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. 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. 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. 3

    Demolition and site prep

    Disconnect services, remove asbestos if present, demolish and clear. Typically $20k - $45k depending on size, access and materials.

  4. 4

    Council approval and engineering

    Planning and building approvals, soil tests and engineering for the new home. Established suburbs can mean tighter overlays.

  5. 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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