Innovation Economy: +1.9% Extra Growth Per Year
Suburbs above the Innovation Economy threshold grow 1.9% per year faster than the market. That is extra growth, on top of whatever the market does. We tested 112,564 sales across a decade.
This is one of 5 synthetic threshold indices in the Microburbs research programme.
What Is the Innovation Economy Index?
Some suburbs attract clusters of knowledge workers in vibrant, innovative sectors. These are people who work in fast-growing parts of the economy. Where they choose to live tells you something about a suburb's trajectory.
Other suburbs have fewer of these workers. The local economy is built on different foundations. The Innovation Economy Index captures this distinction and scores every suburb in Australia.
The model combines census and other government data sources into a single score. A high score means a dense cluster of innovative knowledge workers. A low score means these workers are largely absent. The specific variables and their interactions are proprietary.
Three Performance Zones
The model splits suburbs into three tiers based on their Innovation Economy score. Each tier shows a distinct growth pattern over a 2-year measurement window.
4.8% spread between top and bottom tiers
Top tier suburbs grow 1.9% faster than the market. Bottom tier suburbs trail by 2.9%. The total gap is 4.8 percentage points per year over 2 years.
Performance Over Time
The chart below tracks the 2-year annualised growth rate for above-threshold and below-threshold suburbs. The dashed amber line shows the spread between the two groups. The above-threshold line (blue) sits above the below-threshold line (red) for much of the period, though the pattern shifts notably after 2021.
Consistency Across 26 Sample Dates
We tested the signal at 26 different points in time. The top tier outperformed at 19 of those dates. The remaining 7 dates still showed the expected direction in most cases but with a weaker spread.
Geographic Breakdown
The signal works across most Australian regions. The chart below shows the spread (above-threshold suburbs minus below-threshold suburbs) for each GCCSA region. Positive spread means the signal works as expected.
Full Regional Table
All growth rates are annualised over 2 years.
| City | Spread | Sales Tested |
|---|---|---|
| Regional WA | +3.68% | 5,305 |
| Regional Qld | +3.07% | 14,077 |
| Sydney | +2.30% | 5,570 |
| Regional Vic. | +1.82% | 9,126 |
| Regional NSW | +1.27% | 12,632 |
| Perth | +1.24% | 3,923 |
| Regional SA | +0.34% | 3,056 |
| Brisbane | +0.06% | 4,937 |
| Darwin | -0.13% | 312 |
| Adelaide | -0.16% | 3,643 |
| ACT | -0.35% | 1,005 |
| Melbourne | -0.40% | 5,678 |
Real-World Example: Ambarvale vs Dharruk
Both are affordable outer-suburban Sydney suburbs with detached houses in the $500,000 to $800,000 range. Ambarvale is in the Campbelltown corridor. Dharruk is in the Mount Druitt area. Both attract first-home buyers and young families. The difference is their innovation economy score.
Ambarvale, NSW 2560
Sydney
Innovation score: 100 / 100
Growth vs median: -0.96% p.a.
Example property hold
6 Cheeryble Place: bought January 2010 for $281,000, sold May 2022 for $790,000. That is 8.7% compound annual growth over 12.3 years.
Dharruk, NSW 2770
Sydney
Innovation score: 2.7 / 100
Growth vs median: +1.64% p.a.
Why the low-scoring suburb grew more here
Dharruk outperformed on growth despite its low innovation score. This is the weakest of our nine signals: the out-of-sample R-squared is just 0.013, and the signal inverts in some periods. The spread of +1.9% works across 112,564 sales but individual suburb pairs are noisy.
Is This Pattern Real?
We tested this across 112,564 sales over more than a decade. The +1.9% outperformance is consistent across most time periods and regions.
However, this signal has a clear weakness. After 2021, the pattern inverts. High-scoring suburbs started underperforming, while lower-scoring areas caught up or overtook them. This shift lines up with the post-pandemic period, when remote work allowed buyers to move further from established knowledge-worker corridors.
The 2022-2023 data shows the below-threshold suburbs outperforming the top. That is a genuine reversal, not noise. Investors should treat this index with caution in the current market. The historical signal across 2008 to 2021 is strong. The recent performance is not.
Across the full period, the signal worked at 19 of 26 different time periods. It held in 8 of 13 geographic regions. The above-threshold suburbs beat the below-threshold suburbs in 67% of quarters. These numbers show a real pattern, but one that has weakened recently.
Want the Full Statistical Detail?
The Technical Whitepaper covers p-values, R-squared, t-test methodology, and the full date-by-date and region-by-region breakdown.
Find Innovation Hotspot Suburbs Near You
Get Innovation Economy scores for every suburb in Australia. Combine with other Microburbs signals to build a shortlist that outperforms.
Part of the Threshold Signals research programme