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KNOCKDOWN REBUILD COST SYDNEY · 2026 GUIDE

Knockdown rebuild cost in Sydney (2026): the full breakdown

Sydney knockdown rebuild costs 2026: about A$480k–A$1.2m all-in, demolition A$10k–A$40k, A$2,000–A$4,300/m² to build, plus rent and council charges.

Read the breakdown ↓Ask AUD Build

Published by AUD Build · Figures reviewed 26 October 2026

Short answer

Short answer (as of October 2026): published Sydney guides put a typical knockdown rebuild — demolishing one house and building one new 180–300 m² home — at roughly A$480,000 to A$1.2 million all-in, with premium and architectural rebuilds from about A$1.2–1.5 million upward. Demolition is usually quoted at A$10,000–A$40,000 for the structure before asbestos, and new construction at about A$2,000–A$4,300 per m² in most guides, while North Shore builders quote A$3,200–A$5,500 per m². Most "all-in" figures exclude council contributions and temporary rent; a year renting a house at the Greater Sydney median of A$800 a week is about A$41,600.

These are budgeting ranges from the dated sources listed at the end, not a quote. Site conditions, council area, floor area and specification decide where your project lands.

What the 2026 guides say: all-in totals

Project (demolition + new home, excluding land)Published all-in rangeSource
180 m² 4-bed, medium brick veneer, Western SydneyA$490k–560kBuildana [1]
220 m² 4-bed, medium full brickA$600k–680kBuildana [1]
260 m² 4-bed double storey, medium spec (May 2026 refresh)A$650k–842kBuildana [1]
300 m² 4-bed double storey, high spec (May 2026 refresh)A$925k–1.177mBuildana [1]
200 m² 4-bed, project-home specA$560k–650kMNA Construction [2]
220 m² 4-bed, custom mid-rangeA$700k–850kMNA Construction [2]
260 m² 5-bed, mid-range to premiumA$900k–1.1mMNA Construction [2]
300 m²+ architecturalA$1.3m+MNA Construction [2]
4-bed, 2.5-bath (220–280 m²), standard / premium finishesA$640k–820k / A$820k–1.05mPearson Industries [3]
5-bed (290–400 m²), standard / premium finishesA$820k–1.05m / A$1.05m–1.5m+Pearson Industries [3]
180 m² medium spec, Fairfield or Liverpool, itemisedA$480,100–606,600giantA [4]
Western Sydney / North Shore and Northern BeachesA$400k–900k / A$650k–2.0mThe Quote Yard [5]

What these totals include differs: Buildana's include demolition, an asbestos allowance, approvals, construction, basic external works and GST but exclude s7.11/7.12 council contributions [1]; Pearson's exclude landscaping, pools and significant retaining [3].

For context, the Australian Bureau of Statistics found the average approval value of a detached house built in a knockdown rebuild was A$729,121 across July 2019–June 2025 nationally, more than double other detached houses; by 2024/25 the gap had widened to 132% [12]. That is the declared construction value, not the full project cost. National builder guides sit lower than the Sydney figures: G.J. Gardner says rebuilds across Australia typically start from the mid-A$300,000s and that Sydney costs more than the national average [10], and Provincial Homes puts most Australian rebuilds at A$350,000–750,000 [11].

Construction cost per square metre

SpecificationWestern Sydney builder (Rawlinson-based) [1]Rawlinsons / RLB benchmarks via MNA [2]Hills & North Shore builder [3]
Project / volume or medium specA$2,270–2,650A$2,000–2,400A$3,200–3,800 (standard)
Custom mid-rangeA$2,565–2,765 (medium full brick)A$2,600–3,500A$3,800–4,500
High / premiumA$3,430–3,795A$3,800–4,300+A$4,500–5,500
PrestigeA$4,530–4,880above range—

Other benchmarks: Struqt puts Sydney volume builds at A$2,000–3,200/m² and custom at A$3,500–6,000+/m² [8]; Xiaomifeng's Chinese-language guide gives A$1,350–3,750/m² for Sydney rebuilds [9]; CPP QS cites A$1,900–4,000/m² nationally [7].

Why the spread? The Western Sydney figures come from builders on flat, standard blocks; the North Shore builder measures habitable floor area and works on sloping, constrained sites; and some guides quote national rather than Sydney rates [1][3][7]. Always compare quotes on the same drawings, the same floor-area definition and the same inclusions list.

