Australian Property Market Family Score: A Validated Suburb-Level Indicator
1. Abstract
This whitepaper documents the family dimension of the Microburbs nine-dimension livability score for Australian residential suburbs. Each Australian residential microburb (street-block of approximately 30 to 60 dwellings) is scored on this dimension on a 0 to 10 scale, and the suburb-level aggregate is validated against actual market outcomes for 4,127 suburbs.
Family correlates with house prices at +0.28, weekly rents at +0.31, and gross rental yields at -0.29. It has a notable NEGATIVE correlation with 5-year growth (-0.21), suggesting family-heavy suburbs are mature and saturated.
Contents
2. What the family dimension measures
The family dimension is built from the following inputs: school proximity and quality (NAPLAN-ranked), playground density, family housing stock, couples-with-children share, distance to parks, distance from major roads, and inverse pub/nightclub density.
Family suburbs are characterised by long-term owner-occupation, steady tenant demand from professional families, and lower transaction velocity than convenient or hip suburbs. The trade-off is paid up front in prices, not via growth.
3. Findings: family score vs investor metrics
Each row below shows the suburb-level correlation between the family dimension score and one investor metric, computed across all 4,127 Australian suburbs with sufficient data. Confidence intervals are derived from 500 iterations of cluster bootstrap resampling at the suburb level.
| Investor metric | n suburbs | Correlation | 95% CI | Bottom 25% suburbs | Top 25% suburbs |
|---|---|---|---|---|---|
| Median house price | 4,127 | +0.280 | (+0.256, +0.305) | $620,000 | $1,000,000 |
| Median weekly rent | 4,033 | +0.309 | (+0.284, +0.337) | $430 | $550 |
| Gross rental yield | 6,443 | -0.289 | (-0.314, -0.265) | 5.01% | 3.93% |
| 5-year house growth | 4,126 | -0.212 | (-0.239, -0.179) | +58% | +40% |
| Vacancy rate | 3,252 | +0.032 | (-0.007, +0.068) | 0.67% | 0.70% |
4. Example suburb: Eltham North (Vic.)
Eltham North (Vic.) sits in the top tier of Australian suburbs on the family dimension, with a score of 6.46 out of 10.
| Metric | Value | Note |
|---|---|---|
| Family Score | 6.5 / 10 | National top tier |
| Median House Price | $1,200,000 | Unit: $770,000 |
| Weekly House Rent | $530 | |
| Gross Yield | 3.15% | |
| Vacancy | 0.97% | |
| 5yr Growth | +38% |
Full dimension breakdown for Eltham North (Vic.)
The family dimension does not exist in isolation. The same suburb scored on all nine livability dimensions reveals the full investor profile. Eltham North (Vic.)’s family strength is shown highlighted; the other dimensions show where it sits on each independent measure.
| Dimension | Score |
|---|---|
| Affluence | 6.6 |
| Community | 5.5 |
| Convenience | 2.4 |
| Safety | 8.7 |
| Family | 6.5 |
| Hip | 1.5 |
| Lifestyle | 3.5 |
| Tranquility | 7.1 |
5. Interpretation
The family dimension is one input among nine. By itself it predicts current price level and rent level for Australian suburbs at the strengths shown in Section 3. It does not, on its own, predict capital growth direction over the medium term — that question requires a separate temporal analysis that this score does not attempt.
The right use of the family dimension for an investor is to understand which feature of a suburb is driving its price position. For a buyer-occupier, it can be combined with other dimensions to find suburbs that match specific priorities (e.g. high family + high tranquility + high family).
6. Limitations
- The score is cross-sectional and does not capture trajectory.
- Validation is at suburb level (n=4,127). Microburb-level validation is not directly tested.
- Correlations are observational and do not imply causation.
- The family dimension shares some underlying inputs with other dimensions (notably affluence, safety, and economic). Joint use of multiple dimensions does not double-count cleanly.