Home Extensions Dundas Valley
If you’re looking for home extensions Dundas Valley homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Dundas Valley, Dundas, Telopea and all neighbouring suburbs across the Hills, Parramatta & Penrith area.
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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 Dundas Valley, expertly designing and building additions that suit the homes and families throughout the Hills, Parramatta & Penrith area. We’re proud to serve homeowners throughout Dundas Valley, Carlingford and North Rocks and surrounds with our licensed team managing everything from initial design through to final handover.
Home Extensions Dundas Valley
Built For The Way You Live
Dundas Valley is known for its established brick homes built mainly from the 1960s through to the 1980s, sitting on generous blocks that often back onto bushland or creek reserves. Many original homes feature compact floor plans with smaller living areas and limited storage, making them ideal candidates for extensions. With good sized blocks and strict planning controls to protect the green character, a well designed extension is often the smartest way to get the space you need without leaving the area.
We’ve completed extensions throughout Dundas Valley and nearby suburbs like Dundas and Carlingford, working with the area’s unique topography and bushfire prone land requirements where applicable. Our team understands the local council requirements and how to design additions that respect the leafy, low density feel of the suburb. From rear living extensions to second storey additions that capture treetop views, we build to suit the way families actually live.
Families stay in Dundas Valley for the schools, the quiet streets and the proximity to Macquarie Park and the city via Carlingford station. Rather than moving to find more space, many homeowners are choosing to extend their existing homes and add serious value in the process. A quality extension can transform a dated three bedroom home into a modern family residence without sacrificing the bushland privacy that makes this suburb special.
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 Dundas Valley?
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 Dundas Valley 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."
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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!"
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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."
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David
Products we use
FAQS
Got a question?
How much does a home extension cost in Dundas Valley?
A single room addition typically starts from $80,000, while a full ground floor extension starts from $150,000 depending on size and finishes. Second storey additions generally start from $250,000. We provide a free, detailed quote after assessing your property and understanding exactly what you need.
How long does a home extension take in Dundas Valley?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the scope and complexity of the work. The approval process itself can add another 2 to 4 months. We provide a clear timeline upfront and keep you informed at every stage.
Do I need council approval for a home extension in Dundas Valley?
Most extensions in Dundas Valley require either a Development Application or Complying Development Certificate from Parramatta Council. Some properties also fall within bushfire prone land zones, which adds extra planning requirements. We handle the full approval process including all documentation, plans and liaison with council or certifiers.
Can I extend on a sloping block in Dundas Valley?
Absolutely. Many properties in Dundas Valley sit on sloping blocks, and we regularly design extensions that work with the natural fall of the land. Depending on the slope, this might involve split level designs, stepped foundations or undercroft parking. We assess every site individually to find the most practical and cost effective solution.
Do you service Dundas Valley and surrounding suburbs?
Yes we service Dundas Valley and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Hills, Parramatta & Penrith, including Dundas, Epping and all surrounding suburbs.


