Home Extensions Mount Vernon
If you’re looking for home extensions Mount Vernon homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Mount Vernon, West Pennant Hills, Cherrybrook 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 Mount Vernon, expertly designing and building additions that suit the homes and families throughout the Hills, Parramatta & Penrith area. We’re proud to serve homeowners throughout Mount Vernon, West Pennant Hills and Beecroft with our licensed team managing everything from initial design through to final handover.
Home Extensions Mount Vernon
Built For The Way You Live
Mount Vernon homes mostly date from the 1980s and 1990s, sitting on generous blocks between 600 and 800 square metres. These brick homes were built in an era when families were smaller and living spaces more compartmentalised, which means many homeowners now find themselves short on open plan kitchen and living space. Rather than relocate from this quiet, established pocket between Pennant Hills and Castle Hill, extending your existing home makes more financial sense.
We’ve completed dozens of extensions across Mount Vernon and the broader Hills District over the past decade. Our team knows the local building requirements and council processes inside out, which means fewer delays and better outcomes for you. Whether you need an additional bedroom and bathroom or a complete ground floor renovation with open plan living, we design extensions that match your home’s existing character.
Mount Vernon sits in the Castle Hill High School catchment, which makes it popular with families looking to settle long term in a well connected location. Property values in the area have climbed consistently, and a well designed extension typically adds more value than the construction cost. Instead of selling and paying stamp duty plus moving costs, most Mount Vernon families find that extending their current home gives them exactly what they need while building equity.
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 Mount Vernon?
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 Mount Vernon 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 Mount Vernon?
A single room addition typically starts from $80,000, while a full ground floor extension runs from $150,000 depending on finishes and complexity. Second storey additions generally begin around $250,000. We provide a free detailed quote after assessing your property and discussing your needs.
How long does a home extension take in Mount Vernon?
Most extensions take between three and six months from development approval through to final handover, depending on the size and complexity of your project. Council approval times vary but we manage that entire process for you. We provide a clear timeline before work begins so you know exactly what to expect.
Do I need council approval for a home extension in Mount Vernon?
Most extensions in Mount Vernon require either a Development Application or Complying Development Certificate through The Hills Shire Council. There are some exceptions for very minor additions, but anything involving structural changes or additional living space will need approval. Our team handles all the paperwork, council liaison and certifier coordination as part of our service.
Can I add a second storey to my Mount Vernon home?
Yes, most Mount Vernon homes are structurally suitable for a second storey addition given they were built from the 1980s onwards with solid brick construction. We conduct a thorough assessment of your existing foundations and frame to determine what reinforcement might be needed. A second storey is often the best option when you want significant extra space without losing backyard area.
Do you service Mount Vernon and surrounding suburbs?
Yes we service Mount Vernon and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Hills, Parramatta & Penrith, including Londonderry, Mulgoa and all surrounding suburbs.


