O'Sullivan Beach (SA 5166): property prices & suburb profile

O'Sullivan Beach property prices

The typical O'Sullivan Beach house sold for around $790,000 in the year to 2026-Q2, +175.3% over 10 years and +146.1% over 5 years.

• Medians are published by Land Services SA per suburb; we do not have individual sale records for this state, so there is no street-level breakdown on this page (our New South Wales pages have one).
• The headline figure is a sales-weighted average of the last four quarterly medians, not a median of individual sales, because one quiet quarter in a single suburb can move a quarterly median by more than the market did. The chart below plots each quarter as published.
• Change over time reflects what sold in each period, not the value of any one home: a run of large or small homes moves it.
• Periods with fewer than 5 recorded sales are excluded.

O'Sullivan Beach medians by quarter

The most recent quarter on record for O'Sullivan Beach is 2026-Q2.

• Sale counts are shown so you can judge how solid each median is.

Who lives in O'Sullivan Beach

O'Sullivan Beach has a median age of 44 and a median household income of $1,072 a week.

• Figures labelled O'Sullivan Beach are for the suburb boundary itself (ABS 2021 Census). Anything labelled SA2 or postcode covers a wider area: SA2 "Christies Beach" and postcode 5166 both extend beyond O'Sullivan Beach.
• SEIFA decile 1 is the lowest tenth of Australian areas on that index and 10 the highest. The four indices measure different things and often disagree, which is why all four are shown: a suburb can rank high on education and occupation while ranking mid on economic resources.

Schools in O'Sullivan Beach

The 2 schools in O'Sullivan Beach sit at the 50th percentile nationally on ACARA's socio-educational index.

• ICSEA is ACARA's socio-educational index (average 1000). It describes the family backgrounds of the students enrolled, NOT how well a school teaches: a lower ICSEA means a less advantaged intake, not a worse school.
• Percentiles are ACARA's own national ranking, so the Australia bar is a published figure rather than our arithmetic. Each area shows the median of the mainstream schools sitting inside it; special schools are listed in the table but excluded from the medians.
• Public school intake zones are not published in our dataset for this state, so confirm catchments with the school.

Suburbs near O'Sullivan Beach

O'Sullivan Beach's typical house price of $790,000 is the 48th highest of the 54 Adelaide South suburbs we cover.

• Aberfoyle Park 5159

  $909,000 typical house price

• Aldinga Beach 5173

  $855,000 typical house price

• Belair 5052

  $1,293,000 typical house price

• Bellevue Heights 5050

  $1,156,000 typical house price

• Blackwood 5051

  $1,056,000 typical house price

• Christie Downs 5164

  $749,000 typical house price

• Christies Beach 5165

  $906,000 typical house price

• Clarence Gardens 5039

  $1,463,000 typical house price

All Adelaide South suburb research

O'Sullivan Beach: common questions

How much does a house cost in O'Sullivan Beach?

About $790,000 across the 12 months to 2026-Q2, from 41 recorded sales. That is a sales-weighted average of the four quarterly medians published by Land Services SA: a single quarter in one suburb can swing on a handful of sales.

Have O'Sullivan Beach prices gone up?

Prices have risen 175.3% over 10 years and moved +146.1% over 5 years, comparing the latest rolling year with the same window a decade earlier. These movements reflect the mix of homes sold, not the change in value of a specific property.

Can I see O'Sullivan Beach prices street by street?

Not yet. SA publishes suburb-level medians rather than individual sale records, so street-level medians are only available on our New South Wales pages.

Which schools are in O'Sullivan Beach?

O'Sullivan Beach has 2 ACARA-registered schools: O'Sullivan Beach Primary School, Southern Montessori School.