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House Extensions Brisbane

The house works and the street is right. You just need more room.

  • 70+ Years of Combined Experience
  • Seamless Support from Start to Finish
  • Custom Homes Designed Around You
Open plan living room with a stone island bench in a custom home on Russell Street, Cleveland

Built Around You

Home Extension Builders, Brisbane & Redlands

We design and build house extensions across Brisbane, the Redlands and Bayside. Single storey, two storey, at the back or the side, planned so the new part reads as if it was always there.

If you are looking at an extension, the house is probably not the problem. You like where you live and you do not want to move.
What you have run out of is room. An extension adds the space you need to the home you already have.

When an Extension Makes Sense

A renovation reworks the rooms you already have. That works when the space is there and the layout is the problem. When there is no more viable room to rework, the answer is to add some.

An extension is usually the right call when:

  • The house is sound: the structure is good and you are happy with how it sits on the block
  • The block has room: there is space at the back or side to build into
  • You want to stay: the location matters more to you than starting again somewhere else
  • You need specific rooms: a main bedroom suite, a second living area, more bedrooms, or room for another generation

If the house itself is the problem, a knock down rebuild may be the better path. We will tell you which one makes more sense for your site.

Thinking About Extending Your Home?

Talk to us before you commit to a design. A look at the house and the block early tells you what is possible, where an extension will sit best and what approvals your address will need. It is far easier to get those answers before the plans are drawn than after.

Our Commitment

Single and Two Storey Extensions

Single storey extensions are usually built at the back of the house. They open the living areas out to the yard and add bedrooms or a main suite on the same level as everything else.
 
Two storey extensions are built out from the back or side of the house, with living space downstairs and bedrooms above. A double storey extension gives you more room while using less of the backyard.
 
Either way, the extension is designed with the existing house, not stuck onto it. Roof lines, ceiling heights, floor levels, windows and materials are worked through so the old and the new sit together properly.

Garage Conversions in Brisbane and the Redlands

Some homes have more garaging than the family uses.
A garage conversion turns that space into living space inside the house: a guest suite, a home office, a studio or a second living room.

A good garage conversion should not look like a converted garage. It needs proper floor levels, insulation, windows, ventilation and finishes, so the room feels like it was designed as part of the house. We treat a garage conversion the same way we treat an extension, designed with the home and finished to the same standard.

House Extensions Across Brisbane, the Redlands and Bayside

We build house extensions across the Redlands, including Cleveland, Raby Bay, Ormiston, Wellington Point, Thornlands, Birkdale and Capalaba. In Bayside we work in Manly and Wynnum, and in Brisbane’s inner east across Bulimba, Hawthorne, Balmoral, Morningside, Norman Park, Camp Hill and Coorparoo.

Parts of the inner east sit under Brisbane City Council’s Traditional Building Character Overlay, which affects what an extension can look like from the street. We check what applies to your address before design starts.

Thornlands Luxury Home Builder

ARCHITECTURALLY Designed for Real Life

Custom Home Design for Practical Living and Beautiful Finishes

We plan the layout around how your family will use the house. Then we put the time into the detailing, so your custom built home works well every day.

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Luxury Custom Home Builder Brisbane
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Luxury Custom Home Builder Brisbane

How We Design and Build a Home Extension

Extensions are different to new builds. New work has to join an existing structure, and the family is often still living in the house. That is why we spend the time on the planning before anything is built.

Extension Site Assessment

We look at the house and the block together: the structure, the floor levels, the setbacks, the services and how the extension will connect to what is already there.

Extension Concept Design

We design the extension around how you live and how the existing house works. Where the new rooms go, how you move between old and new, and how it looks from the street and the yard.

Approvals for Your Extension

We work out what approvals your address needs and manage them for you, including any overlay that applies to your property.

Extension Design and Specification

Finishes, joinery and fixtures are resolved before construction starts, so the new part of the home matches the standard of the rest of it.

Building the Extension

One team and one point of contact. We plan the build so the connection to the existing house is handled carefully, and keep you informed about what is happening and when.

Extension Handover

The extension is finished to the same standard as a new home, and we walk through it with you at handover.

Home Extension Builder FAQs

Have another question? Please reach out to us!

With over 20 years of experience building homes across Brisbane, Redlands, and the Bayside, we’ve seen it all, from tricky blocks to complex approvals and every design challenge in between. Whatever your vision, chances are we’ve successfully delivered something just like it.

Yes. We build two storey extensions out from the back or side of the house, designed so the floor levels and roof line work with the existing home.

