Building in Warrawee: Knockdown Rebuild, Granny Flat & Duplex Guide
Ku-ring-gai 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)
8.5m / 1.5m
DA timeline
24–48 wks
Fast-track CDC
Usually DA only
Build cost
$2800–$4500/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Large lot requirements. Tree preservation significant. Bushfire in northern parts.
What can YOUR block in Warrawee fit?
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Get my free feasibility report →Frequently asked questions — Warrawee
Can I knock down and rebuild in Warrawee?
Generally yes — Ku-ring-gai 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 Warrawee?
A DA through Ku-ring-gai Council typically takes 24–48 weeks in practice.
How much does it cost to build in Warrawee?
Typical build costs around Warrawee run $2,800–$4,500 per square metre of floor area, plus demolition of roughly $22,000–$38,000. These are indicative ranges, not quotes.
Can I build a granny flat in Warrawee?
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 Warrawee?
For the Ku-ring-gai Council area: heritage risk is medium, flood risk is low, bushfire risk is medium. Large lot requirements. Tree preservation significant. Bushfire in northern parts.
Nearby areas under Ku-ring-gai Council
This page provides general guidance for the Ku-ring-gai 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.