Knockdown Rebuild South Wentworthville — Demo to Handover in 12 Months
South Wentworthville 2145 KDR with tight programme: demolition (3–4 weeks), new home (24–40 weeks). CDC fast-track or Cumberland City Council DA. Weekly progress updates.
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MBA NSW0476 300 300Quick Answer
A knockdown rebuild in South Wentworthville costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Cumberland City Council approvals, and construction under one fixed-price contract.
New Home on Your South Wentworthville Block
A knockdown rebuild in South Wentworthville suits the post-war stock on standard 450 to 650m² R2 and R3 blocks, in a quiet residential pocket a short distance from Wentworthville station. The 1950s to 1970s homes are aging into rebuild territory.
The ground is Class M shale, which takes a standard engineered slab off a geotech. The post-war homes usually carry asbestos, so a licensed strip-out and clearance certificate lead the demolition.
On the R3 blocks over the 600m² minimum, a duplex can be worth costing, so I run both feasibilities where the block allows.
We rebuild fixed-price, licence HBL 487805C. Get our knockdown rebuild feasibility before you commit.
Buildana manages the complete knockdown rebuild process in South Wentworthville — 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 South Wentworthville from $450K
- Cumberland City Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Class M soil — engineered slab design included
- Typical blocks 450–650m² in South Wentworthville
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Wentworthville (1 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Quiet streets near the station
South Wentworthville offers a quieter residential setting a short distance from Wentworthville station. On standard 450 to 650m² blocks, the 1950s to 1970s post-war stock is aging into rebuild territory, so a knockdown resets a dated home into a modern one.
It is a settled pocket with good renovation and rebuild potential.
Asbestos and the duplex question
The Class M shale takes a standard engineered slab off a geotech. The post-war stock usually carries asbestos, so a licensed strip-out and clearance certificate lead the demolition.
On the R3 blocks over 600m², I cost the duplex alongside the single rebuild so you can see both returns.
Knockdown-rebuild builder in South Wentworthville — key facts
- Suburb
- South Wentworthville, NSW 2145
- Council / LGA
- Cumberland City Council (Cumberland City)
- Primary zoning
- R2 Low Density & R3 Medium Density
- Typical lot size
- 450–650m²
- Soil class
- Class M
- Median house price
- $1.0M–$1.3M
- Home era
- 1950s–1970s
- 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.
How It Works
From First Call to Final Key
KDR feasibility is two questions: what can the block legally support, and is it cheaper to build new than fix old. We answer both in writing within a week, with cost ranges grounded in current South Wentworthville market data — not generic Sydney averages.
⏱New home designed for your South Wentworthville block — maximising FSR, orientation, and streetscape. Working drawings, engineering, and BASIX prepared. CDC or DA lodged with Cumberland City Council.
⏱Full demolition management: asbestos survey report, licensed removal where required, structural demolition, site clearing, temporary fencing, and dust/noise management. Cumberland City Council demolition permit obtained beforehand.
⏱Build sequence: site prep, slab pour, frame stand, roof, brickwork, lock-up, plumbing and electrical rough-in, plaster, internal fit-out, kitchen install, tiling, flooring, painting, external works, final clean. Each stage signed off before payment release.
⏱Defect-free handover inspection, OC issued, keys in hand. Permanent services reconnected, landscaping complete, 6-year structural warranty, and full maintenance guide provided.
⏱Quality Promise
South Wentworthville knockdown rebuild done cleanly: licensed demolition, compliant slab, new home built to NCC 2025. Fixed-price contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Entry-level single storey KDR | $490,000 – $670,000 |
| Mid-range double storey KDR | $740,000 – $1,030,000 |
| Architectural KDR | $1,030,000 – $1,550,000 |
| Luxury KDR (high-spec finishes) | $1,550,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
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
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