Home Extensions Botany
If you’re looking for home extensions Botany homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Botany, Mascot, Eastlakes and all neighbouring suburbs across the Eastern Suburbs 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 Botany, expertly designing and building additions that suit the homes and families throughout the Eastern Suburbs area. We’re proud to serve homeowners throughout Botany, Mascot and Eastlakes with our licensed team managing everything from initial design through to final handover.
Home Extensions Botany
Built For The Way You Live
Botany is full of original brick homes from the 1950s and 60s, mostly sitting on decent sized blocks between 550 and 700 square metres. These post war homes have solid bones but often lack the living space and open plan layouts families need today. Many homeowners find extending at the rear or adding a second level makes far more sense than uprooting to a new suburb.
We’ve completed dozens of extensions across Botany and nearby suburbs like Mascot and Pagewood, working with everything from original fibro cottages to solid brick family homes. Our team knows the local building styles, understands council requirements for Bayside, and designs additions that complement the existing home rather than looking like an obvious add on. Whether it’s opening up the back of the house or adding upstairs bedrooms, we make sure the extension works with what you’ve already got.
Botany offers genuine value compared to suburbs closer to the harbour, with good schools, parks like Botany Bay National Park nearby, and improving amenity as the area continues to develop. Property prices have climbed steadily over the past decade, and a well designed extension can add $200,000 or more to your home’s value while giving you the extra space you actually need. Most families would rather invest in their current home than face the costs and stress of buying elsewhere in Sydney’s current market.
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 Botany?
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 Botany 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 Botany?
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 including structural work and stairs. We provide a free detailed quote after assessing your home and discussing exactly what you need.
How long does a home extension take in Botany?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the scope and complexity of the build. The DA approval process with Bayside Council can add another 2 to 3 months before construction starts. We provide a clear timeline during the quoting stage so you know exactly what to expect.
Do I need council approval for a home extension in Botany?
Most extensions in Botany require either a Development Application or Complying Development Certificate through Bayside Council. Some smaller additions may qualify as exempt development, but this depends on your specific property and what you’re planning. Our team manages the entire approval process including architectural plans, engineering, and lodging all required documentation.
Can you extend original brick homes in Botany?
Absolutely. Most of Botany’s post war brick homes are perfect candidates for extension work, with solid foundations and good structural integrity. We regularly extend these homes by opening up the rear, adding second storeys, or building out to the side where space allows. The key is matching the new work to the existing home so everything feels cohesive rather than tacked on.
Do you service Botany and surrounding suburbs?
Yes we service Botany and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Eastern Suburbs, including Hillsdale, Mascot and all surrounding suburbs.


