Home Extensions Collaroy

If you’re looking for home extensions Collaroy homeowners trust, you’ve found the right team. Monstructions handles everything from initial design through to final handover, proudly serving Collaroy, Narrabeen, Dee Why 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 Collaroy, expertly designing and building additions that suit the homes and families throughout the Northern Beaches area. We’re proud to serve homeowners throughout Collaroy, Wheeler Heights and Long Reef 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 Collaroy
Built For The Way You Live

Collaroy’s housing stock is predominantly brick and tile homes built from the 1960s through to the 1980s, sitting on decent sized blocks between 550 and 700 square metres. Many of these properties have original layouts with small living areas and dated kitchens that don’t suit how families live today. An extension makes far more sense than selling up and paying stamp duty when you’ve already got the land and location sorted.

We’ve completed extensions throughout Collaroy and the surrounding Northern Beaches suburbs, working with families who need more space but want to stay in the area. Our projects range from single storey rear additions that open up the kitchen and living zones, through to full second storey extensions that add multiple bedrooms and bathrooms. Every job is managed by our licensed team from concept right through to completion.

The Collaroy property market has remained strong thanks to the beachside location and quality schools nearby. Adding a well designed extension typically returns more value than the build cost, especially when you factor in what you’d lose selling and buying elsewhere. Families are choosing to extend rather than move because they want to keep their kids in local schools and stay close to the beach.

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 Collaroy?

Every extension is different. Click the button below to hear back from us within 2 hours!

Why Collaroy 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

Manly

"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

Dee Why

"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

Narrabeen

Products we use

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FAQS

Got a question?

How much does a home extension cost in Collaroy?

A single room addition in Collaroy 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.

How long does a home extension take in Collaroy?

Most home extensions in Collaroy take between three to six months from development approval through to final handover. The timeline depends on the scope of work, with single storey additions typically faster than second storey builds. We’ll give you a realistic timeframe during the quote process and keep you updated throughout construction.

Do I need council approval for a home extension in Collaroy?

Most home extensions in Collaroy require either a Development Application or Complying Development Certificate from Northern Beaches Council. We handle the full approval process on your behalf, including working with certifiers and managing all required documentation. Our team knows the local planning rules and what council looks for in extension applications.

Can I add a second storey to my Collaroy home?

Most single storey homes in Collaroy can support a second storey addition, though it depends on your existing structure and council height restrictions. We arrange structural assessments to confirm feasibility and design the addition to suit your block and the local streetscape. Many Collaroy homeowners choose this option to capture better ocean views and avoid losing backyard space.

Do you service Collaroy and surrounding suburbs?

Yes we service Collaroy and all surrounding suburbs. Call 1300 098 730 to discuss your project.

Monstructions provides home extensions across Northern Beaches, including Coasters Retreat, Collaroy Plateau and all surrounding suburbs.