Home Extensions Terrey Hills
If you’re looking for home extensions Terrey Hills homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Terrey Hills, Duffys Forest, Belrose and all neighbouring suburbs across the Northern Beaches area.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
Get A Free Quote Now!
🔥 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 Terrey Hills, expertly designing and building additions that suit the homes and families throughout the Northern Beaches area. We’re proud to serve homeowners throughout Terrey Hills, Davidson and Frenchs Forest 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 Terrey Hills
Built For The Way You Live
Terrey Hills is defined by its larger blocks, typically 1000sqm and up, with many homes from the 1970s and 1980s sitting on acreage style properties. The bushland setting attracted families looking for space and privacy, but these older homes often lack the open plan living areas and indoor outdoor flow that modern families need. Rather than moving away from this quiet pocket of the Northern Beaches, many homeowners are choosing to extend and improve what they already have.
We’ve completed extensions across Terrey Hills and surrounding suburbs like Duffys Forest and Davidson, working with the sloping blocks and native vegetation that define this area. Our team understands local requirements around bushfire ratings and council guidelines specific to the Northern Beaches. We work closely with homeowners to create extensions that respect the natural environment while delivering the extra space families need.
Terrey Hills offers a lifestyle that’s hard to find anywhere else in Sydney, with acreage living just 30 minutes from the city and beaches. Property values have climbed steadily as buyers discover this area, making a well designed extension a smart investment that adds genuine value. Adding a modern open plan living area, extra bedrooms or a second storey can transform an older home into something that suits your family for decades to come.
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 Terrey Hills?
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 Terrey Hills 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 Terrey Hills?
A single room addition typically starts from $80,000, while a full ground floor extension begins around $150,000. Second storey additions generally start from $250,000 depending on size and finishes. We provide a free quote after assessing your property and understanding what you need from the space.
How long does a home extension take in Terrey Hills?
Most extensions take between 3 to 6 months from council approval through to final handover. The timeline depends on the scope of work, weather conditions and any site specific challenges like sloping blocks or access. We provide a clear schedule before starting and keep you updated throughout the build.
Do I need council approval for a home extension in Terrey Hills?
Most extensions require either a Development Application or Complying Development Certificate through Northern Beaches Council. The approval process can be more detailed in Terrey Hills due to bushfire zones and environmental considerations. Our team manages the full approval process including plans, surveyors and all council submissions.
Can you build on sloping blocks in Terrey Hills?
Yes, we regularly work with sloping sites across Terrey Hills and the surrounding area. Many properties here have significant fall, which can actually create opportunities for undercroft storage or split level designs. Our team has the engineering and building experience to deliver quality extensions on challenging terrain.
Do you service Terrey Hills and surrounding suburbs?
Yes we service Terrey Hills and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Northern Beaches, including Seaforth, Warriewood and all surrounding suburbs.