Home Extensions Gladesville
If you’re looking for home extensions Gladesville homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Gladesville, Hunters Hill, Putney and all neighbouring suburbs across the North Shore 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 Gladesville, expertly designing and building additions that suit the homes and families throughout the North Shore area. We’re proud to serve homeowners throughout Gladesville, Hunters Hill and Putney with our licensed team managing everything from initial design through to final handover.
Home Extensions Gladesville
Built For The Way You Live
Gladesville is home to a mix of Federation and interwar cottages alongside solid brick homes from the 1960s and 70s, many sitting on generous blocks between 550 and 800 square metres. These older homes typically have three bedrooms, single bathrooms and closed off living areas that don’t suit modern family life. A well planned extension opens up your floor plan, adds much needed space and transforms your home without the stress and expense of buying elsewhere.
We’ve completed dozens of extensions throughout Gladesville and the surrounding suburbs, from simple rear additions to full second storey builds. Our team knows the local housing stock inside out, from the solid bones of post war brick homes to the character details worth preserving in older cottages. Every project is managed by our licensed builders who live and work across the North Shore.
With the median house price in Gladesville sitting well above $2 million, renovating makes financial sense for families who love the area’s waterfront access, good schools and village feel. A quality extension can add $300,000 to $500,000 in value while giving you the extra bedrooms, bathroom or open plan living space your family actually needs. Most of our clients tell us they wish they’d extended years earlier rather than putting up with a home that no longer works for them.
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 Gladesville?
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 Gladesville 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 Gladesville?
A single room addition in Gladesville typically starts from $80,000, while a full ground floor extension starts from $150,000 and a second storey addition from $250,000. Every home is different, so we provide a free quote after visiting your property and understanding exactly what you need.
How long does a home extension take in Gladesville?
Most home extensions in Gladesville take between 3 to 6 months from council approval through to final handover. The timeline depends on the scope of work, weather and any unexpected issues we uncover once we open up the existing structure. We’ll give you a realistic timeframe during the quoting process.
Do I need council approval for a home extension in Gladesville?
Most extensions require either a Development Application or Complying Development Certificate from Hunters Hill Council. The approval path depends on your property’s zoning, heritage considerations and the size of your proposed extension. Our team manages the entire approval process including all architectural drawings, engineering reports and council submissions.
Can you extend a Federation cottage in Gladesville?
Absolutely. We’ve extended many Federation and interwar cottages throughout Gladesville, carefully matching brickwork and preserving original details where it matters. The key is designing an addition that respects the existing home’s character while creating modern, light filled living spaces at the rear. Most Federation homes have excellent bones and respond beautifully to a thoughtful extension.
Do you service Gladesville and surrounding suburbs?
Yes we service Gladesville and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across North Shore, including Hunters Hill, Henley and all surrounding suburbs.


