Mathieson Property unveils Dian Rose Bay apartment development

Apartment development applications continue to tally up in Rose Bay following the NSW Gov's 2025 update to the Low and Mid-Rise Housing Policy.

Some $200 million worth of developments were filed in the space of four weeks at the back end of last year, with the likes of Fyve, HSN, Luxcon and Fortis all seeking to creating new apartment buildings.

The latest plans are for an amalgamated 3,105 sqm site across Conway Avenue, Fernleigh Avenue, and Carlisle Street. Developer Mathieson Property is planning Dian, 70 apartments across a new eight-storey building, perched on a ridgeline within walking distance of Rose Bay Town Centre.

The State Significant Development Application (SSDA), includes one-, two-, three- and four-bedroom configurations. Over 15 per cent will be dedicated as affordable, as per the NSW Government's push for affordable housing. The 17 apartments will be managed by a community housing provider for 15 years following completion of the building.

MHNDU has designed the building around three central cores, with lower-level apartments arranged to maximise corner balconies and cross-ventilation. Upper levels are configured with dual north–south aspects to capture harbour views and solar access.

Private open space is a key feature of the scheme, with generous balconies and terraces throughout. Five ground-floor apartments would include private pools, while one upper-level residence will feature a rooftop terrace and pool. A communal room and adjoining landscaped outdoor terraces provide shared open space for residents.

The site sits around 365 metres walking distance of Rose Bay Town Centre and around 312 metres from regular bus services on New South Head Road, meeting the accessible area criteria under the Housing SEPP.

In early 2025, the NSW Government implemented significant changes to its Low and Mid-Rise Housing Policy, altering planning controls to allow greater density for new apartment projects within an 800-metre walking distance of stations and town centres in the Woollahra Local Government Area, overriding existing local controls. Buildings are now permitted to rise up to six storeys within 400 metres of a station or centre, or eight storeys where affordable housing is incorporated, and up to four storeys within the 401 to 800 metre radius, which can increase to six storeys with affordable housing.