Home Extensions Bonnet Bay
If you’re looking for home extensions Bonnet Bay homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Bonnet Bay, Como, Jannali and all neighbouring suburbs across the Sutherland Shire 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 Bonnet Bay, expertly designing and building additions that suit the homes and families throughout the Sutherland Shire area. We’re proud to serve homeowners throughout Bonnet Bay, Como and Woronora 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 Bonnet Bay
Built For The Way You Live
Bonnet Bay features predominantly brick and tile homes built during the 1970s and 1980s, sitting on generous blocks that back onto bushland reserves or overlook the Georges River. Many of these family homes were designed with smaller living areas and closed off floor plans that no longer suit how families live today. An extension offers the opportunity to open up your home, add light filled living spaces and create better connection to those beautiful outdoor areas.
We’ve completed dozens of extensions throughout Bonnet Bay and neighbouring suburbs like Como and Jannali, working with the local building character while delivering modern, functional spaces. Our team understands the unique considerations of building in this bushfire prone area, managing all compliance requirements while designing extensions that make the most of your leafy surroundings. From single level rear additions to full second storey builds, we handle every aspect of your project from concept to completion.
Bonnet Bay remains tightly held with families wanting to stay in the area for the quality schools, waterside location and community feel. Rather than selling and moving, many homeowners are choosing to extend, adding value while keeping the lifestyle they love. A well designed extension can transform a dated 1970s home into a modern family residence worth significantly more than your investment.
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 Bonnet Bay?
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 Bonnet Bay 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 Bonnet Bay?
A single room addition typically starts from $80,000, while a full ground floor extension generally ranges from $150,000 depending on size and finishes. Second storey additions start around $250,000 for a complete upper level. We provide a free, detailed quote after assessing your home and understanding exactly what you need.
How long does a home extension take in Bonnet Bay?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the scope of work. A single room addition might be completed in 3 months, while a large second storey could take closer to 6 months. We provide a clear timeline during the quoting process so you know exactly what to expect.
Do I need council approval for a home extension in Bonnet Bay?
Most extensions in Bonnet Bay require either a Development Application or Complying Development Certificate from Sutherland Shire Council. Some smaller additions may qualify as exempt development, but this depends on your specific circumstances and property constraints. Our team manages the entire approval process for you, liaising with council and certifiers to get your project approved.
Can I extend on a bushfire prone block?
Yes, many Bonnet Bay properties fall within bushfire prone land areas but extensions are absolutely possible with the right design and materials. We design and build to the required Bushfire Attack Level ratings, using compliant materials and construction methods. Our experience working throughout the Sutherland Shire means we handle these requirements as standard practice.
Do you service Bonnet Bay and surrounding suburbs?
Yes we service Bonnet Bay and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Sutherland Shire, including Barden Ridge, Bundeena and all surrounding suburbs.