Home Extensions Annandale
If you’re looking for home extensions Annandale homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Annandale, Leichhardt, Stanmore 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 Annandale, expertly designing and building additions that suit the homes and families throughout the Inner West area. We’re proud to serve homeowners throughout Annandale, Petersham and Camperdown and surrounds 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 Annandale
Built For The Way You Live
Annandale is known for its Federation homes and Victorian terraces built mostly between 1880 and 1920, typically sitting on smaller blocks between 200 and 400 square metres. These beautiful period homes often have limited living space by today’s standards, making a well designed extension the smartest way to gain the extra room your family needs. With narrow blocks and heritage considerations, extending these properties requires local knowledge and careful planning.
We’ve completed dozens of home extensions throughout Annandale and nearby suburbs like Stanmore and Leichhardt, working with the unique challenges that come with Federation and Victorian architecture. Our team knows how to match existing character details while creating modern, functional living spaces that actually work for young families. From rear ground floor additions to second storey extensions, we handle projects of all sizes across the Inner West.
Annandale’s proximity to the CBD and local schools makes it incredibly popular with families who need more space but don’t want to leave the area. Property values here remain strong, and a quality extension typically adds far more value than it costs while giving you the home you actually want to live in. Rather than moving and paying stamp duty plus agent fees, most homeowners find extending their current property makes better financial sense.
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 Annandale?
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 Annandale 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 Annandale?
A single room addition typically starts from $80,000, while a full ground floor extension usually ranges from $150,000 depending on size and finishes. Second storey additions generally start from $250,000 due to the structural work required. We provide a free detailed quote after assessing your property and understanding exactly what you need.
How long does a home extension take in Annandale?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the size and complexity of your project. The council approval process itself can add another 2 to 4 months before construction starts. We’ll give you a realistic timeline during the quoting process so you can plan accordingly.
Do I need council approval for a home extension in Annandale?
Most extensions in Annandale require either a Development Application or Complying Development Certificate from Inner West Council. Some smaller projects under 25 square metres may qualify for an exemption, but this depends on your specific property and setbacks. Our team manages the entire approval process for you, including all architectural drawings and engineering reports.
Can you match Federation details on my Annandale home?
Yes, we regularly work with Federation and Victorian homes across Annandale and understand how to match existing period details like timber fretwork, corbels and decorative cornices. Our builders and joiners have extensive experience replicating heritage features so your extension looks like it’s always been part of the original home. We can also provide a contemporary contrast if that’s more your style.
Do you service Annandale and surrounding suburbs?
Yes we service Annandale and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Inner West, including Forest Lodge, Leichhardt and all surrounding suburbs.