Background
Prosker Pty Ltd appealed against Mosman Municipal Council’s deemed refusal of a development application for 48–50 Almora Street, Mosman. The proposal was to demolish two houses and construct an eight-storey residential flat building with 14 apartments, including three affordable housing units, and three basement parking levels.
The site was in the Housing SEPP’s low and mid-rise housing inner area and in an R3 Medium Density Residential zone. The proposal complied with the applicable Housing SEPP numerical height and floor-space-ratio limits, including a 30% affordable-housing bonus. Council nevertheless opposed it on character, scale, view, heritage and related grounds.
The Court’s Holding
Acting Commissioner Miller dismissed the appeal and refused the application. Although the development was permissible and met the relevant numerical standards, it was not compatible with the precinct’s desired future character under the State Environmental Planning Policy (Housing) 2021.
The Court held that the relevant precinct included not only land subject to the low and mid-rise provisions but also adjacent C4 Environmental Living land and nearby heritage items that would remain low scale. An eight-storey, 28.6-metre building at this edge location would create an abrupt and unacceptable transition, amounting to overdevelopment of the relatively small site.
As independent additional grounds, the Court found unacceptable impacts on the significant public view corridor down Almora Street toward Middle Harbour and on the heritage significance and streetscape presence of the adjoining heritage-listed house at 52 Almora Street.
Key Takeaways
- Compliance with Housing SEPP height and floor-space-ratio standards does not itself establish compatibility with desired future character.
- Assessment of a transitional precinct may require consideration of adjoining land outside the low and mid-rise housing area, including land that will remain low density.
- Affordable-housing bonuses may worsen an otherwise abrupt scale transition and remain subject to merit assessment.
- Protected public views and the setting of nearby heritage items can independently justify refusal.
Why It Matters
The decision confirms that the Housing SEPP’s development incentives do not displace the need for a site-specific assessment under the Environmental Planning and Assessment Act 1979 (NSW). At the edge of an uplift area, proponents must demonstrate a genuine transition to adjoining low-scale or heritage-sensitive development.
For projects relying on affordable-housing bonuses, the case illustrates that added height and density can be refused where they materially intensify adverse character, public-view and heritage effects.