Building in Bankstown: Knockdown Rebuild, Granny Flat & Duplex Guide
Canterbury-Bankstown Council (NSW) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
450㎡
Max height
9m
Setbacks (front/side)
4.5m / 0.9m
DA timeline
16–32 wks
Fast-track CDC
Often available
Build cost
$2300–$3400/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Flood check critical near Georges River. Heritage items scattered across older suburbs.
What can YOUR block in Bankstown fit?
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Get my free feasibility report →Frequently asked questions — Bankstown
Can I knock down and rebuild in Bankstown?
Generally yes — Canterbury-Bankstown Council requires a minimum lot of around 450㎡ for a standard knockdown rebuild, with a maximum building height of 9m. Fast-track CDC approval is available for fully compliant designs.
How long does council approval take in Bankstown?
A DA through Canterbury-Bankstown Council typically takes 16–32 weeks in practice. A compliant CDC pathway is usually around 2–4 weeks instead.
How much does it cost to build in Bankstown?
Typical build costs around Bankstown run $2,300–$3,400 per square metre of floor area, plus demolition of roughly $18,000–$30,000. These are indicative ranges, not quotes.
Can I build a granny flat in Bankstown?
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 Bankstown?
For the Canterbury-Bankstown Council area: heritage risk is medium, flood risk is high, bushfire risk is low. Flood check critical near Georges River. Heritage items scattered across older suburbs.
Nearby areas under Canterbury-Bankstown Council
This page provides general guidance for the Canterbury-Bankstown 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.