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Blackburn home extensions

Blackburn home extensions

Redesign your Blackburn house with seamless extensions

From start to finish
Watch our process >

HIA 2022 Finalist
Professional small builder/renovator

Practically perfect and perfectly practical house extensions

Any good home extension or renovation needs to balance form and function. The final design needs to provide space, light and flow, but it also needs to blend seamlessly into the existing architecture. With 45 years of experience, Supa Group’s design and construction teams specialise in finding that delicate balance between the pleasing and the practical.

Whether your Blackburn home needs a refreshing bathroom renovation or an entirely new second storey, we’ll get it done. With a certified Victorian Master Builder by your side, anything is possible.

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Permits? No problem. We’ll liaise with Blackburn’s council.

No matter how minor your house extension ideas may be, nothing moves forward without the proper city council permits. But you can leave that to us.

Supa Group offer more than just the premier builders in Blackburn — we have an in-house team of liaisons who will apply for all the necessary council permits on your behalf. While we take care of the approvals, you can work with our design team to explore ideas.

Personalised designs for unique Blackburn house extensions

Our home extension services

After four decades in the industry, our team appreciate a good challenge. Work with us, and you won’t be choosing a ready-made plan out of a book. We want to create renovation and extension designs that do more than just capture the spirit of your home — we want to add to it. From spacious open-plan kitchen and living area renovations to serene home-office extensions, our collaborative design process ensures your new home will suit your personality as well as your needs.

Looking to extend the footprint of your home to give your growing family more room to move? We don’t believe you should have to compromise on where you live to get more room! Our home extensions give you the lifestyle you desire in the home you love.

Work, family or rest and relaxation — we do it all

Growing families who need to add bedrooms and bathrooms, flexible workers looking to build out their home offices, gardeners and hobbyists who need dedicated space for their interests — we are happy to tackle all kinds of design challenges.

All you need to do is tell us what you want your Blackburn home to be, and we’ll design an extension solution to suit.

  • Dining, entertainment and living room extensions
  • Bedroom and bathroom extensions
  • Master bedroom and en-suite extensions
  • Outdoor living and garden extensions
  • Laundry and amenity extensions
  • Second-storey extensions
  • Full renovations
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Fixed price & completion time

Concept to completion

Free design consultation

Over 45 years experience

Our process is simple, transparent and fun

Your extension from start to finish

Deciding to add an extension to your house is a major commitment, and it’s natural for anxiety to accompany the excitement. That’s why we’ve refined our process to create a straightforward, stress-free path from design to completion. Council paperwork, contractor negotiations, scheduling — we’ll handle the details so you can enjoy the excitement.

See how your home extension will progress so you know what to expect.Learn about our process in detail.

A consultation for a home extension


We get to know you and what you want to achieve with our extension services, so we can design the ideal solution for you.

3D concept design of a home extension


We create 3D designs of your home extension so you can do a virtual walkthrough and make any changes you need.

A house extension being built


Once you approve your design, we provide a guaranteed start date for your extension, and we keep it on schedule.

Inspirational living room area photo


You can finally enjoy your dream home. We also provide complimentary aftercare services if you experience any issues.

A Melbourne second storey home extension photo

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See what’s possible

See what we can do

We’ve added extensions to a number of houses in and around the Blackburn area. To show you what we can do and, hopefully, to give you a few ideas, we’ve gathered together some of our favourite projects. Don’t forget to explore our complete list of projects, too.

Have a look at our recent projects to get a feel for the type of transformation you can expect in your own home. Get ideas, be inspired, and then we’ll create your perfect home.

Ground floor extension in Mitcham
  • New master bedroom and ensuite
  • New modern kitchen and dining area
  • New alfresco area
Seamless second story extension to an Edwardian in Thornbury
  • Second story extension
  • New Master bedroom with ensuite and living area
  • Created a study to the ground floor
Art deco maisonette luxury in Balwyn North
  • Upper floor extension with new bedrooms and living
  • Main bathrooms, powder room, open rumpus, and storage
  • Rich natural details and design elements throughout

Hear from our clients


Frequently asked questions

Are council permits necessary for house extensions in Blackburn?

Yes, they are. Blackburn is in the Whitehorse City Council, which has clear regulations around when you need permits. Depending on the scale of the work, you will need planning and building permits to construct extensions to your Blackburn home.

Supa Group’s in-house team are more than happy to apply for council permits and permissions on your behalf.

Can I remain in my home while construction goes on?

Yes, you can. You may continue to live in your home as long as you have safe access to your bathroom, kitchen and bedroom. Depending on the work we need to do, one or more of these essential spaces might become temporarily inaccessible. In that case, you will need to make alternative living arrangements. This won’t come as a surprise; our schedule will make it clear exactly when you’ll need to leave and when you can return.

I’d like to pick the contractors. Is that alright?

Of course, Supa Group will happily work with any contractors you choose to work on your home. However, they must meet our OH&S and insurance standards, and must also commit to keeping to our construction schedule so that we can meet our agreed-upon completion date.

Can extensions be added to heritage homes in Blackburn?

Yes, although there are stricter regulations to be met. As with most other councils, Whitehorse Council demands that any extensions or renovations done to Blackburn’s heritage-listed homes respect the architectural integrity and history of the original structure. Supa Group’s team will ensure our designs blend seamlessly into your heritage home.

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