As the first ferries glide away from Mosman Bay, this small harbour suburb is already setting a national record, with home buyers spending $1.58 billion on Mosman houses in a single year, more than any other suburb in Australia.
Cotality’s Best of the Best 2025 report, released 4 December 2025, tracked house sales across the 12 months to September 2025 and placed Mosman first by total value. Some 229 Mosman house sales made up that $1.58 billion figure, keeping the suburb ahead of Vaucluse and Bellevue Hill.
Morning Movement and Million-Dollar Homes
Early in the day, locals head to Mosman Bay Wharf for the F6 ferry to Circular Quay, a route run by Sydney Ferries that keeps the suburb closely tied to the CBD. The same harbour views that greet commuters also drive property prices. Cotality data showed the median Mosman house was valued at $6.1 million in November 2025, putting even standard family homes into a rare price bracket.
That mix of harbour access and high values means every sale carries weight. With close to 14,000 properties across the suburb, Mosman is large enough to generate steady sales, yet still tightly held. Cotality recorded a dwelling turnover rate of 4.1 per cent, below the national average, indicating that many households remain in their homes for years.
Green Spaces and Long-Term Living
By mid-morning, walkers move through Georges Head, where NSW National Parks and Wildlife Service maintains historic sites and harbour lookouts just minutes from local streets. These shared spaces help explain why so many homes remain in the same families. Buyers are not just chasing views; they are seeking the everyday rhythm of a place that blends outdoor access with city convenience.
Later in the day, children and retirees pass through Mosman’s library and council venues, where local events and programs run year-round. These routines sit behind the numbers. While other prestige suburbs rely on one-off trophy sales, Mosman’s lead comes from both steady activity and high prices.
Even though the total value of Mosman sales dipped slightly from 2024, it has remained at the top of Cotality’s national ranking for five consecutive years, underscoring the strength of demand despite limited supply.
As evening settles across the harbour, Mosman’s property story looks much like its daily life: calm on the surface, tightly held underneath, and quietly expensive in every direction.
Published 13-Jan-2026
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