Knockdown Rebuild Lewisham — One Contract, Demo to Keys
Everything under one agreement in Lewisham 2049: demolition, asbestos removal, site prep, design, approvals, engineering, new home construction, landscaping and Occupation Certificate.
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A knockdown rebuild in Lewisham costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Inner West Council approvals, and construction under one fixed-price contract.
Demolish and Rebuild in Lewisham
Knockdown rebuild in Lewisham is heavily constrained, and I will give you the honest read. This small rail-line suburb is Federation cottages, Victorian terraces and inter-war heritage on 150 to 400m² blocks, with Heritage Conservation Areas covering much of the suburb and R4 around the station precinct.
On the heritage streets, a sympathetic restoration with a rear extension is usually the right move. Near the station, R4 redevelopment value can dominate. And on the few detached blocks outside both, a compact rebuild can work — the survey and heritage mapping decide it.
The ground is Wianamatta Shale, so the slab is designed off a real geotech. The pre-war stock almost always carries asbestos and lead paint, so a licensed strip-out leads any demolition.
We build fixed-price, licence HBL 487805C. Get our honest feasibility before you commit.
Buildana manages the complete knockdown rebuild process in Lewisham — from site assessment and architectural design through to DA or CDC approval, demolition management, and fixed-price construction to handover. One builder, one contract, one new home.
Read our KDR Cost Guide 2026 or use the Renovation vs KDR Calculator to compare options.
- New home in Lewisham from $450K
- Inner West Council DA and CDC approvals managed
- Demolition and asbestos removal included
- M — engineered slab design included
- Typical blocks 150–400m² in Lewisham
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Lewisham (T2, in suburb) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Constrained, but not uniform
Lewisham's Heritage Conservation Areas cover much of the suburb, so on the heritage streets a sympathetic restoration with a rear extension is usually the right move. Near the station, R4 redevelopment value can dominate.
On the few detached blocks outside both, a compact rebuild can work. I check the survey and the heritage mapping first, because they decide it.
Shale and old stock
The Wianamatta Shale takes a slab designed off a real geotech, planned carefully on the tight blocks.
The pre-war stock almost always carries asbestos and lead paint, so a licensed strip-out leads any demolition.
Knockdown-rebuild builder in Lewisham — key facts
- Suburb
- Lewisham, NSW 2049
- Council / LGA
- Inner West Council (Inner West)
- Primary zoning
- R1/R2 General/Low
- Typical lot size
- 150–400m²
- Soil class
- M
- Median house price
- $1.7M–$2.7M
- Home era
- 1880s–1920s + apartments
- Typical price range
- $450,000 – $1,200,000+
- Typical timeline
- 14–22 months including demolition
- Approval pathway
- CDC where eligible or DA for complex sites
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
Cost Guide
| Item | Estimated Range |
|---|---|
| Entry-level single storey KDR | $480,000 – $650,000 |
| Mid-range double storey KDR | $720,000 – $1,000,000 |
| Architectural KDR | $1,000,000 – $1,500,000 |
| Luxury KDR (high-spec finishes) | $1,500,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Site visit covers everything that affects the build cost: vehicle access for trucks and crane, services (sewer depth, water connection, electrical service rating), soil exposure for borehole, neighbouring construction, and any obvious heritage or tree constraints. Real numbers, not estimates.
⏱Architectural design for your replacement home, structural engineering for Class M soil, BASIX certification, and all approval documentation. Lodged as CDC (10–15 days) or DA (40–90 days) depending on design.
⏱Demolition runs 5–10 working days for a standard Lewisham cottage — longer if asbestos volume is significant or the structure includes a brick chimney or solid-block walls. Asbestos work happens first under a controlled removal program before mechanical demo starts.
⏱New home built from engineered slab (Class M soil) to keys — fixed-price, milestone-based progress payments. Your project manager provides weekly updates.
⏱Walk through your finished home on your original Lewisham block. OC issued, all services live, 6-year structural warranty, appliance manuals, and maintenance schedule. Move in.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
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
Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
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
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Last updated: 1 April 2026
Lewisham KDR — Start Here
Free KDR site assessment for Lewisham 2049. We'll assess your block, estimate cost, and provide a fixed-price budget.
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Other Buildana services in Lewisham
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Lewisham 2049. Inner West Council regulations and local controls are covered on each page.