Building in Blackburn: Knockdown Rebuild, Granny Flat & Duplex Guide
Whitehorse City Council (VIC) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
400㎡
Max height
9m
Setbacks (front/side)
5m / 1.2m
DA timeline
14–28 wks
Fast-track CDC
Usually DA only
Build cost
$2400–$3500/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Box Hill/Nunawading. Very active KDR market. Strong Chinese community. Developer-friendly.
What can YOUR block in Blackburn fit?
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Get my free feasibility report →Frequently asked questions — Blackburn
Can I knock down and rebuild in Blackburn?
Generally yes — Whitehorse City Council requires a minimum lot of around 400㎡ for a standard knockdown rebuild, with a maximum building height of 9m. Most projects need a full DA (development application).
How long does council approval take in Blackburn?
A DA through Whitehorse City Council typically takes 14–28 weeks in practice.
How much does it cost to build in Blackburn?
Typical build costs around Blackburn run $2,400–$3,500 per square metre of floor area, plus demolition of roughly $16,000–$26,000. These are indicative ranges, not quotes.
Can I build a granny flat in Blackburn?
Most VIC councils allow secondary dwellings subject to lot size and overlay rules — check Whitehorse City Council's planning scheme or run a free feasibility report.
What are the main risks for building projects in Blackburn?
For the Whitehorse City Council area: heritage risk is low, flood risk is low, bushfire risk is low. Box Hill/Nunawading. Very active KDR market. Strong Chinese community. Developer-friendly.
Nearby areas under Whitehorse City Council
This page provides general guidance for the Whitehorse 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.