The NSW Government has approved a State Significant Development for three residential buildings at 159-167 Darley Street West, Mona Vale. The project will deliver 82 apartments, with just over 10% of the gross floor area allocated to affordable housing.
The approved scheme allows for six storeys across three buildings, with a total gross floor area of 10,928 square metres. The site was rezoned from low to medium density residential in April 2025, enabling this scale of development.
Flood mitigation measures form part of the approval, including flood proofing and suspending a section of one building above an overland flow path. The plans also include basement parking and bicycle storage.
The application attracted 146 submissions during exhibition, with the majority objecting to the proposal. Approval was granted on 14 June 2026.
For more information, search the application number (SSD-91496958) on the NSW Department of Planning, Housing and Infrastructure’s website.
| Application Number | SSD-91496958 |
|---|---|
| Project Title | Residential with in-fill affordable housing – 159-167 Darley Street West, Mona Vale |
| Project Status | Determined |
| Decision | Approved |
| Determination Date | 14/06/2026 |
| Project Type | In-fill Affordable Housing |
| LGA | Northern Beaches |
| Site Area | 6,122 sqm |
|---|---|
| GFA | 10,928 sqm |
| Dwellings | 82 |
| Affordable Housing | 10.66% |
| Buildings | 3 |
| Storeys | 6 |
| Building Height | 21.17m |
| Parking | 164 car | 27 bike |
| Basement Levels | 3 |
| Jobs | 210 construction |
| Capital Investment | $95.4 million |
