 2017 (Vic), Instruments Act 1958 (Vic), Land Acquisitions and Compensation Act 1986 (Vic), Land Act 1958 (Vic), Property Law Act 1958 (Vic), Residential Tenancies Act 1997 (Vic), Retail Leases Act 2003 (Vic), Sale of Land Act 1962 (Vic), Subdivision Act 1988 (Vic), Transfer of Land Act 1958 (Vic) and Water Act 1989 (Vic)