Altona (postcode 3018) sits on Port Phillip Bay approximately 13 kilometres south-west of Melbourne's CBD, governed by the City of Hobsons Bay. Its SEIFA IRSAD score of 1048 places it in national decile 8 of 10 and at the 77th percentile within Victoria, firmly in the advantaged band. That reading reflects a resident population with above-average relative socio-economic resources, sitting meaningfully above the national mean of 1000. For investors using PropertyRanker, this postcode-level signal feeds directly into three of the model's twelve scoring criteria: economic_strength, hazard_risk, and entry_point_risk.
ABS 2021 IRSAD release. Score 1048 (national mean = 1000).
A decile 8 SEIFA reading in an inner-western bayside suburb carries a specific meaning for investors. It indicates that the surrounding population tends to have stronger household incomes, lower unemployment, and better access to services than the national average. In the PropertyRanker model, this supports a more favourable economic_strength score and moderates the entry_point_risk flag, because areas with higher socio-economic standing have historically shown more resilient demand during softer market cycles. The hazard_risk criterion also draws on SEIFA as a proxy for neighbourhood-level maintenance standards and insurance claim patterns, where advantaged areas tend to score better.
Altona's position within the City of Hobsons Bay adds geographic context. The suburb is a genuine coastal location with train access via the Altona Loop connecting to the Werribee line, and the West Gate Freeway provides a road corridor to the CBD. The suburb contains a mix of low-density residential housing in its southern half and industrial land in its north-western half, which means the character of a specific street or block can differ considerably within the same postcode frame. Neighbouring Williamstown (3016) to the east typically commands a price premium, while Altona Meadows (3028) to the west sits at a lower price point, suggesting Altona occupies a middle tier within the Hobsons Bay corridor.
A SEIFA score of 1048 does not make every listing in 3018 a sound investment. The score is a macro signal. It cannot see the build year of a specific dwelling, the orientation of a block, the health of a strata scheme, or whether a particular street sits within a flood or coastal inundation overlay. A listing on the industrial boundary of the suburb will carry different risk characteristics than one on the beachfront esplanade, even though both share the same SEIFA reading.
As of May 2026, CoreLogic data (via yourinvestmentpropertymag.com.au) shows Altona's median house price at $1,190,000, reflecting a -0.83% annual change over the prior 12 months, with 106 house sales recorded in that period. Days on market for houses sit at 31 days (CoreLogic/YIP, May 2026), while htag.com.au reports a vacancy rate of 1.09% and stock on market of just 0.26%, pointing to a tightly held but softening price environment. A July 2024 anchor from barryplant.com.au puts the median at $1,100,000 (with -2.4% annual growth at that time), and inthesuburbs.com.au records a June 2025 median of $1,168,000 (down 1.1% year-on-year), providing a multi-year price trajectory sourced from CoreLogic and related aggregators.
Anchor points pulled per refresh from publicly available suburb profiles. Approximate; not a moving average.
Median price has declined year-on-year for at least two consecutive periods (-2.4% to Jul 2024, -1.1% to Jun 2025, -0.83% to May 2026), signalling vendors are accepting lower prices (widening discount direction), while vacancy at 1.09% and DOM at 31 days are broadly stable, placing the market in a cool band.
Sources: Altona VIC 3018: Suburb Profile & Property Report (2026-09-03); Altona VIC 3018 Property Market and House Prices 2026 (2026-01-01); Real Estate Appraisal Altona VIC 3018 (2024-07-13); Altona VIC 3018 | Coastal VIC Community (2025-06-30) · Refreshed 8 Sep 2026
PropertyRanker scores any Australian property against 12 criteria across three pillars: Growth, Cashflow, and Risk. SEIFA is a primary signal for economic strength and a supporting one for entry-price risk. It also informs the crime side of hazard risk, though physical overlays like flood, bushfire and coastal exposure, and recorded crime data where available, take priority there. The decile of 8 shown above gives a listing in Altona a stronger starting line on economic strength than the national median postcode, and a softer one on entry-price risk, since more advantaged postcodes usually carry higher entry prices.
