Home Extensions Dee Why
If you’re looking for home extensions Dee Why homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Dee Why, Curl Curl, Brookvale and Collaroy and all neighbouring suburbs across the Northern Beaches 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 Dee Why, expertly designing and building additions that suit the homes and families throughout the Northern Beaches area. We’re proud to serve homeowners throughout Dee Why, Freshwater and Narrabeen 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 Dee Why
Built For The Way You Live
Dee Why’s housing stock is mostly brick and fibro homes built from the 1960s through to the 1990s, sitting on decent sized blocks that give you real options for extending. Many homes here were built as modest family houses when the Northern Beaches was still developing, and they’re now ripe for renovation. The typical 550 to 700 square metre block means you can add a second storey, extend at the rear, or build out to the side without eating up all your outdoor space.
We’ve completed extensions throughout Dee Why and the surrounding Northern Beaches suburbs, working with the local housing styles and council requirements. Our team knows the area well, from the older cottage style homes near the lagoon to the brick houses up towards the plateau. We handle everything including structural engineering, council approvals, and all trade coordination so your extension runs smoothly from start to finish.
Dee Why remains a popular family suburb with good schools, the beach, and the lagoon all close by, which means property values hold strong. Many homeowners here are choosing to extend rather than move because you simply can’t beat the location and lifestyle at a comparable price. A well designed extension can add $200,000 to $400,000 in value while giving you the extra space your family needs without the hassle and cost of relocating.
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 Dee Why?
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 Dee Why 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 Dee Why?
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. A second storey addition generally starts from $250,000 including structural work, stairs and finishes. We provide a free detailed quote after assessing your home and discussing your specific needs.
How long does a home extension take in Dee Why?
Most home extensions take between 3 to 6 months from council approval through to final handover, depending on the scope and complexity of the work. The DA approval process with Northern Beaches Council typically adds another 8 to 12 weeks before construction starts. We’ll give you a realistic timeline during the quoting process based on your specific project.
Do I need council approval for a home extension in Dee Why?
Most extensions in Dee Why require either Development Approval or a Complying Development Certificate through Northern Beaches Council. The approval path depends on your property, the size of the extension, and site constraints like bushfire zones or flood planning. We manage the entire approval process including plans, engineering, and council submissions so you don’t have to deal with the paperwork.
Can I add a second storey to my Dee Why home?
Most homes in Dee Why are suitable for a second storey addition, especially the single level brick homes common throughout the suburb. We assess your existing structure, check council height limits for your specific zone, and design the addition to work with your current house. Many Dee Why homeowners choose a second storey to capture better ocean or lagoon views while keeping their backyard intact.
Do you service Dee Why and surrounding suburbs?
Yes we service Dee Why and all surrounding suburbs. Call 1300 098 730 to discuss your project.
Monstructions provides home extensions across Northern Beaches, including Davidson, Duffys Forest and all surrounding suburbs.