Alderley vs Mermaid Beach
Property investment comparison - Alderley, QLD 4051 vs Mermaid Beach, QLD 4218
Head-to-head across core investment metrics: Alderley wins 4, Mermaid Beach wins 0. 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 | Alderley | Mermaid Beach |
|---|---|---|
| Median house price | $1.7M | - |
| Median unit price | $855K | $1.1M |
| Gross rental yield (houses) | 2.46% | 2.45% |
| Gross rental yield (units) | 3.71% | - |
| 1-year house growth | +12.7% | +7.7%estimate |
| 3-year house growth | +35.9% | - |
| Vacancy rate | 1.8% | 2.1% |
| Population | 6,748 | 7,329 |
Alderley vs Mermaid Beach: what the numbers say
For units, Alderley sits at a median of $855K against $1.1M in Mermaid Beach, which makes Alderley the more affordable unit market and Mermaid Beach the pricier one.
Gross rental yield on houses is effectively level, at 2.46% in Alderley and 2.45% in Mermaid Beach, so neither suburb has a cash flow edge on houses.
Over the past year house prices moved +12.7% in Alderley and +7.7% in Mermaid Beach (an estimate), so recent momentum favours Alderley, although both suburbs recorded growth.
Rental vacancy is 1.8% in Alderley and 2.1% in Mermaid Beach, so landlords in Alderley face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.
Mermaid Beach is the bigger suburb, with a population of 7,329 against 6,748, larger than Alderley; a larger suburb usually means a deeper pool of buyers and tenants.
In short: Alderley for recent price momentum, Alderley 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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