Building in Strathfield: Knockdown Rebuild, Granny Flat & Duplex Guide
Strathfield Council (NSW) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
650㎡
Max height
9m
Setbacks (front/side)
7.5m / 1.2m
DA timeline
24–52 wks
Fast-track CDC
Often available
Build cost
$2800–$4200/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
High-value KDR market. Multiple Heritage Conservation Areas (HCAs) — CDC not available in HCA lots. Setback is average of adjacent properties (not fixed 7.5m). Asbestos common in pre-1987 homes — budget $8k-20k for asbestos removal. Section 7.11 contributions ~$12k-18k. OSD stormwater tank required (~$8k-15k). Actual DA processing 6-12 months despite 16-week statutory target.
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Get my free feasibility report →Frequently asked questions — Strathfield
Can I knock down and rebuild in Strathfield?
Generally yes — Strathfield Council requires a minimum lot of around 650㎡ 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 Strathfield?
A DA through Strathfield Council typically takes 24–52 weeks in practice. A compliant CDC pathway is usually around 2–4 weeks instead.
How much does it cost to build in Strathfield?
Typical build costs around Strathfield run $2,800–$4,200 per square metre of floor area, plus demolition of roughly $28,000–$50,000. These are indicative ranges, not quotes.
Can I build a granny flat in Strathfield?
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 Strathfield?
For the Strathfield Council area: heritage risk is high, flood risk is low, bushfire risk is low. High-value KDR market. Multiple Heritage Conservation Areas (HCAs) — CDC not available in HCA lots. Setback is average of adjacent properties (not fixed 7.5m). Asbestos common in pre-1987 homes — budget $8k-20k for asbestos removal. Section 7.11 contributions ~$12k-18k. OSD stormwater tank required (~$8k-15k). Actual DA processing 6-12 months despite 16-week statutory target.
Nearby areas under Strathfield Council
This page provides general guidance for the Strathfield 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.