National guide · Australia
Knockdown rebuild, explained
Keep the location you love, replace the house that no longer works. Here's what a knockdown rebuild (KDR) actually involves across Australia - the process, the timeline, the costs, and when it beats renovating.
The process, step by step
- 1
Check the block is worth keeping
KDR makes sense when you love the location but the house is past saving. Confirm zoning, overlays and that a new home is permissible.
- 2
Design and choose a builder
Pick a builder experienced in knockdown rebuilds - demolition coordination and established-suburb site works are their own skill set.
- 3
Demolition and site prep
Disconnect services, remove asbestos if present, demolish and clear. Typically $20k - $45k depending on size, access and materials.
- 4
Council approval and engineering
Planning and building approvals, soil tests and engineering for the new home. Established suburbs can mean tighter overlays.
- 5
Build the new home
Slab to handover, usually 10 - 14 months. Total KDR timelines run 12 - 20 months once demolition and approvals are counted.
Is a knockdown rebuild worth it?
KDR tends to win when
- You love the street, schools and neighbours
- The existing home is small, tired or structurally poor
- A renovation would cost most of a rebuild anyway
- No stamp duty on land you already own
Renovate instead when
- The home has good bones and only needs cosmetic work
- The block has heavy overlays that limit a new build
- You can't live elsewhere for 12 - 20 months
- Heritage listing prevents demolition
KDR builders in your state
Ready to explore it on your block?
Our knockdown-rebuild guidance and builder matching are live in South Australia and Victoria, and expanding across Australia. Open your state for local costs, council process and KDR-experienced builders.
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