Home Extensions Monterey
If you’re looking for home extensions Monterey homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Monterey, Sans Souci, Ramsgate and all neighbouring suburbs across the St George 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 Monterey, expertly designing and building additions that suit the homes and families throughout the St George area. We’re proud to serve homeowners throughout Monterey, Brighton Le Sands and Kyeemagh 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 Monterey
Built For The Way You Live
Monterey features predominantly brick and fibro homes built through the 1950s to 1970s on relatively modest blocks, many between 450 and 650 square metres. These older homes often have small kitchens, limited living areas and dated layouts that no longer suit how modern families actually live. An extension lets you stay in this affordable, convenient suburb while creating the space your family needs.
We’ve completed extensions throughout Monterey and neighbouring suburbs like Sans Souci and Ramsgate Beach, working with the original building footprints to maximise space without overwhelming the block. Our team understands the local housing stock and knows how to work with older homes, addressing issues like asbestos, poor drainage and outdated electrical systems during the build. Whether it’s opening up the back of the house to create an open plan living area or adding a second storey, we handle the full scope of work.
Monterey’s location near Botany Bay, good schools and easy access to the airport makes it a practical choice for families who want affordability without sacrificing convenience. Properties here remain well below the Sydney median, which means investing in an extension delivers solid returns while letting you stay in an established community. Adding space and modernising your home keeps you competitive in the market without the stress and cost of moving.
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 Monterey?
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 Monterey 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 Monterey?
A single room addition typically starts from $80,000, while a full ground floor extension begins around $150,000. Second storey additions start from $250,000 depending on size and finishes. We provide a free detailed quote after assessing your property and discussing your needs.
How long does a home extension take in Monterey?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the size and complexity of the project. Smaller single room additions can be completed faster, while second storey builds or major renovations take longer. We provide a realistic timeline during the quoting process and keep you updated throughout the build.
Do I need council approval for a home extension in Monterey?
Most extensions require either a Development Application or Complying Development Certificate through Bayside Council. We manage the entire approval process including plans, submissions and liaising with council or certifiers. Our team knows the local requirements and works to get your approvals through as smoothly as possible.
Can you extend older fibro homes in Monterey?
Absolutely. Many Monterey homes were built with fibro cladding and we have extensive experience working with these older properties. We assess the existing structure, address any asbestos safely if present, and design extensions that work with your home’s original construction. Our builders know how to blend new work with older builds while meeting current standards.
Do you service Monterey and surrounding suburbs?
Yes we service Monterey and all surrounding suburbs. Call 1300 098 730 to discuss your project.