Home Extensions St Johns Park
If you’re looking for home extensions St Johns Park homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving St Johns Park, Greenfield Park, Bonnyrigg Heights and all neighbouring suburbs across the Canterbury Bankstown & Western Sydney area.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
Get A Free Quote Now!
🔥 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 Johns Park, expertly designing and building additions that suit the homes and families throughout the Canterbury Bankstown & Western Sydney area. We’re proud to serve homeowners throughout St Johns Park, Greenfield Park and Bonnyrigg 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 Johns Park
Built For The Way You Live
St Johns Park is filled with predominantly brick homes built from the 1970s through to the 1990s, sitting on decent sized blocks that average around 550 to 650 square metres. Many of these homes feature the classic floor plans of their era with smaller living areas and limited outdoor entertaining space, making them ideal candidates for a well designed extension. The good block sizes mean there’s genuine potential to add a second storey or extend outwards without losing your backyard.
We’ve completed extensions right across St Johns Park and neighbouring suburbs like Greenfield Park and Bonnyrigg, working with families who need more space but love their location. Most of our projects here involve opening up the back of the home, adding a second living area, or building up to create extra bedrooms and bathrooms. Our team understands the local building conditions and what works best for the housing stock in this part of Western Sydney.
St Johns Park offers affordable family living with good access to schools, shops along The Horsley Drive, and the M7 for commuters. Properties here remain more affordable than many parts of Sydney, which means investing in an extension makes real financial sense compared to upsizing. A quality extension can add significant value while keeping you in a suburb where families actually know their neighbours and kids can walk to school.
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 Johns Park?
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 Johns Park 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 Johns Park?
A single room addition typically starts from around $80,000, while a full ground floor extension generally ranges from $150,000 depending on size and finishes. Second storey additions start from $250,000 due to the structural work involved. We provide a free quote after assessing your home and discussing exactly what you need.
How long does a home extension take in St Johns Park?
Most home extensions take between 3 to 6 months from DA approval through to final handover, depending on the scope and complexity of your project. Smaller single room additions can be quicker, while full second storey builds or large ground floor extensions take longer. We’ll give you a realistic timeline during your initial consultation.
Do I need council approval for a home extension in St Johns Park?
Most extensions in St Johns Park require either Development Approval or a Complying Development Certificate from Canterbury Bankstown Council. There are some exemptions for very minor works, but anything substantial needs approval. Our team manages the entire approval process for you, including all documentation and liaison with council and certifiers.
Can I add a second storey to my St Johns Park home?
Yes, the majority of brick homes in St Johns Park were built with footings and structural walls that can support a second storey addition, though this needs to be confirmed by a structural engineer. We arrange all necessary inspections and engineering assessments as part of the design process. A second storey is often the best option when you want to keep your backyard and add multiple bedrooms or a full upstairs living area.
Do you service St Johns Park and surrounding suburbs?
Yes we service St Johns Park and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Canterbury Bankstown & Western Sydney, including Prairiewood, Wakeley and all surrounding suburbs.