Knockdown Rebuild Sydney — Same Street, Brand New Home
Love the location, outgrown the house. No stamp duty on a new purchase. No moving suburb. Same community. Buildana manages demolition through to handover under one fixed-price contract.
HIA Member
MBA NSW0476 300 300Quick Answer
A knockdown rebuild in Sydney costs $500,000–$1,100,000+ including demolition and new construction. Entry single-storey from $500K, mid double-storey from $750K. Buildana manages demolition, asbestos, approvals and construction under one fixed-price contract across Sydney.
Keep Your Street. Rebuild Your Home.
A knockdown rebuild makes sense when you love where you live but the house has reached the end of its useful life. No stamp duty on a new property purchase. No agent commission. No moving your kids out of their school. Same street, same neighbours, brand new home built to current standards with a 6-year structural warranty.
Buildana manages the entire knock down rebuild process across Sydney — including Fairfield, Liverpool, Cumberland, Canterbury-Bankstown and Blacktown — from asbestos assessment and licensed demolition through to custom home design, CDC fast-track approvals (10–15 business days for eligible builds) or DA management, and fixed-price construction from slab to keys.
Many older Sydney homes were built well under their block's maximum development potential. A knockdown rebuild lets you build bigger, smarter, and to current NCC 2022 standards — often with a significantly larger floor area than the original house. And with the July 2024 Low and Mid Rise Housing Policy reform, your KDR could become a duplex on eligible R2 blocks.
- All-in KDR from $500K (demolition + new build)
- Fixed-price contract — demolition through to handover
- Asbestos assessment and licensed removal managed
- CDC fast-track or DA managed across Sydney
- KDR into a duplex available on eligible R2 blocks
- Service disconnection and reconnection coordinated
- 6-year structural warranty (Home Building Act 1989)
- Free site assessment — honest advice on KDR vs renovation
Knockdown Rebuild Gallery
From demolition to brand new home — same street, completely transformed.
Is a Knockdown Rebuild Right for You?
Your home was built before 1990 and needs major structural work
Renovation costs exceed 50–60% of a new build cost
The floor plan doesn't work and can't be fixed by extension alone
You want a modern, energy-efficient home on your existing block
You love your street, school catchment, and neighbours
Your block has untapped development potential (bigger home or duplex)
Knockdown Rebuild vs Renovation
| Factor | KDR | Renovation |
|---|---|---|
| Structural integrity | Brand new — full warranty | Depends on existing condition |
| NatHERS energy rating | 7-star minimum (NCC 2022) | Limited by existing structure |
| Layout flexibility | Maximum — start from scratch | Constrained by existing walls |
| Cost certainty | Fixed price, fully itemised | Variations common mid-build |
| Timeline | 12–18 months total | 6–12 months (depending on scope) |
| Resale value impact | Significant uplift | Moderate uplift |
| Best when | Structure beyond economical repair | Good structure, cosmetic or partial upgrade |
Asbestos in Older Homes — What You Need to Know
Pre-1985 homes are common across Sydney — particularly in Western Sydney suburbs of Fairfield, Liverpool, Cumberland, Canterbury-Bankstown and Blacktown. Asbestos-containing materials (ACMs) are found in fibro sheeting, vinyl floor tiles, roof cladding, eaves linings, and pipe lagging. When these homes are demolished for a knockdown rebuild, asbestos management is mandatory under NSW WHS Regulation 2017.
Buildana's asbestos management process — all included in the fixed-price KDR quote:
Licensed Assessment
Licensed asbestos assessor inspects and quantifies all ACMs before any demolition work begins.
Licensed Removal
Licensed removal contractor strips all ACMs under controlled conditions with air monitoring throughout.
Clearance Certificate
Independent air monitoring confirms safe levels. Clearance certificate issued before general demolition continues.
Licensed Disposal
All asbestos waste transported to a licensed waste facility with full chain-of-custody documentation.
Asbestos removal typically adds $5,000–$35,000 to the demolition cost depending on quantity and type. All costs are confirmed before contract signing.
KDR into a Duplex — Maximise Your Block
The July 2024 Low and Mid Rise Housing Policy reform has made dual occupancy permissible in most R2 Low Density zones across NSW. This opens up thousands of blocks across Sydney that were previously limited to a single dwelling. If your block qualifies, a knock down rebuild dual occupancy delivers two dwellings on the land you already own — each independently titled under Torrens title.
