What is a knockdown rebuild (KDR) in Adelaide?

A knockdown rebuild is demolishing your existing home and building new on the same block. In Adelaide, a typical KDR costs $600k-$1M total ($18k-$35k demolition + $550k-$950k new build) and takes 14-22 months. Popular in Charles Sturt, Marion, Salisbury and Tea Tree Gully where large mid-century blocks suit modern homes. Character or heritage overlay areas may not allow KDR.

Adelaide KDR Guide

What Is A Knockdown Rebuild In Adelaide?

The full KDR process for metro Adelaide - real 2026 pricing, timelines, council traps, and how to know if your block is a good KDR candidate.

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By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580

Last reviewed: 28 February 2026 · How we research

When a KDR beats renovating

Pre-1975 timber-frame homes with asbestos, rising damp and dated stumps. Large blocks (700m²+) suited to modern larger homes. Any home where the renovation scope covers roof + floor + walls + wet areas - at that point you're rebuilding at renovation prices. Character overlay does NOT apply (check PlanSA first - many Adelaide inner-ring suburbs are protected).

Where KDR is popular in Adelaide

Northern growth councils - Salisbury, Playford, Tea Tree Gully - offer large post-war blocks with straightforward planning. Southern beach councils - Marion, Onkaparinga - popular for coastal-lifestyle KDRs. Charles Sturt inner-west (Findon, Seaton, Fulham) is the busiest KDR corridor. Character areas in Prospect, Burnside, Norwood usually NOT eligible without full heritage assessment.

The KDR process end-to-end

(1) Confirm KDR eligibility - PlanSA property report, character overlay check, tree survey. (2) Sign KDR builder + design contract. (3) Design + working drawings (10-16 weeks). (4) Council approval (4-16 weeks depending on council). (5) Disconnect services + arrange temp accommodation. (6) Demolition (2-4 weeks). (7) New build (32-56 weeks). (8) Certificate of Occupancy + move in. Total: 14-22 months.

Cost breakdown

Demolition: $18k-$35k (includes asbestos if present, tree clearing, spoil removal). Service disconnection/reconnection: $4k-$8k. Temp accommodation 12-18 months: $28k-$60k. New build: $550k-$950k depending on spec. Site works on existing block: usually cheaper than a titled block ($8k-$20k lower). Total budget: $600k-$1.05M for a mid-size home.

What to Budget For When Building a New Home

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What to Budget For When Building a New Home

Getting your budget right is the first real step in the building journey - but most people don’t know where to start. In this episode, we break down the full process of setting your game plan, from confirming your finance capacity to comparing quotes, and share a free Google Sheets budgeting template to help you stay on track from day one.

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Frequently asked

How much does a knockdown rebuild cost in Adelaide?

Total KDR budget in metro Adelaide is typically $600,000 to $1,050,000 for a mid-size (200-240m²) single-storey home. Volume-builder KDR packages start around $550k inclusive of demolition; custom KDRs can exceed $1.4M.

How long does a knockdown rebuild take in Adelaide?

Typical KDR timeline is 14-22 months from signed contract to keys. Design + approval: 4-8 months. Demolition: 2-4 weeks. Rebuild: 8-14 months. Add 2-4 months for character or heritage overlay assessments.

Can I do a KDR on a heritage-listed property?

Almost never for State Heritage Places or Local Heritage Places. Character Area lots require a Statement of Heritage Impact and demolition may still be refused. Always check PlanSA property report BEFORE contracting a KDR builder or committing to demolition.

Do I need council approval to demolish my house in Adelaide?

Yes. Demolition requires its own approval through PlanSA in addition to the new-build Development Approval. Some councils require a demolition method statement, tree survey and neighbour notification. Budget 2-4 weeks for demolition consent on top of the new-build approval time.