Home Extensions St George
If you’re looking for home extensions St George homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving St George and all neighbouring suburbs.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
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🔥 June Special! Free site inspection + council feasibility check included. Limited to 3 jobs this month. Call 1300 098 730
IS YOUR HOME READY FOR AN EXTENSION?
Monstructions specialises in home extensions St George, expertly designing and building additions that suit the homes and families throughout the St George area. We’re proud to serve homeowners throughout St George and surrounds with our licensed team managing everything from initial design through to final handover.
Fully licensed general contracting
Quality Workmanship
Over a decade of renovation experience across Sydney
Home Extensions St George
Built For The Way You Live
St George is filled with brick homes built from the 1950s through to the 1980s, typically sitting on 550 to 700 square metre blocks. Many of these homes feature original floorplans with separate living areas, small kitchens and limited connection to the backyard. An extension opens up the layout, adds the extra bedroom or living space your family needs, and brings these solid homes into modern family living without the cost and hassle of moving.
We’ve completed extensions across Kogarah, Hurstville, Rockdale, Carlton, Arncliffe, Mortdale, Oatley and right through the St George suburbs. Whether you need a second storey addition to capture more space on a tighter block or a rear extension that opens up to your north facing backyard, we design and build for how St George families actually live. Our team knows the local councils, understands the approval requirements, and delivers quality work that suits the character of homes throughout the area.
With St George schools, parks and transport making families want to stay in the area, extending your current home often makes more financial sense than buying up. Property values across Kogarah, Hurstville and surrounding suburbs continue to rise, and a well designed extension adds serious value while giving you the space you need. You keep the location, the community connections and the yard the kids love, all while creating a home that works for your family now and into the future.
Our Home Extension Services
Whether you need a single room addition or a full second storey, our licensed team delivers quality extensions on time and within budget.
Ground Floor Extensions
Expand your living space with a ground floor addition tailored to your block and lifestyle.
Second Storey Additions
Add a full second storey to your home and double your living space without moving.
Rear & Side Extensions
Maximise your block with a rear or side extension designed to suit your existing home.
DA & CDC Approval Managed
We handle the full council approval process so you don’t have to deal with the paperwork.
Benefits of a Home Extension
Extending your home is one of the best investments you can make as a Sydney homeowner.
Significant Property Value Increase
A well-built extension adds substantial value to your property at resale
Stay in Your Suburb
Extend instead of moving and keep the location, school zone and community you love
More Space for Your Family
Get the extra bedroom, living area or open plan space your family actually needs
Cheaper Than Buying
In most Sydney suburbs, extending costs far less than buying a larger home
Get Started with Monstructions Today!
Ready to extend your home and create the space your family needs? Contact us today for a free quote and let our home extension specialists bring your vision to life.
Our Extension Process
Initial Consultation
Free consultation to discuss your extension ideas, block constraints and budget.
Design and DA Approval
We design your extension and manage the full council approval process on your behalf.
Site Preparation
Full site preparation, structural work and foundation ready for building.
Construction
Licensed builders construct your extension to the highest standard with all trades managed.
Final Handover
Full inspection and walkthrough before handover to ensure everything is built to specification.
How Much Does a Home Extension Cost in St George?
Every extension is different. Click the button below to hear back from us within 2 hours!
Single Room Addition
Smart upgrades that make a big impact.- Ground floor extension
- New bedroom, living or study
- Full council approval managed
- Licensed builder end to end
- Fixed price contract
- Tailored to your block and budget
Full Home Extension
Full transformation of your home footprint.- Multi-room ground floor addition
- Kitchen, living, bedroom combinations
- Full structural engineering
- Council DA approval managed
- Fixed price contract
- Tailored to your home and lifestyle
Second Storey Addition
Double your space without moving.- Complete second storey build
- Custom design and architecture
- Full structural and engineering
- Council DA approval managed
- All trades managed end to end
- Fixed price contract
- Fully customised to your vision
Why St George Homeowners Choose Us For Their Extension?
As home extension specialists across Sydney, we manage everything from design and approvals through to construction and handover.
10+ Years of Extension Experience
Our team has delivered ground floor extensions, second storeys and full home additions across Sydney.
We Manage the Full Process
From DA approval to final handover, we handle every step so you don’t have to.
Trusted by Sydney Homeowners
Homeowners across Sydney trust Monstructions to deliver their extension on time and to budget.
Licensed and Fully Insured
Every extension is built by licensed professionals with full insurance and a fixed price contract.
Don't Take Our Word For It
"I contacted Monstructions to get an idea of a price for doing an extension on my home. Of course I contacted many other people but they were the only ones who came back to me and assisted in giving me an idea of the price. I was so grateful. I wouldn't hesitate in recommending this company as we couldn't be more happy with the team, thank you for your help and support."
Amanda
"We had a plan of what we wanted with our 2nd story + granny flat addition, but also had a budget to meet..the Monstructions team worked hard to make that happen for us. With a few little hiccups along the way from weather delays, the boys kept the job moving as smoothly as possible and the team were amazing in keeping mess to a minimum. Allowing us to stay at home during the reno. 100% highly recommended!"
Angela
"Fantastic! Monstructions did an amazing job on my home extension, all the boys that worked on my house were professional and polite, and their quality of work was second to none. From drawings to completion it was a breeze working with them. They were easy to work with and extremely efficient and professional. Thank you for all the hard work and effort, I will recommend you to everyone I know."
David
Products we use
FAQS
Got a question?
How much does a home extension cost in St George?
A single room addition in St George typically starts from around $80,000, while a full ground floor extension with kitchen and living areas starts from $150,000. Second storey additions generally start from $250,000 depending on size and finishes. We provide a detailed, transparent quote after assessing your home and discussing exactly what you need.
How long does a home extension take in St George?
Most home extensions in St George take between 3 to 6 months from DA approval through to final handover, depending on the size and complexity of the project. A straightforward rear extension might be completed in 3 to 4 months, while a full second storey addition typically takes 5 to 6 months. We provide a clear timeline during the planning stage so you know exactly what to expect.
Do I need council approval for a home extension in St George?
Most extensions in St George require either Development Application (DA) approval or a Complying Development Certificate (CDC) through Bayside or Georges River councils. The specific approval depends on your property, the size of the extension and setback requirements. Our team manages the full approval process for you, from drawings through to final certification.
Can you extend a brick home in St George?
Absolutely, most homes across St George are solid brick construction which provides an excellent base for extensions. We work with these homes every day, matching brickwork where needed or creating modern contrast with rendered or weatherboard finishes. The existing structure is assessed during design to ensure the extension integrates properly with your original home.
Do you service all areas of St George?
Yes we service all suburbs across St George. Call 1300 098 730 to discuss your project.
Suburbs We Service in St George
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