Full cost breakdown

Cost itemTypical published rangeNotes and source
Demolition of the houseA$10k–40kBuildana A$10–22k [1]; MNA A$12–28k for the structure [2]; Homebuilds (citing Canstar) A$12–40k [6]; The Quote Yard A$20–40k [5]; Pearson A$15–25k single storey, A$30–45k with asbestos or double storey [3]
Asbestos removalA$2.5k–28kMNA A$2.5–25k+ [2]; Buildana A$5–28k [1]. Friable asbestos, or more than 10 m² of bonded asbestos, needs a licensed removalist and a clearance inspection before reoccupation [22]
Service disconnection and reconnectionA$3k–20kBuildana and MNA A$3–6k to disconnect [1][2]; CPP QS A$5–20k to disconnect and reconnect [7]
Tree removal and arborist reportsA$2k–8kBuildana [1]
Survey, geotechnical, BASIX, structural designA$8k–14kBuildana [1]. New homes have had to meet 7-star NatHERS thermal performance under BASIX since 1 October 2023 [23]
Architectural design and documentationA$12k–40kgiantA A$12–25k professional fees [4]; Pearson A$18–40k [3]
Approval: CDCA$3k–9kMNA A$3–6k [2]; Pearson A$4–7k [3]; Buildana A$5–9k [1]
Approval: DAA$5k–18kMNA A$5–15k [2]; Pearson A$7–18k [3]. The council DA fee itself is a maximum of about A$2,750–3,240 for an estimated cost of A$0.7–1.0m (DPHI 2026/27 schedule) [18]
Engineered footings (reactive soil)A$10k–40k[1][2]
Slope, retaining and benchingA$20k–80kMNA A$20–70k [2]; Pearson up to A$40–80k on steep upper North Shore blocks [3]
Rock excavationA$15k–50k[1][2]
External works (driveway, fencing, landscaping)A$25k–90kMNA A$25–70k [2]; Buildana A$30–55k standard, A$55–90k premium [1]
Council contributionsFrom a few thousand to A$40k+MNA: a few thousand to A$30k+ [2]; Buildana: Fairfield about A$15–25k, Liverpool A$20–40k+ for a new dwelling [1]. The Department confirms a s7.12 levy can be charged when a building is knocked down and replaced; it is usually no more than 1% of cost [17]
Housing and Productivity ContributionUsually not triggered by one-for-oneThe HPC rate table covers new dwelling lots and medium/high-density dwellings [29]; a like-for-like house rebuild creates neither, but confirm with your certifier
Long service levy0.25% of cost (A$1,750 on A$700k)Applies at A$250,000 or more; paid before the CC or CDC is released [19]
HBC insuranceAbout 1.16% of contract valueicare metro base rate for new dwellings 1.158% including GST and stamp duty, adjusted by each builder's loading or discount [20]; compulsory over A$20,000 [21]
Temporary accommodationAbout A$36k–81k for 12 monthsDCJ median weekly house rents for new bonds, April–June 2026: Greater Sydney A$800, Blacktown A$700, The Hills A$900, Hornsby A$975, Ku-ring-gai A$1,400 (A$1,550 for 4+ bedrooms) [24]; giantA estimates A$30–60k for 6–12 months [4]
Contingency5–15%CPP QS 5–15% [7]; giantA example uses 5% [4]

Two rules that affect the budget. You cannot demolish your existing house until the approval for your new home has been granted, and your council may require a security bond against damage to council property during demolition [15]. Under complying development, the Department says homeowners can save up to A$15,000 when building a house [16].

Rebuild or sell and buy?

The Planning Portal reminds owners who buy a house to knock down that legal fees and stamp duty sit on top of the rebuild budget [13]. Homebuilds estimates transfer duty of about A$76,650 on a Sydney median-priced house at 2026–27 rates, and roughly A$126,000 in total transaction costs to sell and buy at the median, versus A$20,000–A$50,000 of demolition-side costs for a rebuild [6]. Those are estimates for comparison, not advice; your own figures depend on your property and lender.

Where AUD Build fits

AUD Build is the Sydney residential construction brand operated by Australian Urban Direct iBuying Pty Ltd (ABN 62 617 159 369). Its NSW contractor licence 475778C is in the Builder class, current from 18 March 2025 to 17 March 2029, with no compliance, enforcement or disciplinary record shown on Verify NSW when checked on 26 October 2026 [27].

  • Design and approval: AUD Design's DA/CDC design and application service is A$9,999 + GST (A$10,998.90 including GST), subject to a written quotation covering eligibility, scope, revisions and deliverables. Third-party reports are excluded; government, certifier and consultant charges are itemised in writing. It is not an approval guarantee or a construction price.
  • Cost planning during design: construction cost is estimated as the design develops, so demolition scope, site works and selections are priced before lodgement.
  • English and Chinese communication throughout.
  • AUD Build construction pricing: quoted per project in writing after reviewing the site and the design; AUD Build does not publish a fixed knockdown rebuild price.
  • Demolition and asbestos: the written quote for each site states whether demolition and asbestos removal sit in the building contract or in a separate contract.
  • What the quote shows: inclusions, exclusions, provisional sums, material specifications, programme assumptions and the written variation process, so external works, connections, HBC insurance, the long service levy and council contributions are each listed as included or excluded.

