Home Extensions Kearns
If you’re looking for home extensions Kearns homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Kearns, Minto, Raby and all neighbouring suburbs across the South West Sydney area.
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 Kearns, expertly designing and building additions that suit the homes and families throughout the South West Sydney area. We’re proud to serve homeowners throughout Kearns, Claymore and Bow Bowing with our licensed team managing everything from initial design through to final handover.
Home Extensions Kearns
Built For The Way You Live
Kearns is home to a mix of Housing Commission properties and privately owned homes built mainly through the 1970s and 1980s, sitting on decent sized blocks that give you real options for extending. Many properties here are single storey brick veneer or fibro homes with generous backyards. An extension makes perfect sense when you’ve got the land and want to stay in an established area close to schools and services.
We’ve completed extensions throughout Kearns and neighbouring suburbs like Minto and Claymore, working with families who need more space but don’t want to uproot their lives. Whether it’s adding a bedroom for a growing family, opening up the living area, or building a granny flat at the rear, we know these homes and what works. Our team handles all approvals, design and construction so you don’t have to chase multiple contractors.
Kearns offers affordable entry into the property market with good access to Campbelltown CBD and the M5 corridor for work. Adding a well designed extension can significantly increase your property value while giving your family the space you need right now. With blocks typically offering room to expand, extending makes more financial sense than selling up and moving, especially with current stamp duty and moving costs.
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 Kearns?
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 Kearns 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 Kearns?
A single room addition in Kearns typically starts from $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 free quote and detailed breakdown specific to your home and what you’re trying to achieve.
How long does a home extension take in Kearns?
Most home extensions in Kearns take between 3 to 6 months from council approval through to final handover. The timeline depends on the scope of work, weather and any structural considerations specific to your property. We’ll give you a clear schedule during the quoting process and keep you updated throughout the build.
Do I need council approval for a home extension in Kearns?
Most home extensions require either a Development Application or Complying Development Certificate through Campbelltown Council. The approval pathway depends on your extension size, setbacks and what’s already on the property. We manage the full approval process for you, including all documentation, plans and liaison with council or certifiers.
Can you extend older fibro homes in Kearns?
Absolutely. Many homes in Kearns have fibro or older brick construction and we regularly extend these properties. We assess the existing structure first, ensure proper tie in with the new extension, and often recommend updating parts of the original home at the same time. The key is getting the foundations and structural connection right from the start.
Do you service Kearns and surrounding suburbs?
Yes we service Kearns and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across South West Sydney, including Ingleburn, Kentlyn and all surrounding suburbs.


