Building in Adelaide: Knockdown Rebuild, Granny Flat & Duplex Guide
City of Adelaide (SA) · Indicative rules and costs for homeowners · 中文报告同样支持
Min lot (KDR)
200㎡
Max height
10m
Setbacks (front/side)
3m / 0m
DA timeline
16–36 wks
Fast-track CDC
Usually DA only
Build cost
$2200–$3500/㎡
📊 Indicative ranges from council planning controls and recent market data — not quotes, and individual blocks vary.
Inner Adelaide. Heritage state significant areas. Development Plan Consent required.
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Get my free feasibility report →Frequently asked questions — Adelaide
Can I knock down and rebuild in Adelaide?
Generally yes — City of Adelaide requires a minimum lot of around 200㎡ for a standard knockdown rebuild, with a maximum building height of 10m. Most projects need a full DA (development application).
How long does council approval take in Adelaide?
A DA through City of Adelaide typically takes 16–36 weeks in practice.
How much does it cost to build in Adelaide?
Typical build costs around Adelaide run $2,200–$3,500 per square metre of floor area, plus demolition of roughly $14,000–$24,000. These are indicative ranges, not quotes.
Can I build a granny flat in Adelaide?
Most SA councils allow secondary dwellings subject to lot size and overlay rules — check City of Adelaide's planning scheme or run a free feasibility report.
What are the main risks for building projects in Adelaide?
For the City of Adelaide area: heritage risk is high, flood risk is low, bushfire risk is low. Inner Adelaide. Heritage state significant areas. Development Plan Consent required.
Nearby areas under City of Adelaide
This page provides general guidance for the City of Adelaide 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.