On top of that, PropertyRanker chooses one of four strategies (Balanced, Growth, Yield, Regional) and applies a per-strategy yield anchor. The anchors are 3.5% for Growth, 5% for Balanced, 6% for Yield, and 7% for Regional. A postcode at this level of relative advantage tends to suit the Growth (3.5% anchor) and Balanced (5% anchor) strategies more readily than Yield (6%) or Regional (7%), because a higher entry price compresses the gross yield a listing can reach without a specific value-add.
Read the scoring guide for the full criteria list and how the verdict thresholds work.
SEIFA is a postcode-level read. The fastest sanity check on any single decile reading is to compare it against the suburbs that surround it.
Investors assessing a specific listing in Altona should confirm several things the SEIFA reading cannot address. First, check the flood and coastal inundation overlay status for the specific lot, given the suburb's bayside and low-lying geography. Second, review the SQM Research vacancy rate for postcode 3018 at the time of assessment, because a low vacancy rate supports rental demand assumptions while a rising rate signals oversupply risk. Third, for any unit or apartment, obtain the owners corporation records to assess levy arrears, deferred maintenance, and any special levies in progress. Fourth, compare the asking price against recent comparable sales in the same street type and dwelling category, not just the broader suburb median. Finally, consider which PropertyRanker strategy the gross yield of the specific listing aligns with: a bayside suburb at this SEIFA level tends to attract Capital Growth or Balanced strategy framing (around 3.5 to 5 percent gross yield anchors), but the actual yield on any given listing may differ. Score the specific listing in PropertyRanker to get a verdict that accounts for current SQM vacancy, body corporate health, flood and overlay status, and pricing against recent comparable sales.
Altona's SEIFA IRSAD score of 1048 (national decile 8, 77th percentile in Victoria) indicates an advantaged socio-economic profile, which PropertyRanker treats as a positive macro signal for economic_strength and entry_point_risk. However, a strong postcode-level reading does not determine whether any specific listing is sound; the build quality, overlay status, vacancy rate, and pricing relative to comparable sales all matter independently. The model uses SEIFA as one of twelve scoring criteria, so investors should score the specific listing rather than relying on the suburb band alone.
An advantaged SEIFA band combined with a bayside location close to Melbourne's CBD typically aligns with a Capital Growth or Balanced strategy framing in PropertyRanker, which anchor around 3.5 percent and 5 percent gross yield respectively. High Yield (around 6 percent) and Regional (around 7 percent) strategies are harder to achieve in established inner-western bayside suburbs at current price levels, though individual listings can vary. Confirm the gross yield on the specific property you are assessing and run it through PropertyRanker to see which strategy band it falls into.
The suburb's bayside and low-lying geography means flood and coastal inundation overlays are a genuine due-diligence item for specific lots, and this is something SEIFA cannot capture. The northern half of the suburb contains industrial land, so proximity to industrial zoning is a street-level risk that varies considerably within the postcode. For units and apartments, body corporate health and any deferred maintenance are additional risks that require inspection of owners corporation records before committing.
PropertyRanker applies twelve scoring criteria to each listing. SEIFA IRSAD (score 1048, decile 8 for Altona) feeds directly into economic_strength, hazard_risk, and entry_point_risk as a macro signal. The remaining criteria draw on listing-level data including current SQM vacancy for postcode 3018, flood and planning overlay status for the specific lot, body corporate records where applicable, and the listing price benchmarked against recent comparable sales. The combination of macro and micro signals produces a score that a postcode-level reading alone cannot replicate.
Williamstown (3016) to the east is a heritage bayside suburb that generally commands a higher price point than Altona, which can compress gross yields further and push listings toward a Capital Growth strategy framing. Altona Meadows (3028) to the west typically sits at lower price points with a different demographic profile, and its SEIFA reading should be checked separately as it is a distinct suburb with its own score. Altona occupies a middle position in the Hobsons Bay corridor, and its decile 8 SEIFA reading suggests stronger socio-economic fundamentals than many western Melbourne suburbs at comparable or lower price levels.
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