Sydney knockdown rebuild specialists
Love your location.
Build the home you really want.
Replace an outdated home with a custom design created for your block, your family and the way you want to live.
- Building Sydney homes since 1979
- 8,000+ completed builds
- 10-year structural warranty
A smarter fresh start
When rebuilding makes more sense than renovating
A major renovation can be constrained by the existing structure, layout and hidden problems. A knockdown rebuild gives you the freedom to start again—without leaving the street, schools and community you already value.
Our team helps you assess the block, shape the design, understand the approvals and bring the build together under one coordinated process.
BeforeReal transformation
Use your block better
Create better light, flow, storage, entertaining areas and room for the whole family—with a home designed around today rather than patched around yesterday.
Discuss what’s possible on your property
AfterA clear path from idea to new home
Your knockdown rebuild, managed from start to finish
- 01
Property assessment
We discuss your goals, budget, site conditions and whether rebuilding is the right approach.
- 02
Design and planning
Your new home is shaped around your block, lifestyle and priorities—not a generic floor plan.
- 03
Approvals and selections
We coordinate the details needed to prepare your project for construction.
- 04
Demolition and build
Your project moves through demolition and construction with one experienced team.
Why Sydney Extensions & Designs
Experience that reduces uncertainty
- More than 45 years building and transforming Sydney homes
- Design and construction expertise in one coordinated team
- Fixed-price homes built with clear expectations
- Extended 10-year structural warranty
- Showroom and team based in Roseville
Not sure whether to extend, renovate or rebuild?
Get advice before you commit
A Home Transformation Assessment gives you a practical starting point. Tell us about your property and plans, and our building and design team can help you understand the most suitable next step.
Free initial consultation
Let’s talk about your new home
Share a few details and a Sydney Extensions & Designs specialist will contact you to discuss your property, priorities and next steps.
Your details are used only to respond to your enquiry.