Skip to main content

Somerton Park vs Trinity Gardens

Property investment comparison - Somerton Park, SA 5044 vs Trinity Gardens, SA 5068

Head-to-head across core investment metrics: Somerton Park wins 1, Trinity Gardens wins 4. 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.

MetricSomerton ParkTrinity Gardens
Median house price$2.2M$1.8M
Median unit price$770K-
Gross rental yield (houses)1.87%2.26%
Gross rental yield (units)3.90%4.17%
1-year house growth+14.9%estimate+9.2%
3-year house growth-+9.4%
Vacancy rate1.3%1.0%
Population5,8111,264

Somerton Park vs Trinity Gardens: what the numbers say

The median house price is $2.2M in Somerton Park and $1.8M in Trinity Gardens, so Trinity Gardens is the cheaper entry point, with Somerton Park houses about 21% dearer.

On cash flow, Trinity Gardens leads: houses there return a gross rental yield of 2.26%, compared with 1.87% in Somerton Park, a gap of 0.39 percentage points.

Over the past year house prices moved +14.9% in Somerton Park (an estimate) and +9.2% in Trinity Gardens, so recent momentum favours Somerton Park, although both suburbs recorded growth.

Rental vacancy is 1.0% in Trinity Gardens and 1.3% in Somerton Park, so landlords in Trinity Gardens face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.

Somerton Park is the bigger suburb, with a population of 5,811 against 1,264, roughly 4.6 times the size of Trinity Gardens; a larger suburb usually means a deeper pool of buyers and tenants.

In short: Trinity Gardens for rental income, Trinity Gardens for a lower purchase price, Somerton Park for recent price momentum, Trinity Gardens for the tighter rental market. Which matters more depends on whether the investor is buying for cash flow, capital growth or affordability.

Keep exploring

Compare any 2-4 Australian suburbs

Build your own multi-suburb comparison with the full interactive tool.

Open interactive comparison
Somerton Park vs Trinity Gardens: Suburb Comparison 2026