Home Extensions Alexandria
If you’re looking for home extensions Alexandria homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Alexandria, Erskineville, Beaconsfield and all neighbouring suburbs across the Inner West area.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
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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 Alexandria, expertly designing and building additions that suit the homes and families throughout the Inner West area. We’re proud to serve homeowners throughout Alexandria, Waterloo and Redfern 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 Alexandria
Built For The Way You Live
Alexandria is home to a mix of Federation terraces, Victorian workers cottages and converted warehouse apartments, many sitting on compact blocks between 150 and 300 square metres. The older housing stock often lacks the open plan living and outdoor integration modern families need, making extensions a smart solution to gain space without leaving this well connected suburb. Many homes here have rear lane access, which can simplify construction logistics for additions.
We’ve completed numerous extensions across Alexandria and nearby Erskineville, working with everything from single storey terraces to semi detached cottages. Our team understands the local council requirements through Inner West Council and knows how to design extensions that respect the character of older homes while creating genuinely functional modern spaces. Whether it’s adding a second level or extending out the back, we handle the full build from concept to completion.
With Alexandria’s proximity to the CBD, airport and Green Square precinct, property values here remain strong and homeowners are choosing to extend rather than move. A well designed extension can add $200,000 to $400,000 in value while giving you the extra bedroom, home office or open kitchen and living area your family actually needs. The alternative is buying something bigger in the same area, which typically costs far more than building an extension on the home you already own.
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 Alexandria?
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 Alexandria 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 Alexandria?
A single room addition in Alexandria typically starts from $80,000, while a full ground floor extension ranges from $150,000 depending on size and finishes. Second storey additions generally start from $250,000 including structural work and internal stairs. We provide a detailed free quote after an onsite assessment of your property.
How long does a home extension take in Alexandria?
Most home extensions in Alexandria take between 3 to 6 months from council approval through to final handover. Timeframes depend on the scope of work, with single level rear extensions at the faster end and full second storey additions taking longer. We provide a clear construction timeline during the quoting process so you know what to expect.
Do I need council approval for a home extension in Alexandria?
Yes, most extensions in Alexandria require either a Development Application or Complying Development Certificate through Inner West Council. Minor alterations under 20 square metres may qualify for exemptions, but this depends on your specific property and proposed works. We manage the full approval process including plans, documentation and council liaison as part of our service.
Can you extend a terrace house in Alexandria?
Absolutely. We regularly extend terrace houses throughout Alexandria, typically adding space to the rear or building a second storey addition above the existing ground floor. The key is designing around heritage controls, party wall agreements with neighbours and making the most of limited block depth. Our team knows how to work within these constraints to deliver genuinely usable extra space.
Do you service Alexandria and surrounding suburbs?
Yes we service Alexandria and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Inner West, including Wareemba, Beaconsfield and all surrounding suburbs.