Building in North Sydney: Knockdown Rebuild, Granny Flat & Duplex Guide
North Sydney Council (NSW) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
600㎡
Max height
9.5m
Setbacks (front/side)
7.5m / 1.2m
DA timeline
24–52 wks
Fast-track CDC
Usually DA only
Build cost
$3200–$5500/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Many lots heritage listed. KADS (Knock and Drill) is tightly controlled here.
What can YOUR block in North Sydney fit?
Enter your street address and our AI checks the official cadastre (your measured lot size), zoning, heritage and flood overlays — then gives you costs, approval pathway and next steps. Free, 2 minutes, no signup. 支持中文。
Get my free feasibility report →Frequently asked questions — North Sydney
Can I knock down and rebuild in North Sydney?
Generally yes — North Sydney Council requires a minimum lot of around 600㎡ for a standard knockdown rebuild, with a maximum building height of 9.5m. Most projects need a full DA (development application).
How long does council approval take in North Sydney?
A DA through North Sydney Council typically takes 24–52 weeks in practice.
How much does it cost to build in North Sydney?
Typical build costs around North Sydney run $3,200–$5,500 per square metre of floor area, plus demolition of roughly $24,000–$42,000. These are indicative ranges, not quotes.
Can I build a granny flat in North Sydney?
In NSW, a secondary dwelling (granny flat) of up to 60㎡ can usually be approved via fast-track CDC on lots of 450㎡ or more, subject to overlays such as heritage, flood and bushfire.
What are the main risks for building projects in North Sydney?
For the North Sydney Council area: heritage risk is high, flood risk is low, bushfire risk is low. Many lots heritage listed. KADS (Knock and Drill) is tightly controlled here.
Nearby areas under North Sydney Council
This page provides general guidance for the North Sydney Council area and is not advice about any specific property. Planning controls change — always confirm with council or run a block-specific feasibility report. © 2026 AusBuildCircle 澳洲建房圈.