Home  /  Services  /  Home Extensions
Home Extensions

Home extensions in Melbourne

More space without the stress of moving. From extra bedrooms and bigger kitchens to full second storeys, we design and build extensions that blend seamlessly with your existing home.

Seamless

Existing-Home Match

Fixed-Price

Contracts

Licensed

& Insured

Free

On-Site Consultation

Room To Grow

Extend the home you already love

Moving is expensive and disruptive. Often the smarter choice is to add the space you need to the home and neighbourhood you already love, matching materials, proportions and style so the new work belongs.

Designed to look like one home, not an old house with an obvious addition.

Before

After

Client Testimonials

What our clients say

Posted on Google Google
Jamil Hassan profile picture
Jamil Hassan
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Avenue Building Group provided excellent service for our bathroom and home renovation project. The team was professional, detail-oriented, and delivered high-quality workmanship throughout. They understood our requirements clearly and turned our vision into a well-designed, functional space. Highly recommended for anyone looking for reliable renovation services in Melbourne
Posted on Google Google
Michael Howden profile picture
Michael Howden
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Avenue Building Group have been nothing short of exceptional in delivering my bathroom renovation. Anthony initially turned up on time to quote, got the quote back to me within 24 hours, and was able to start the following Monday. While this wasn't a huge job, there were some tricky aspects to it such as under floor heating that we wanted to try to salvage. Anthony and his tradies took great care in their work and really pushed to meet deadlines. These works were part of a house sale due to separation and I have to say that not only is Anthony an outstanding builder who knows his stuff and employs highly skilled tradies, he's also a very kind guy who understood the impact that something like this can have on people. I cannot recommend Avenue Building Group highly enough and will be using them for any future renovations or builds that I undertake. It's rare to find a builder you can trust and who isn't just out to hit you with variations but I can assure you Anthony is one of those rare builders that you can absolutely trust to be fair and reasonable, all while delivering high quality works and finishes.
Posted on Google Google
Ibraham Barakat profile picture
Ibraham Barakat
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Avenue Building Group have been amazing from the get go. I organised a complete home renovation with their team. From planning to carrying out the job to care at the job site…I felt one hundred percent heard throughout. Amazing quality with detail and workmanship. It was a pleasure working with Anthony and his team. Looking forward to my next project with them. The team definitely deliver way above expectations and took the stress out of home improvement.
Posted on Google Google
Subash Upadhyay profile picture
Subash Upadhyay
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We had Avenue Building Group renovate our entire home, and the results were amazing. Their attention to detail and dedication to our project made the whole process smooth and enjoyable.
Posted on Google Google
Bibash Giri profile picture
Bibash Giri
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
The group at Avenue Building Group is amazing! They managed our bathroom renovation with expertise and accuracy. The dedication of Avenue Building Group to eco-friendly construction solutions is praiseworthy. Our environmentally friendly home improvement project was a triumph. Strongly advised.
Your Options

Which extension is right for your home?

Not sure whether to build out, up or to the rear? Here is when each option tends to suit.

Ground Floor Extensions

Add bedrooms, a bigger kitchen or new living space without adding another level.

Second Storey Additions

Create significant new living space upstairs while preserving more of your backyard.

Rear & Living Extensions

Expand the back of your home for a larger, light-filled kitchen, dining and family living area.

What's Included

Built to feel like one home

Extensions are more complex than a new build because we are working with your existing home. We manage that from the first design to the final coat of paint.

Concept & Design

Plan an extension that improves your layout while working with the existing structure and site.

Fixed-Price Contracts

A clear, fixed-price contract before we start, so you know exactly what your extension will cost.

Approvals & Permits

We manage the approvals and paperwork your extension needs, so you do not have to navigate it.

Quality Construction

New work built to integrate naturally with your existing home, designed to feel like one home.

Project Management

One dedicated point of contact keeps the work coordinated from planning through completion.

Handover & Warranty

A final walkthrough and the peace of mind of a warranty standing behind our work.

How It Works

Your extension, step by step

A clear process that manages the parts people worry about: approvals, working around your existing home, and keeping disruption low.
01

Free Consultation

Discuss your space, goals, property and budget.
02

Design & Fixed Quote

Plan the extension and agree the scope and fixed price.
03

Permits & Planning

We manage the approvals and preparation before construction.

04

Construction

Build and coordinate the extension while keeping disruption managed.

05

Handover & Warranty

Final walkthrough and handover of your new space.

Our Work

Recent projects

Custom Family Home

Reservoir, VIC

New double-storey custom home, four bedrooms with open-plan living.

Custom Family Home

Coburg, VIC

Complete internal renovation including kitchen, bathrooms and living areas.

Second Storey Addition

Brunswick, VIC

Second storey addition adding three bedrooms and a family bathroom.
Good To Know

Home extension FAQs

The questions extension clients ask most. Have another? Call us on 0411 708 256.

Cost depends on the size and complexity of the extension, the finishes, the condition of your existing home, the approvals required and any structural changes. Rather than an unsupported figure, we give you a clear fixed-price quote after the design stage. 

Most extensions require some form of approval, depending on the size of the work and your local council. We handle the approvals and permits for you as part of the project.

It depends on the size and complexity of the extension. We give you a realistic timeline with your quote and keep you updated throughout. 

We plan the works to keep disruption to a minimum and talk you through what to expect for your specific project, so there are no surprises during the build.

Yes, and it is one of the things we care about most. We match materials, proportions and detailing so your extension looks like it has always been part of the house.

We start with a free consultation to understand your space and goals, then plan the extension and give you a clear, fixed-price quote before any work is committed.

We build across Melbourne’s northern suburbs and surrounding areas. If you are not sure whether we cover your suburb, just ask.

We do. You receive a clear, fixed-price contract before any work begins, so you know exactly what your extension will cost from the outset.

Let's Talk

Ready to make the most of your block?

Tell us a little about your block and your goals, and we will come back to you to talk through what is possible.
Call us directly
Send us a message

Request your free extension quote

Tell us about your project and we will be in touch within one business day.

We will review your project details and contact you to discuss the next steps.