Building in Mount Druitt: Knockdown Rebuild, Granny Flat & Duplex Guide
Blacktown City Council (NSW) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
450㎡
Max height
8.5m
Setbacks (front/side)
6m / 0.9m
DA timeline
12–26 wks
Fast-track CDC
Often available
Build cost
$2200–$3200/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
CDC available for lots >450sqm in R2 zone. Good for dual occupancy on 600sqm+.
What can YOUR block in Mount Druitt fit?
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Get my free feasibility report →Frequently asked questions — Mount Druitt
Can I knock down and rebuild in Mount Druitt?
Generally yes — Blacktown City Council requires a minimum lot of around 450㎡ for a standard knockdown rebuild, with a maximum building height of 8.5m. Fast-track CDC approval is available for fully compliant designs.
How long does council approval take in Mount Druitt?
A DA through Blacktown City Council typically takes 12–26 weeks in practice. A compliant CDC pathway is usually around 2–4 weeks instead.
How much does it cost to build in Mount Druitt?
Typical build costs around Mount Druitt run $2,200–$3,200 per square metre of floor area, plus demolition of roughly $18,000–$28,000. These are indicative ranges, not quotes.
Can I build a granny flat in Mount Druitt?
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 Mount Druitt?
For the Blacktown City Council area: heritage risk is low, flood risk is medium, bushfire risk is low. CDC available for lots >450sqm in R2 zone. Good for dual occupancy on 600sqm+.
Nearby areas under Blacktown City Council
This page provides general guidance for the Blacktown City 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.