Athelstone vs St Marys
Property investment comparison - Athelstone, SA 5076 vs St Marys, SA 5042
Head-to-head across core investment metrics: Athelstone wins 2, St Marys wins 3. The better choice depends on whether you're optimising for cash flow, growth, affordability, or liquidity, the table below highlights the winner on each metric.
| Metric | Athelstone | St Marys |
|---|---|---|
| Median house price | $1.1M | $1.0M |
| Median unit price | $630K | $540K |
| Gross rental yield (houses) | 3.30% | - |
| Gross rental yield (units) | - | 4.80% |
| 1-year house growth | +14.1% | +11.7% |
| 3-year house growth | +41.1% | +30.9% |
| Vacancy rate | 0.5% | 0.3% |
| Population | 9,601 | 3,010 |
Athelstone vs St Marys: what the numbers say
The median house price is $1.1M in Athelstone and $1.0M in St Marys, so St Marys is the cheaper entry point, with Athelstone houses about 3% dearer.
For units, Athelstone sits at a median of $630K against $540K in St Marys, which makes St Marys the more affordable unit market and Athelstone the pricier one.
Over the past year house prices moved +14.1% in Athelstone and +11.7% in St Marys, so recent momentum favours Athelstone, although both suburbs recorded growth.
Looking back three years, Athelstone houses are +41.1% and St Marys houses +30.9%, so Athelstone has compounded faster than St Marys over the longer window.
Rental vacancy is 0.3% in St Marys and 0.5% in Athelstone, so landlords in St Marys face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.
Athelstone is the bigger suburb, with a population of 9,601 against 3,010, roughly 3.2 times the size of St Marys; a larger suburb usually means a deeper pool of buyers and tenants.
In short: St Marys for a lower purchase price, Athelstone for recent price momentum, St Marys for the tighter rental market. Which matters more depends on whether the investor is buying for cash flow, capital growth or affordability.
Keep exploring
- National investment guide - top suburbs across every metric
- Take the suburb finder quiz - 5 questions to match your goals
- How our investment score works
- Property investment glossary - every term defined
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