Birchgrove vs Castlereagh
Property investment comparison - Birchgrove, NSW 2041 vs Castlereagh, NSW 2749
Head-to-head across core investment metrics: Birchgrove wins 2, Castlereagh wins 2. 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 | Birchgrove | Castlereagh |
|---|---|---|
| Median house price | $3.1M | $3.1M |
| Median unit price | - | $715K |
| Gross rental yield (houses) | 2.31% | 1.60% |
| Gross rental yield (units) | 2.76% | 4.17% |
| 1-year house growth | -1.7%estimate | - |
| 3-year house growth | - | - |
| Vacancy rate | 0.8% | 2.5% |
| Population | 3,228 | 1,248 |
Birchgrove vs Castlereagh: what the numbers say
The median house price is $3.1M in Birchgrove and $3.1M in Castlereagh, so Castlereagh is the cheaper entry point, with Birchgrove houses about 1% dearer.
On cash flow, Birchgrove leads: houses there return a gross rental yield of 2.31%, compared with 1.60% in Castlereagh, a gap of 0.71 percentage points.
Rental vacancy is 0.8% in Birchgrove and 2.5% in Castlereagh, so landlords in Birchgrove face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.
Birchgrove is the bigger suburb, with a population of 3,228 against 1,248, roughly 2.6 times the size of Castlereagh; a larger suburb usually means a deeper pool of buyers and tenants.
In short: Birchgrove for rental income, Castlereagh for a lower purchase price, Birchgrove 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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