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Add value with a double-storey extension

From start to finish
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HIA 2022 Finalist
Professional small builder/renovator

Fixed price & completion time

Concept to completion

Free design consultation

Over 45 years experience

Outstanding building services

It’s time to take your home up a level. Double storey extensions can add immeasurable worth to your home and lifestyle.

It’s time to take your home up a level. Double-storey extensions can add immeasurable worth to your home and lifestyle.

As upstairs extension specialists, we believe in turning the house you love into a home with all the space you need for your family, lifestyle, and comfort.

When building a second storey, we create unique designs that you can’t get from a knockdown rebuild. Our in-house designs provide outstanding value for money since you don’t need additional architecture services. And we do it all within your budget.

Adding on top of your existing ground floor with a two-storey extension will add more space, an increase in square metre area, and an increase in significant value to your home. From comfortable bedrooms for every child, to a luxurious parents' retreat, to a vast open-plan living space and entertaining area — the options are limitless.

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With Supa Group, adding a second storey to a house is a breeze. You are in full control from design inception, to the final completion of the project.
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Second storey additions don’t have to be difficult, our streamlined process minimises disruption to your daily life and it means you’ll know what to expect at every stage.
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Concept design
Our team are experienced in designing double storey layouts, including staircases and effective layout ratios between the ground and second floor.
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Contract & Build
You’ll have full visibility while we are building your second storey extension. We’ll ensure that everything is up to code and looking great before we finish up.
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Enjoy your space
You can sit back and admire the brand new second storey addition to your home. We also provide complimentary aftercare services.

Add value to your home

A second-storey extension not only adds space for the family to grow. It can also add to the value of your home and the quality of life of everyone in it. Families need space to grow while spending valuable time together. A second-storey extension from Supa Group guarantees you this, allowing you to enjoy your home comfortably for years to come.

Supa Group has over 40 years of experience helping Melbourne families remain in the homes they love. Our comprehensive end-to-end process offers you:

  • A Free Initial Design Consultation to help you create the home you deserve
  • Financing referrals (if required) to assist you in realising your goals sooner
  • Fixed prices, allowing you complete control over the project
  • Fixed completion times, with the option to remain in your home if possible
  • 10-year structural guarantee on works, ensuring that you can enjoy your home for years

Considering a multi-generational home?

Transform your home into a space built for your family – contact us today, and let's design your multi-generational dream home extension together!

Learn more

Choose a master builder with decades of experience

A multi-award winner and proud to be both a long-term Master Builder and HIA member, another big reason for our reputation is our highly trained and experienced staff, from management to trades.

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Master Builders

As a member of Master Builders Victoria, we’re recognised as a reliable and reputable business that completes works to the highest industry standards.

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HIA Member

We’re proud to be a part of Australia’s biggest residential building association that promotes fairness, integrity, and value.

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Award winning

Most recently, we were finalists in the Professional Small Builder/Renovator category in the 2022 HIA Awards.

See what we can do

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 a more spacious home.

Californian bungalow in Coburg
  • New open plan living area
  • New outdoor entertaining area
  • Redesigned and renovated ensuite
Ground floor extension in Mitcham
  • New master bedroom and ensuite
  • New modern kitchen and dining area
  • New alfresco area
Ground and second storey extension in Kew
  • Ground floor extension with new open living, kitchen, and dining area.
  • First floor extension with two new bedrooms.
  • Master bedroom with luxury ensuite.

Book a free consultation for your extension

Hear from our clients


Your questions answered

Will I need to move out during construction?

In most cases, homeowners find it preferable to move out of the home for at least part of the construction. We plan a double storey extension to minimise disruptions to your living area, and you can continue to live there throughout the construction as long as you still have access to kitchen and bathroom facilities. 

You can discuss all options with our team, and your building supervisor will also keep you up to date as each stage of your construction progresses, so you’ll know exactly what to expect every step of the way.

How much do second-storey extensions cost?

Your second-storey extension costs depend on the details of your project. But you can rest assured that the Supa Group team will work within your budget. Since we handle all the design and construction ourselves, we can ensure that your extension stays on schedule and on budget.

The exact cost of your project will depend on a number of factors, which may include:

  • External vs internal renovations
  • If we need to add a second storey to a single-storey home
  • Site access
  • The existing condition of your home
  • The style and quality of fixtures used in the project
  • Other changes to the existing home or existing dwelling

To understand the house extension costs of what you want to achieve with an upper storey addition, get in touch with our design consultants.

Are second-storey extensions more difficult than ground-floor extensions?

At Supa Group, we are specialists in creating the perfect double-storey extension for clients. Since we have all the necessary expertise, a second-storey extension isn’t actually any more difficult for us than a ground-floor extension. Depending on the specific details of your home and block, it may actually be easier and less disruptive to extend up instead of out.

As a second-storey extension expert, occupational health and safety is always our priority. We take great effort to ensure adequate fall protection is in place so that our tradespeople can work safely.

What can I achieve with a second-storey extension?

Building upward and extending outwards can add major advantages to a home, including new space and style to the existing structure. A common second-storey extension involves adding a master bedroom or two bedrooms for children plus a living area. As part of an entire process of ground and second-story extension, we can:

  • Retain garden spaces for children
  • Add extra bedrooms
  • Improve storage space
  • Increase living space
  • Invite more natural light
  • Create new outdoor living space
  • Work to budget and time constraints
  • Separate bedrooms from main living areas

For a growing family, no home renovation is too much trouble. From a simple ground floor extension to building a second storey, Supa Group can do it all.

Are there any council regulations I should be aware of before adding another storey extension?

Yes, local council requirements are an important part of the home extension process. When adding a second-storey extension, it’s especially important to understand what you can and cannot do in terms of changing the facade and structure of a building, particularly if it has a heritage overlay.

Before the construction process takes place, our experienced design consultants will advise you of what’s required in terms of local council approval and town planning. Get in touch with a project manager or design consultant for a free consultation.

Book a free consultation to start your journey

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