BOURNE GROUP
AUSTRALIA
Knockdown Rebuild
Sydney
Builders Lic 313109C
Build New on the Block You Love
Your suburb is perfect. Your street is home. But your house? It's time for a fresh start. A knockdown rebuild lets you demolish an ageing home and replace it with a stunning, modern, energy-efficient custom home — on the land you already own, in the location you already love. No compromise on suburb. No settling for someone else's floor plan. Just a brand new luxury home, built exactly the way you want to live. Bourne Group specialises in knockdown rebuild projects across Sydney's Northern Beaches, North Shore, Castle Cove, Chatswood, Dee Why, Manly and Hills District . We handle everything from demolition coordination to design, approvals, construction and handover — one builder, one relationship, zero headaches.
Is a Knockdown Rebuild Right for You?
A knockdown rebuild could be the smartest decision you make if:
- Your home is more than 30 years old and maintenance costs are escalating
- You love your location but your home no longer suits your family or lifestyle
- Renovation costs would exceed the value gained from improving the existing structure
- You want a fully custom home designed from scratch around how you actually live
- Your block has more potential than your current home is delivering
If any of these sound familiar, a knockdown rebuild with Bourne Group is worth a conversation.
Why Choose Bourne Group
Step 1 — Free Site Consultation
We visit your property, assess its potential and give you an honest appraisal of what's achievable on your block. We look at slope, orientation, council setbacks, heritage overlays and design opportunities.
Step 2 — Custom Design by Elle
Our co-founder Elle leads all architectural design. Your new home is designed from scratch around your block, your lifestyle and your vision — not adapted from a standard template.
Step 3 — Demolition Coordination
We coordinate the entire demolition process with our trusted, licensed demolition contractors. We advise on timing, disconnection of services and council notification requirements.
Step 4 — DA or CDC Approval
We manage all council and certifier approvals. Our team handles the paperwork, responds to authority queries and keeps the process moving so you're not waiting longer than necessary.
Step 5 — Construction
Your dedicated project supervisor oversees every stage of construction. You receive regular updates and have full visibility into progress throughout the build.
Step 6 — Handover
A thorough final inspection, a personalised walkthrough of your new home, and the keys. The moment you've been working towards.
Frequently Asked Questions
How long does a knockdown rebuild take?
From initial consultation to handover, most knockdown rebuild projects take 12–18 months. The timeline depends on design complexity, council approval timeframes and construction scope. We provide a detailed project timeline at the contract stage.
Do I need to move out during the build?
Yes. Once demolition begins, the property is an active construction site. Most of our KDR clients rent locally during the build. We time the demolition to minimise the period between vacating and construction completion.
What is the difference between a DA and CDC approval?
A Development Application (DA) goes through your local council and typically takes 3–6 months. A Complying Development Certificate (CDC) is assessed by a private certifier and is faster — usually 4–8 weeks — but only applies to homes that meet specific planning standards. We advise you on the best pathway for your site.
How much does a knockdown rebuild cost in Sydney?
Costs vary based on size, design complexity, site conditions and finish level. As a guide, Bourne Group luxury custom homes start from $1M. We provide a detailed fixed-price quote after completing our free site assessment.
Can you handle the demolition as well?
Yes. We coordinate the entire demolition process with our trusted, licensed contractors. We advise on timing, disconnection of services and council notification requirements so you don't have to manage multiple parties.
Our Knockdown Rebuild Process
In-house design by Elle. Our co-founder Elle designs every home we build. For a knockdown rebuild, this means your new home is conceived as a complete design vision — not pieced together from a standard inclusions list.
Local knowledge. We are based in Castle Hill and build across Sydney's most in-demand suburbs. We know the local councils, the approval timelines, the soil conditions and the trades that deliver quality work.
Fixed-price HIA contracts. Complete financial transparency. You know your total cost before we break ground — no variations surprises, no budget blowouts.
Single point of contact. From your first consultation to handover day, you deal directly with Jason and the Bourne Group team. No sales reps. No handoffs. No surprises.
20+ years experience. We have been building luxury custom homes in Sydney for over two decades. Knockdown rebuilds are one of our core specialities.
Ready to Find Out What's Possible on Your Block?
If you're thinking about a knockdown rebuild in Sydney, the best first step is a conversation. We'll visit your site, assess its potential, and give you an honest picture of what's achievable — at no cost and no obligation.
Call Jason directly: 0419 629 268
Office: 02 9317 3588
Email: office@thebournegroup.com.au
Address: Unit 31A/9 Hoyle Avenue, Castle Hill NSW 2154
Builders Licence: 313109C