Onkaparinga house prices, 2026.

The median house price across the Onkaparinga region is $940,000. That figure is the median of 39 suburb medians, each drawn from government sales records, rather than an average, so a handful of waterfront or acreage suburbs cannot drag it up. The median unit price is $247,680. The median house rent is $340 a week.

Over the past twelve months the typical Onkaparinga suburb rose by 11.5% in median house price. The spread between suburbs is wide: Coromandel Valley recorded +24.7%, the fastest of the established suburbs with plausible growth data. A change beyond 25% in a year, the mark of a handful of sales, is left out of the growth figures.

Among established suburbs, the most affordable is Hackham West at $785,000 and the dearest is Craigburn Farm at $1,745,000, a 2.2-times gap across the one region. The suburbs with the most recorded house sales in the latest period are Morphett Vale (123), Aldinga Beach (57), Flagstaff Hill (50); the table below lists the twenty busiest with their medians.

Source: suburb medians from the SA valuer-general or state sales records and the ABS, aggregated by Your Property Guide, sales data last refreshed October 2026; page generated 22 October 2026. Only the 39 of 52 tracked suburbs whose own page publishes a median contribute to price figures: a verified sales source, and at least five recorded sales where the count is reported.