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O'sullivan Beach suburb profile

O'Sullivan Beach is a quiet coastal suburb in Adelaide's southern suburbs on Gulf St Vincent, part of the City of Onkaparinga. Its long sandy foreshore and coastal reserve set the tone, while low-profile, mostly single-storey homes recall its origins as a seaside holiday pocket now settled by families and retirees alongside people who work in nearby urban and industrial areas. The lifestyle is relaxed and everyday, focused on beachside walks, fishing and local parks, with a modest shopping strip and community facilities close at hand and straightforward road and public transport links for commuting.

O'sullivan Beach property market performance

O'Sullivan Beach has relatively few recent unit sales, so there isn't enough recent data to publish a reliable median unit price. On the house side, the median house price is $850,000.

Over the last three months, 12 houses were sold. Houses recorded a median time on market of 39 days over the last 12 months; there isn't sufficient recent unit sales data to report comparable sales or days on market for units.

The rental market in O'Sullivan Beach showed house rents averaging $575 a week over the last 12 months, up a modest 4.5%.

HousesUnits
Median price
Past 3 months
$850KN/A
Change in value
Past 12 months
N/AN/A
Sold
Past 3 months
12N/A
Median days on market
Past 12 months
39N/A
Average rent
Past 12 months
$575N/A
Change in rent
Past 12 months
4.5%N/A

5 year median price trend for houses and units

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O'sullivan Beach demographics

O'Sullivan Beach is a community of 1,844 people with a median age of 44 and a median household income of $1,072 a week, roughly $55,744 a year.

Among families, couple families without children are the largest group at 41.3%, followed by couple families with children at 31.0%. One-parent families make up 26.2%, while other families account for 1.5%.

Homes in O'Sullivan Beach are predominantly owner-occupied: 70.0% are owner-occupied (34.4% owned outright and 35.6% owned with a mortgage), and 30.0% are rented.

Suburbs near O'sullivan Beach

Some popular suburbs near O'sullivan Beach include:

How does O'sullivan Beach compare to nearby suburbs?

  • Median house prices: O'sullivan Beach’s median house price is 6.3% higher than Christie Downs’s.
  • House price growth: Over the past 12 months, house prices in O'sullivan Beach have grown 5.3% higher than in Noarlunga Downs.
  • Selling speed for houses: Properties in O'sullivan Beach are selling 25.0% faster than in Christies Beach.
  • House price growth: Over the past 12 months, house prices in O'sullivan Beach have grown 28.2% lower than the average rate of growth across Adelaide.

Choose the right real estate agents in O'sullivan Beach

In O'sullivan Beach ,25 agents are actively selling property, but a small number do the heavy lifting. Just 5 agents handled 75.0% of all sales in the past year, giving them a strong presence and deep experience in the local market.

Commission rates usually sit between 1.63% and 2.75%. Comparing agents and understanding what’s included in their fee structure can help you find the right mix of service, value, and motivation—without compromising on outcomes.

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