Knockdown Rebuild Bonnyrigg — From $450K All-In
Fixed-price knockdown rebuild in Bonnyrigg 2177. Demolition, new home, all Fairfield City Council approvals under one contract. No surprises, no variation trail.
HIA Member
MBA NSW0476 300 300Knockdown Rebuild Builder in Bonnyrigg
A knockdown rebuild in Bonnyrigg suits the 1960s to 1980s fibro stock on the suburb's wide streets and generous 450 to 700m² blocks. It is a settled family suburb with established parks, steadily renewing as older homes reach the end of their run, so a rebuild fits the direction of the area.
The ground is Class H reactive clay, which needs a properly engineered slab. The new home sits on a stiffened raft designed off a real geotech, because reactive clay will crack a home built on an under-designed footing.
The fibro-era 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 the stronger play, 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 Bonnyrigg — 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 Bonnyrigg from $450K
- Fairfield City Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Class H soil — engineered slab design included
- Typical blocks 450–700m² in Bonnyrigg
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Cabramatta (3 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Settled family suburb, renewing
Bonnyrigg's wide streets, established parks and generous 450 to 700m² blocks make it a comfortable family suburb, and the older fibro stock is steadily giving way to renewal. A knockdown rebuild resets a dated home into a modern build that suits where the suburb is heading.
On the more generous blocks there is genuine room for a substantial single home or, on the R3 lots, a duplex.
Reactive clay and asbestos
The Class H reactive clay under Bonnyrigg means the new home needs a stiffened raft engineered off a real geotech. It is the detail that matters most, because reactive clay finds any weakness in an under-built slab.
The fibro-era homes usually carry asbestos, so a licensed strip-out and clearance certificate lead the demolition. On R3 blocks over 600m², I cost the duplex alongside the single rebuild.
Knockdown-rebuild builder in Bonnyrigg — key facts
- Suburb
- Bonnyrigg, NSW 2177
- Council / LGA
- Fairfield City Council (Fairfield City)
- Primary zoning
- R2 Low Density & R3 Medium Density
- Typical lot size
- 450–700m²
- Soil class
- Class H
- Median house price
- $950K–$1.2M
- Home era
- 1960s–1980s
- 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
Real Project
Knockdown Rebuild — Bonnyrigg
1970s fibro cottage on a 615sqm lot replaced with 260sqm two-storey 4-bed. Bonnyrigg's typical old stock is ready for this kind of renewal — soil came back Class M, no contamination, no surprises. Fairfield Council CDC — 12 days.
Completed in 27 weeks. Fixed-price $745,000. Family stayed in a rental for 5 months of construction.
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.
Quality Promise
Every Buildana knockdown rebuild in Bonnyrigg is delivered under a fixed-price contract — site assessment through to defect-free handover.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. Free site inspection of your Bonnyrigg property. We check lot dimensions, Fairfield City Council's planning controls, existing home condition, and potential asbestos. Written assessment with budget estimate within 5 business days. KDR is the chance to get the design right — the new build doesn't have to mimic the original layout. We start from your block's strengths (orientation, slope, views) and your family's brief, then design the home the original lot always deserved.
⏱The Bonnyrigg construction phase. Fixed price, programmed, supervised. Licensed demolition of existing 1960s–1980s-era dwelling. Asbestos removal by certified contractors (if present). Site cleared, levelled, and ready for new slab. Typically 1–2 weeks. Your new home goes up on the cleared site. Engineered slab sized for Class H soil, frame, roof, fit-out, kitchen, bathrooms, flooring, painting, driveway, and landscaping. Quality inspections at every stage.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Handover pack: OC, structural certificates, BASIX, appliance manuals and warranties, paint colour schedule, maintenance plan, and the keys. Six-year structural warranty kicks in from OC date — keep the documentation safe for any future sale.
⏱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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Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 1 April 2026
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Knockdown Rebuild in Bonnyrigg
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Other Buildana services in Bonnyrigg
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Bonnyrigg 2177. Fairfield City Council regulations and local controls are covered on each page.