Glossary · Australian property
DA approval (Development Application approval).
The council-approval mechanism that allows a property owner to build, renovate, subdivide, or change-of-use a property. Each LGA maintains a public DA register. The volume and nature of DAs in an LGA is a leading indicator of supply-pulse changes 18-36 months ahead.
Mechanic: under each state's Environmental Planning Acts (NSW Environmental Planning and Assessment Act 1979, VIC Planning and Environment Act 1987, etc.), most non-trivial property modifications require council approval before construction. Property owner submits a DA plus plans plus impact assessment. Council reviews and decides. Approved DAs get registered and are public.
What the DA register shows for investors: rolling 12-month DA approvals at LGA level indicate the supply pipeline. A 200% spike in DA approvals for higher-density residential typically translates to construction completions 18-36 months later, which depresses median price for 2-5 years post-completion.
What to watch in an LGA's DA register: (a) cumulative residential DA approvals (rolling 12-month), (b) median DA dollar-value (proxies for project ambition), (c) zoning-amendment-driven DA volume (signals upcoming rezoning), (d) commercial-to-residential change-of-use DAs (gentrification leading indicator), (e) demolition + subdivision DAs (housing-stock turnover signal).
Access: each LGA publishes DA registers online. Some states offer state-wide aggregation (NSW Planning Portal, VIC Planning Hub). Pap suburb scorecards surface DA-pulse signals and flag suburbs with concerning supply-pipeline buildup.
Source
State Environmental Planning Acts; LGA DA registers; NSW Planning Portal + VIC Planning Hub aggregation tools.
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