Mandurah — LGA Conditions Intelligence
Structural Absorber (provisional)Net internal migration accelerated across all four years (+1,766 → +2,456, up 39%), on a stable arrivals base (~7,500–7,900/yr) against steadily falling departures (5,939 → 5,107, down 14%) — a clean structural-absorber signature, the strongest and cleanest of this cohort.
ERP growth segmented into four phases. Unlike Fraser Coast and Bundaberg, Mandurah never really “stalled” — every phase since 2001 has run in the double digits, the strongest sustained growth profile in this cohort.
Against 2,456 net internal arrivals in 2024-25 (≈1,023 implied new households at 2.4 persons/household) and 1,457 approvals the same year, approvals fall short of migration-implied demand — worth reading against the LGA’s unusually high 17.1% Census unoccupied-dwelling rate below, which suggests a meaningful holiday-home/second-home stock that may absorb some of that gap.
The Census unoccupied dwelling rate counts dwellings recorded as unoccupied on Census night — it is not a market vacancy rate and includes holiday homes, dwellings between tenancies, and homes under renovation. Mandurah’s 17.1% is the highest in this cohort by a wide margin, consistent with its profile as a WA coastal/holiday-home market.
- Bedrock figure is population-weighted, not a simple average of suburbs. Readings are on APN Bedrock™ methodology v1.1. Mandurah’s population-eligible localities (80,830 residents across 17 localities) produce a population-weighted mean of 30.6 on node
24110. A simple, unweighted average gives 35.4 instead. This card uses the population-weighted figure, consistent with the platform’s existing LGA-rollup convention. - Classification badge is indicative. “Structural Absorber” reflects the qualitative pattern (falling departures, accelerating net gain) but the platform’s formal 4-way classification query has not been ratified.
- No crime/safety data included in this version. APN Sentinel™ crime-pillar data (node 24121/24122) exists at suburb grain nationally but carries open, jurisdiction-specific data-quality caveats not yet resolved platform-wide — deliberately excluded from this card rather than presented with unresolved caveats attached.
- Demographic profile is 2021 Census vintage.
- Card format approved 19 August 2026. The Bedrock population-weighting convention used above was adopted platform-wide in October 2026; the LGA classification methodology remains unratified, independent of the card format itself.
