Castletown vs Koongamia
Property investment comparison - Castletown, WA 6450 vs Koongamia, WA 6056
Head-to-head across core investment metrics: Castletown wins 1, Koongamia 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 | Castletown | Koongamia |
|---|---|---|
| Median house price | $650K | $650K |
| Median unit price | - | - |
| Gross rental yield (houses) | 5.00% | - |
| Gross rental yield (units) | 3.85% | 5.19% |
| 1-year house growth | +14.7% | +17.9% |
| 3-year house growth | +53.0% | +67.2% |
| Vacancy rate | 0.2% | 1.2% |
| Population | 3,968 | 985 |
Castletown vs Koongamia: what the numbers say
Houses cost about the same in both suburbs: the median house price is $650K in Castletown and $650K in Koongamia.
Over the past year house prices moved +14.7% in Castletown and +17.9% in Koongamia, so recent momentum favours Koongamia, although both suburbs recorded growth.
Looking back three years, Castletown houses are +53.0% and Koongamia houses +67.2%, so Koongamia has compounded faster than Castletown over the longer window.
Rental vacancy is 0.2% in Castletown and 1.2% in Koongamia, so landlords in Castletown face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.
Castletown is the bigger suburb, with a population of 3,968 against 985, roughly 4.0 times the size of Koongamia; a larger suburb usually means a deeper pool of buyers and tenants.
In short: Koongamia for recent price momentum, Castletown 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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