Building in Kogarah: Knockdown Rebuild, Granny Flat & Duplex Guide
Georges River Council (NSW) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
500㎡
Max height
9.5m
Setbacks (front/side)
5.5m / 0.9m
DA timeline
16–36 wks
Fast-track CDC
Often available
Build cost
$2500–$3800/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Flood overlay affects many lots near waterways. Heritage conservation areas in Hurstville.
What can YOUR block in Kogarah fit?
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Get my free feasibility report →Frequently asked questions — Kogarah
Can I knock down and rebuild in Kogarah?
Generally yes — Georges River Council requires a minimum lot of around 500㎡ for a standard knockdown rebuild, with a maximum building height of 9.5m. Fast-track CDC approval is available for fully compliant designs.
How long does council approval take in Kogarah?
A DA through Georges River Council typically takes 16–36 weeks in practice. A compliant CDC pathway is usually around 2–4 weeks instead.
How much does it cost to build in Kogarah?
Typical build costs around Kogarah run $2,500–$3,800 per square metre of floor area, plus demolition of roughly $20,000–$32,000. These are indicative ranges, not quotes.
Can I build a granny flat in Kogarah?
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 Kogarah?
For the Georges River Council area: heritage risk is medium, flood risk is high, bushfire risk is low. Flood overlay affects many lots near waterways. Heritage conservation areas in Hurstville.
Nearby areas under Georges River Council
This page provides general guidance for the Georges River 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.