Sydney Harbour's skinniest harbour front listed in Darling Point

Sydney Harbour's skinniest waterfront at Darling Point has been listed for sale.

The four-level home at 3A Carthona Avenue has its own sandy beach.

Set on a 207 sqm block, the home was built by property developer Bill Shipton in the 1980s.

The four-bedroom, four-bathroom property was bought by the current owner, the Dicker Data co-founder Fiona Brown, for $6.34 million in 2014.

It was best known when owned by Lady Susan Renouf. She bought in 1994, and sold in 1997 for $2.9 million to Melbourne socialite Dianne Allen for $2.9 million in 1997.

In 2009, it sold to the Melbourne-based landscaper Jack Merlo for $6.15 million.