Usually, yes. We plan the build and the join to the existing house with you during design, so you know what to expect before work starts.

Yes. We design the extension with the existing house from the first drawing, not as a box added on afterwards.

If the house is sound and you like it, extending is usually the better option. If the structure, the layout or the condition of the house is the problem, a knock down rebuild can make more sense. We will look at your site and give you an honest view of both.

Yes. We work out what your address needs, including any overlay that applies, and manage the approvals as part of the project.

 
Yes. We convert garages into living space inside the house, such as a guest suite, home office, studio or second living room, finished to the same standard as the rest of the home.

Yes, we are fully licensed by the QBCC under licence 15141694, and we are proud members of Master Builders Queensland. We also hold comprehensive insurance for all our custom home projects.

Book a consultation. We will look at your house and block, talk through what you need, and tell you what is possible on your site.

Client Testimonials

What Our Clients Are Saying

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Kieran Hearley profile picture
Kieran Hearley
20 October 2024
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We were referred to Steve & Brent by a friend and were told they were amazing. After talking to several mainstream building companies, we talked to Steve & Brent and were immediately impressed with their communication and professionalism. We have just finished building our dream home with Iconic and we could not be happier. The whole process was seamless and the team guided us through every single step. Steve's vast building experience really shines through at every point in the process and he helped us design the most amazing home for our family. Iconic use only the best contractors in the business, so you know the people they are using to build your home are the best in Brisbane. Steve and Brent were there for us at every possible decision making point in the process of designing our home and were always available to answer questions and give advice on how to approach any kind of issue. The Iconic team are simply amazing. One of the guys Cam was just fantastic on site, great bloke and nothing was ever an issue. Right up to handover day, the guys were meticulously going through the house to ensure when we took ownership everything was 100% perfect for us. I highly recommend Iconic to anyone looking to build their dream home. In my opinion there isn't any team that is better. Thanks Steve, Brent & Cam for building our dream home!
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Cindy Jeeves profile picture
Cindy Jeeves
19 August 2024
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We have built four homes, and working with Steve & Brent from Iconic Homes has been the best experience by far. Steve & Brent built our beautiful home on Long street and watching our dream turn into a really was so exciting. From the very beginning, they approached our build as if they were building their own home. Their attention to detail and commitment to quality were evident in every suggestion they made, all of which greatly improved the final result. They took the time to thoroughly understand our vision, making sure every detail was exactly what we wanted. There were no hidden costs—everything was transparent from start to finish. The workmanship was exceptional, and the entire process was smooth and stress-free. I highly recommend Iconic Homes to anyone looking to build. Their dedication, expertise, and personal touch make all the difference. We couldn't be happier with our new home, it is absolutely stunning!
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Gavin hursthouse profile picture
Gavin hursthouse
20 February 2022
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We can highly recommend Iconic Homes and Construction without reservation. They are highly professional and we couldn’t be happier with the service, workmanship and craftsmanship delivered. Being in another state had no conflict with our build as Steve and Brent would make regular phone calls and as the project progressed, they would make regular video calls to go over finer details and/or ways project details could be improved or refined. They are always available and happy for catch ups/ discussions on the project whether it be a late evening or weekend to discuss things if need be. We were always kept informed with mile stone marks of the building. They have a large range of qualified tradesmen at hand that deliver quality workmanship. The attention to detail is second to none, completing works with care and precision. We are extremely happy that we have had no hesitation in starting our next project with them. Gavin & Sheridan ⭐️⭐️⭐️⭐️⭐️
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Matt Cranitch profile picture
Matt Cranitch
14 January 2022
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For people as fussy as us, using Steve and Brent for our Hamptons style new build was an obvious choice from first meeting. Having been burnt by previous stressful and frustrating building/renovation experiences, Steve and Brent allayed our fears and concerns by working closely with us from the start to ensure we could achieve our dream within budget. They even invited us into their private homes that they built themselves to inspect the finished product. During construction Steve and Brent updated us regularly and we did not have to worry about a thing - it was such a good feeling to know that we were in good hands. Even when we made minor changes on the fly, Steve and Brent were extremely accommodating! Their professionalism, attention to detail, knowledge, communication, friendliness and courtesy won us over and has us speaking their praises. We most appreciated their hands on approach (literally on site on the tools everyday!) and the fact that we knew what we were getting was exactly what we wanted. Thanks again Steve and Brent! We hope you'll still be building when we're ready to do our next one!
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