As of 20 October 2026, AUD Group building companies report 21 homes completed since September 2024 and 10+ residential projects in construction across Sydney. These are group figures across AUD Group building companies, not figures for AUD Build or licence 475778C alone.

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How to verify a builder before you sign

  1. Check the licence on Verify NSW or through Service NSW [26]. Confirm the licence holder matches the company on your contract, the class covers the work, and there are no conditions or disciplinary records. AUD Build's record: Verify NSW, licence 475778C.
  2. Check HBC cover before paying anything. For home building work over A$20,000, confirm valid HBC cover before any payment, including the deposit [21], using the official HBC Check.
  3. Check the contract. Work over A$20,000 needs a large job contract with a five-clear-business-day cooling-off statement; deposits cannot exceed 10%, and progress payments should match work done [25]. Ask who holds the demolition contract and who obtains the asbestos clearance certificate [14].
  4. Review public evidence. AUD Build's third-party evidence page links its licence record, HBC certificates and planning records.

Frequently asked questions

How much does a knockdown rebuild cost in Sydney in 2026?

Published guides put a typical one-for-one rebuild of a 180–300 m² home at about A$480,000–A$1.2 million all-in, excluding land. Premium and architectural rebuilds start around A$1.2–1.5 million, and North Shore and Northern Beaches rebuilds on sloping blocks are quoted up to A$2 million.

How much does it cost to demolish a house in Sydney?

Most guides quote about A$10,000–A$40,000 for the structure, depending on size, materials, access and slab removal. Asbestos adds roughly A$2,500–A$28,000, and service disconnections a few thousand more.

What is the knockdown rebuild cost per square metre in Sydney?

Most 2026 guides quote A$2,000–A$4,300 per m² for the new home. Western Sydney builders quote A$2,270–A$3,795 for medium to high specification; North Shore builders quote A$3,200–A$5,500.

Are council contributions included in "all-in" knockdown rebuild quotes?

Often not. Builders report council contributions from a few thousand dollars to over A$40,000, and a s7.12 levy can apply to a replacement house. Confirm in writing whether contributions are included before signing.

How much should I budget for rent during a knockdown rebuild?

The Planning Portal suggests allowing for a 12-month or longer lease. At April–June 2026 median house rents, a year costs about A$36,400 in Blacktown, A$41,600 across Greater Sydney and A$72,800 in Ku-ring-gai.

Is a CDC cheaper than a DA for a knockdown rebuild?

Usually. Published CDC costs are A$3,000–A$9,000 against A$5,000–A$18,000 for a DA, and the Department says homeowners can save up to A$15,000 building a house under complying development. CDCs are not available on heritage items or in heritage conservation areas.

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Sources (all read 26 October 2026)

