Extension Options
Whether you need an extra bedroom, expanded living area, or a second storey, we have solutions for every need.
Ground Floor Extensions
Expand your living space horizontally with seamless additions
- Open-plan living
- New bedrooms
- Expanded kitchen
- Outdoor rooms
Second Storey Additions
Build up when space is limited with a stunning second level
- Master retreats
- Kids' zones
- Home offices
- Entertainment areas
Rear Extensions
Connect your home with outdoor living for the ultimate lifestyle
- Indoor-outdoor flow
- Alfresco dining
- Pool surrounds
- Garden rooms
Why Choose a Home Extension in Australia?
Home extensions in NSW, VIC, QLD, and across Australia offer an affordable alternative to moving. Whether you're looking to add a bedroom, expand your kitchen, or create an open-plan living area, a well-designed home extension can increase your property value by 15-25% while providing the extra space your family needs.
Our experienced building consultants specialise in residential extensions, house additions, and home renovation projects throughout Australia. We connect you with licensed builders who understand local council requirements, building codes, and zoning regulations to ensure your extension project runs smoothly from design through to completion.
Popular Home Extension Projects
From single-room additions to multi-level extensions, discover the most popular ways Australian homeowners are expanding their living space and increasing property value.
Kitchen Extensions
Expand your kitchen into a modern open-plan living and dining area. Perfect for families who love to entertain.
$45,000 - $80,000
6-10 weeks
Second Storey Addition
Add an entire second level to your home, typically including master suite, additional bedrooms, and bathrooms.
$150,000 - $350,000
4-6 months
Rear Extension
Extend the back of your home to create additional living space with seamless indoor-outdoor flow.
$60,000 - $120,000
8-14 weeks
Bedroom & Ensuite Addition
Add a new bedroom with ensuite bathroom, perfect for growing families or creating a guest suite.
$35,000 - $70,000
6-10 weeks
Note: All costs are estimates and vary based on location, materials, finishes, and complexity. Contact us for an accurate quote tailored to your specific project requirements.
Your Extension Journey: Next Steps
From initial consultation to project completion, here's what you can expect when planning your home extension with Compare the Builder.
Free Consultation
Discuss your extension ideas, budget, and requirements with our expert building consultants.
Book your free 30-minute consultation
Site Assessment
We evaluate your property, check council requirements, and determine feasibility for your extension project.
Get professional site assessment
Builder Matching
Receive competitive quotes from our network of vetted, licensed builders specialising in extensions.
Compare multiple quotes side-by-side
Project Completion
Your chosen builder manages construction while we provide ongoing support until completion.
Enjoy your expanded home
Home Extension FAQs
Common questions about home extensions in Australia
Do I need council approval for a home extension?
Most home extensions require council approval or a complying development certificate (CDC). Requirements vary by state and local council. Our consultants help navigate the approval process for extensions in NSW, VIC, QLD, SA, WA, and other Australian states.
How much does a home extension cost in Australia?
Extension costs typically range from $2,000 to $4,000 per square meter, depending on the type of extension, materials, location, and finishes. A basic single-room extension might cost $35,000-$70,000, while a large second-storey addition can range from $150,000-$350,000.
How long does it take to build a home extension?
Timeline varies by project size. Small single-room extensions typically take 6-10 weeks, while larger projects like second-storey additions may take 4-6 months. Council approval can add 4-8 weeks before construction begins.
Will a home extension add value to my property?
Well-designed extensions typically add 15-25% to your property value, often exceeding the cost of construction. Extensions that add bedrooms, bathrooms, or modern open-plan living areas tend to provide the best return on investment.
Can I live in my home during the extension?
In most cases, yes. Your builder will work with you to minimize disruption. However, some projects (especially those involving kitchens or bathrooms) may require temporary alternative arrangements for certain periods.