Knockdown Rebuild Box Hill — One Contract, Demo to Keys
Everything under one agreement in Box Hill 2765: demolition, asbestos removal, site prep, design, approvals, engineering, new home construction, landscaping and Occupation Certificate.
HIA Member
MBA NSW0476 300 300Quick Answer
A knockdown rebuild in Box Hill costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, The Hills Shire Council approvals, and construction under one fixed-price contract.
Knockdown Rebuild Builder in Box Hill
Knockdown rebuild in Box Hill is almost always the wrong product, and I will be straight about it. This is a North-West Growth Centre new-release suburb built from 2015 onwards, with ongoing land releases — you do not knock down a home that is only a few years old.
What Box Hill is actually about is custom home builds on registered lots. If you hold a block here, the product is a new home designed to the estate requirements. The exception is a legacy rural holding predating the release, where a rebuild or subdivision-and-build can make sense.
The blocks run 300 to 600m², and the ground is Wianamatta Shale, so any build needs a slab designed off a real geotech. The rural fringe carries bushfire adjacency worth checking.
We build fixed-price, licence HBL 487805C. Tell me what you own and I will point you at the right product.
Buildana manages the complete knockdown rebuild process in Box Hill — 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 Box Hill from $450K
- The Hills Shire Council DA and CDC approvals managed
- Demolition and asbestos removal included
- M — engineered slab design included
- Typical blocks 300–600m² (new release) in Box Hill
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Bus to Rouse Hill Metro (5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A new-release suburb, not a teardown one
Box Hill is a North-West Growth Centre master-planned suburb built from 2015 onwards with ongoing releases. The housing is only a few years old, so a knockdown rebuild is the wrong product for almost the entire suburb.
The exception is a legacy rural holding predating the release, where a rebuild or subdivision-and-build can genuinely stack up.
What you probably actually need
If you hold a registered lot, the product is a custom home build designed to the estate requirements, on the 300 to 600m² lots. The Wianamatta Shale takes a slab designed off a real geotech.
On the rural fringe, bushfire adjacency is worth checking, which I do as part of the feasibility.
Knockdown-rebuild builder in Box Hill — key facts
- Suburb
- Box Hill, NSW 2765
- Council / LGA
- The Hills Shire Council (The Hills)
- Primary zoning
- R2 Low
- Typical lot size
- 300–600m² (new release)
- Soil class
- M
- Median house price
- $1.1M–$1.6M (new release)
- Home era
- 2015+ contemporary
- 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
Everything that has to be right before we touch the ground. Free site inspection of your Box Hill property. We check lot dimensions, The Hills Shire 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 Box Hill construction phase. Fixed price, programmed, supervised. Licensed demolition of existing 2015+ contemporary-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 M 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.
⏱Quality Promise
Buildana handles Box Hill KDR end-to-end — old house out, new house in, one contract, one contractor, one defined timeline.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single storey rebuild (150–200m²) | $460,000 – $650,000 |
| Double storey rebuild (200–300m²) | $650,000 – $1,000,000 |
| Premium rebuild (300m²+) | $1,000,000+ |
| Demolition (2015+ contemporary Box Hill home) | $17,000 – $38,000 |
| Asbestos removal (if present) | $8,000 – $24,000 |
| Service disconnections & reinstatement | $3,000 – $8,000 |
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
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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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