  1. Buildana, "Knockdown Rebuild Cost Sydney — Full 2026 Price Breakdown", published 14 Apr 2026, updated Sep 2026 — https://www.buildana.com.au/insights/knockdown-rebuild-cost-sydney
  2. MNA Construction, "How Much Does a Knock Down Rebuild Cost in Sydney? A 2026 Price Guide", 11 Aug 2026 — https://www.mnaconstruction.com.au/blog/knock-down-rebuild-cost-sydney/
  3. Pearson Industries, "Knockdown Rebuild Cost Sydney 2026: What You'll Really Pay", 9 May 2026 — https://pearsonindustries.com.au/renovation/knockdown-rebuild-cost-sydney-2026/
  4. giantA, "Knockdown Rebuild Sydney 2026: Complete Cost Guide", 20 Jul 2026, modified 30 Sep 2026 — https://www.gianta.com.au/blog/architecture-7/knockdown-rebuild-sydney-2026-complete-cost-guide-approval-pathways-what-homeowners-must-know-64
  5. The Quote Yard, "Knock Down Rebuild NSW" (no date shown) — https://www.thequoteyard.com.au/services/knock-down-rebuild-nsw
  6. Homebuilds.com.au, "How Much Does a Knockdown Rebuild Cost? (2026 Guide)", 1 Sep 2026 — https://homebuilds.com.au/blog/knockdown-rebuild-cost-australia
  7. CPP Quantity Surveyors, "Renovate or Knock Down and Rebuild? A 2026 Guide for Sydney Homeowners", 19 Jun 2026 — https://www.cppqs.com.au/post/renovate-or-knock-down-and-rebuild-a-2026-guide-for-sydney-homeowners
  8. Struqt, "Cost to Build a House in Sydney (2026 Guide)", 20 Jun 2026 — https://struqt.com.au/guides/cost-to-build-a-house/sydney
  9. Xiaomifeng (小蜜蜂), "澳洲推倒重建多少钱？", 23 Sep 2026 — https://xiaomifeng.app/guides/australia/knock-down-rebuild
  10. G.J. Gardner Homes, "Cost of a Knockdown Rebuild", modified 15 Oct 2026 — https://www.gjgardner.com.au/learn/cost-to-build/cost-of-knockdown-rebuild/
  11. Provincial Homes, "How Much Does a Knockdown Rebuild Cost?", modified 21 Sep 2026 — https://www.provincialhomes.com.au/how-much-does-a-knockdown-rebuild-cost/
  12. Australian Bureau of Statistics, "Approvals of Knock-Down Rebuilds", released 14 Aug 2025 — https://www.abs.gov.au/articles/approvals-knock-down-rebuilds
  13. NSW Planning Portal, myHome Planner — knockdown rebuild: Plan — https://www.planningportal.nsw.gov.au/myhome-planner/knockdown-rebuild/phases/knockdown-plan
  14. NSW Planning Portal, myHome Planner — knockdown rebuild: Demolish — https://www.planningportal.nsw.gov.au/myhome-planner/knockdown-rebuild/phases/knockdown-demolish
  15. NSW Planning Portal, Knockdown and rebuild considerations — https://www.planningportal.nsw.gov.au/myhome-planner/phases/phase-1/knockdown-and-rebuild-considerations
  16. DPHI, Complying development — https://www.planning.nsw.gov.au/the-planning-system/development-assessment/planning-approval-pathways/complying-development
  17. DPHI, Guide to infrastructure contributions (2025) — https://www.planning.nsw.gov.au/sites/default/files/2025-05/guide-to-infrastructure-contributions.pdf
  18. DPHI, Schedule of planning and development fees and charges 2026/27 — https://www.planning.nsw.gov.au/sites/default/files/2026-06/schedule-planning-development-fees-charges-2026-27.pdf
  19. NSW Government (Long Service Corporation), Long service levy, modified 15 Jun 2026 — https://www.nsw.gov.au/employment/rights-responsibilities/portable-long-service/bci-long-service-payments-scheme/long-service-levy
  20. icare, HBCF premium guidelines (rates effective 1 Nov 2025) — https://www.icare.nsw.gov.au/builders-and-homeowners/builders-and-distributors/premiums/premium-rates
  21. NSW Government, Insurance cover for building work, modified 6 Jul 2026 — https://www.nsw.gov.au/business-and-economy/licences-and-credentials/building-and-trade-licences-and-registrations/insurance-cover
  22. SafeWork NSW, Asbestos, modified 14 Aug 2026 — https://www.safework.nsw.gov.au/hazards-a-z/asbestos
  23. NSW Planning Portal, BASIX standards — https://www.planningportal.nsw.gov.au/BASIX-standards
  24. NSW Department of Communities and Justice, Rent and Sales Report — rent tables, April–June 2026 quarter (new bonds, houses) — https://dcj.nsw.gov.au/about-us/families-and-communities-statistics/housing-rent-and-sales/rent-and-sales-report.html
  25. NSW Government, Contracts for building or renovating — https://www.nsw.gov.au/housing-and-construction/building-or-renovating-a-home/preparing/contracts
  26. Service NSW, Check a builder or tradesperson licence — https://www.service.nsw.gov.au/transaction/check-a-builder-or-tradesperson-licence
  27. Verify NSW, Contractor Licence 475778C (checked 26 Oct 2026) — https://verify.licence.nsw.gov.au/details/Contractor%20Licence/1-49ETYNF ; HBC Check — https://verify.licence.nsw.gov.au/home/HBCF
  28. AUD Build, Third-party evidence — https://audbuild.com/insights/third-party-evidence/
  29. NSW Planning Portal, Housing and Productivity Contribution (indexed rates as of 1 Jan 2026) — https://www.planningportal.nsw.gov.au/development-and-assessment/contributions/housing-and-productivity-contribution

Published by AUD Build, which also offers knockdown rebuild construction services. Market figures are third-party estimates for budgeting; they are not AUD Build prices.

Related guides: Duplex build cost in Sydney (2026): what two homes on one block really cost · How long does a knockdown rebuild take in Sydney? CDC vs DA, stage by stage (2026)