$880–$1,040/wk
Combined rental income
Two 3-bed dwellings rented in Western Sydney
Significant
Capital uplift
Two Torrens title properties vs one single home
$0
No stamp duty
You already own the land — no purchase tax
Buildana assesses your block's duplex eligibility during the free site assessment. Read more about duplex developments and development feasibility.
Knockdown Rebuilds Across Western Sydney
Fairfield LGA
Fairfield LEP 2013High concentration of 1960s–80s fibro and brick veneer homes. Many blocks are 550–800m² with significant untapped FSR. Asbestos is common in pre-1985 fibro homes — Buildana manages all removal.
Suburbs: Cabramatta, Bonnyrigg, Smithfield, Canley Heights, Wetherill Park, Bossley Park, Edensor Park, Prairiewood
Liverpool LGA
Liverpool LEP 2008Established suburbs like Moorebank, Casula and Green Valley have aging housing stock ideal for KDR. Rising land values in the airport growth corridor make rebuilding more financially attractive than renovating.
Suburbs: Liverpool, Casula, Prestons, Moorebank, Hinchinbrook, Cecil Hills, Green Valley, Lurnea, Miller
Cumberland LGA
Cumberland LEP 2021Older large lots in Greystanes, Pemulwuy and Wentworthville suit KDR. Former industrial areas in Auburn and Granville may need contamination assessment. Buildana has extensive CDC and DA experience with Cumberland Council.
Suburbs: Merrylands, Guildford, Auburn, Granville, Wentworthville, Greystanes, Pemulwuy, Girraween
Canterbury-Bankstown LGA
Canterbury-Bankstown LEP 2023Established suburbs with single-storey homes on large blocks. TOD precincts near Bankstown Metro and Campsie are increasing land value — making KDR into quality homes or duplexes a strong investment.
Suburbs: Bankstown, Padstow, Revesby, Punchbowl, Yagoona, Chester Hill, Condell Park, Panania
Blacktown LGA
Blacktown LEP 2015Western suburbs (Seven Hills, Doonside, Rooty Hill) have 1970s–80s housing stock suited to KDR. Growth areas (Marsden Park, Schofields) are predominantly new builds, not KDR.
Suburbs: Blacktown, Seven Hills, Quakers Hill, Doonside, Rooty Hill, Kings Langley, Marayong
Knockdown Rebuild by Suburb
Suburb-specific KDR guides — local zoning, typical costs, soil conditions, and recent project examples.
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
How It Works
From First Call to Final Key
We inspect your existing home and block. Asbestos check, soil classification, service locations, zoning review, setback analysis under your council's LEP and DCP. Honest advice on KDR vs renovation.
⏱Custom floor plan designed for your existing block — orientation, setbacks, neighbours, slope and council requirements all factored in. Multiple floor plan options, 3D renders and elevations.
⏱Working drawings, BASIX certificate, structural engineering, soil report coordination, stormwater plan and all certifier/council documentation prepared.
⏱CDC (10–15 business days) or DA (40–90 days) lodged and managed. Construction Certificate obtained before works commence.
⏱Licensed demolition including asbestos removal (if required), service disconnection, site clearance and preparation for new construction. Air monitoring and clearance certificate included.
⏱New home built from slab to lock-up to finishing. Milestone updates from your project manager. Quality inspections at every stage.
⏱Final inspection, Occupation Certificate, 6-year structural warranty, keys, maintenance guide. New services connected and metered.
⏱Quality Promise
Every Buildana knockdown rebuild is managed under one fixed-price contract — demolition, approvals, construction and handover. No split contracts, no surprises.
Our Team
Oliver Alameri
Founder / Director / Builder
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
Cost Guide
| Item | Estimated Range |
|---|---|
| Demolition (standard home) | $18,000 – $40,000 |
| Asbestos removal (if required) | $5,000 – $35,000 |
| Entry KDR (single storey standard) | $500,000 – $700,000 |
| Mid KDR (double storey quality) | $750,000 – $1,100,000 |
| Premium KDR | $1,100,000+ |
| Hydraulic/stormwater | $5,000 – $15,000 |
| Council contributions (DA only) | $5,000 – $50,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
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Frequently Asked Questions
“Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.”
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.
Last updated: 1 July 2025
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Free site assessment. We'll assess your block, advise on KDR vs renovation, and give you a realistic budget — all within 48 hours.
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