Duplex architect
Duplex Architect Northern Beaches, Dual Occupancy Design & Approvals
The Northern Beaches is one of Sydney's most constrained, and most rewarding, places to build. Slope, bushfire, foreshore and tree controls all bear on a duplex, and the Northern Beaches LEP/DCP expects design that responds to the landscape. This is exactly the difficult-site work we specialise in.
Last updated: 15 June 2026
Northern Beaches planning notes for dual occupancy
- Steep, bushland and foreshore blocks are the norm, slope, BAL bushfire assessment and tree/vegetation controls frequently push projects to a DA.
- The Northern Beaches was formed from the former Manly, Warringah and Pittwater councils, so legacy LEP/DCP provisions can vary across the LGA.
- Design that steps with the land and retains canopy is far better received than a bulky, cut-and-fill approach.
On the Northern Beaches we assess slope, bushfire and vegetation together up front, these blocks reward difficult-site experience more than anywhere in Sydney.
Suburbs we cover in Northern Beaches
- Manly
- Dee Why
- Brookvale
- Frenchs Forest
- Narrabeen
- Mona Vale
- Avalon
Northern Beaches duplex FAQs
On many blocks, yes, but slope, bushfire and tree controls usually mean a DA with a considered, landscape-led design. This is our specialty. We confirm the governing legacy LEP and overlays first.
Thinking about a duplex in Northern Beaches?
Send us your address and we'll check the local controls, overlays and pathway, or just call for a preliminary read.