Mortdale vs Thornleigh
Property investment comparison - Mortdale, NSW 2223 vs Thornleigh, NSW 2120
Head-to-head across core investment metrics: Mortdale wins 2, Thornleigh 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 | Mortdale | Thornleigh |
|---|---|---|
| Median house price | $1.9M | $1.9M |
| Median unit price | $815K | $795K |
| Gross rental yield (houses) | 2.55% | 2.52% |
| Gross rental yield (units) | 4.25% | 4.70% |
| 1-year house growth | +7.2%estimate | -4.7% |
| 3-year house growth | - | -4.4% |
| Vacancy rate | 0.9% | 0.7% |
| Population | 10,745 | 8,898 |
Mortdale vs Thornleigh: what the numbers say
Houses cost about the same in both suburbs: the median house price is $1.9M in Mortdale and $1.9M in Thornleigh.
For units, Mortdale sits at a median of $815K against $795K in Thornleigh, which makes Thornleigh the more affordable unit market and Mortdale the pricier one.
Gross rental yield on houses is effectively level, at 2.55% in Mortdale and 2.52% in Thornleigh, so neither suburb has a cash flow edge on houses.
Over the past year house prices moved +7.2% in Mortdale (an estimate) and -4.7% in Thornleigh, so recent momentum favours Mortdale, while Thornleigh went backwards.
Rental vacancy is 0.7% in Thornleigh and 0.9% in Mortdale, so landlords in Thornleigh face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.
Mortdale is the bigger suburb, with a population of 10,745 against 8,898, larger than Thornleigh; a larger suburb usually means a deeper pool of buyers and tenants.
In short: Mortdale for recent price momentum, Thornleigh 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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