Home extensions

Trusted Home Extension Builders in Melbourne

Turn the house you love; into the home you’ve always dreamed of.


Design with us, or supply your own plans

Benefit from our expertise when you work alongside our team to design and build your dream extension. Our personalised approach means you can bring your plans or enjoy the ease of an end-to-end service.


Guaranteed craftsmanship

With over 20 years in the industry, we’re established home extension builders in Melbourne that you can rely on. Our passion for quality building and our 10-year structural guarantee will allow for a hassle-free extension that you’ll enjoy for years to come.

Personalised approach

Our low-volume custom-designed building approach is streamlined, simplified and stress free You’ll work directly with the builder to plan and build a quality extension without any of the restrictions or set layouts that volume builders can impose.

Create the space you’ve always wanted

Work with home extension builders in Melbourne who can help unlock your home’s potential. Unlike a knockdown rebuild, home extensions allow you to retain the charm and character of your original home whilst providing the space and liveability you desire.

A home extension allows you to skip the cost and hassle of moving out and renting and will enable you to remain connected to the suburb and street you love. Whether you’re dreaming of a ground-floor extension with an open modern plan design or adding an additional living space for your growing family, we can help. We specialise in innovative and seamless extensions that add value to your life and your home.


Home Extension Builders in Melbourne

Book your consultation

Speak with trusted sloping block builders in Melbourne

Our home extension services

Whether you’re looking for small home extensions in Melbourne or planning a larger project, such as a second storey, we’ll approach your project with an experienced eye. As a small-volume, bespoke builder, we thrive on custom projects. Our years of experience allows us to realise complex and challenging designs easily.

As home extension experts, we’re experienced in working with period homes to modern homes that could benefit from additional space and contemporary living style.


Home Extension Builders in Melbourne

Ground floor extensions

A ground-floor extension is a cost-effective way to add space and incorporate a modern open-plan living style into your home. Our holistic approach considers factors such as room layout, storage space and the flow from your home to alfresco areas.

If you have a sloped or graded block, you can rely on our split-level home-building experience. We will help you to maximise your indoor and outdoor living spaces.

Home Extension Builders in Melbourne

Second Storey extensions

A second-storey extension is an excellent option for those who need more space without increasing the footprint of their home or where land is at a premium.

As experienced home extension builders in Melbourne, we specialise in seamless second-storey additions that blend beautifully with the original house. Our experience working with blocks that have tight access or are uniquely shaped means we can confidently approach unique and challenging builds.

When you work directly with the builder, you have the opportunity to be in regular contact with the person directly responsible for the project. This more personal relationship allows for greater attention to detail and flexibility such as being able to stay in your home during the build if possible. 

Home Extension Builders in Melbourne


To get the most out of your extension, a renovation of some of the existing areas of your home may also be required. Whether you want to update your kitchen, modernise your bathroom or update your flooring for a seamless flow between the existing house and the new, we’ll work with you to incorporate any renovations to your existing home into your project.

Your renovations will be carefully planned to make the most of your building timeline so you can enjoy your new space sooner. If you’re utilising our drafting service, you can trust our draftsman to develop innovative plans that maximise the benefits of your joint renovation and extension project.

Home Extension Builders in Melbourne

Our Process

Benefit from on-time completions and excellent communication.  We are home extension builders in Melbourne with a customer-focused approach. You can rely on us to provide clear expectations, timelines, and check-ins along the way.



Book an obligation-free consultation to discuss your goals, timeframes, and budget. your home.



We work with you to develop plans that optimise your space or utilise your existing plans.


Building works start with progress communicated regularly along the way.


Enjoy a smooth handover and transition back into your home.

What our Clients have to say

Lun & Eileen Sui

Victorian period home renovation and extension in Hawthorn East.

We would like to extend our gratitude to Mark and the Mastercraft team following the completion of our family home extension and renovation over the course of 2014.

Frequently Asked Questions

How much does an extension cost in Melbourne?

Allow between $2500 and $5000 per square metre. A second storey may cost approximately another 30% again. Read our blog to explore the costs of extending your home in more detail.

How do I find a good extension builder?

Look for a registered building practitioner (like us) to ensure that they are qualified and will build to Australian standards. Extensions require extra care and consideration compared to new or volume builds. Lastly, take the time to consult with a builder before going ahead. You can book a no-obligation consultation with us to discuss your project.

Is it cheaper to build new or extend?

When you extend, you’ll save on renting costs as you won’t have to move out of your home for an extended period, like when you knock down and rebuild. A house extension allows you to retain the charm of your home but improve its liveability. It can also increase the value of your home and, in the case of period homes, access a market when the demand for modernised period homes is high.

Do I need planning permission for my house extension?

The need for planning permission depends on the scope of work and your council. During the planning phase, we can support you through the planning permission process.

We’re home extension builders in Melbourne and its surrounds.

We proudly service the following areas and more. Please get in touch if you don’t see your area listed.

Albert Park | Alphington | Armadale | Ashburton | Balwyn | Blackburn | Brighton | Burwood | Brunswick | Camberwell | Canterbury | Carlton | Caulfield | Clifton Hill | Eaglemont | Eltham | Fairfield | Fitzroy | Glen Iris | Greensborough | Hawthorn | Heidleberg | Ivanhoe |  Kew | Kooyong | Malvern | Melbourne | Mont Albert | Montmorency | Northcote | Prahan | Richmond | South Yarra | Surrey Hills | Thornbury | Toorak | Warrandyte.