Home Extensions

A home extension is the perfect way to improve functionality, add space and increase value of your property. Capital Building Contractors have been building stunning Home Extensions across Melbourne for years. We understand the importance of creating spaces that are both functional and beautiful. 

Home extension costs differ from property to property. Typical costing is around $4000-$5000 per square metre. Additional costs should be expected for premium materials, fixtures and finishes. To find out how much your extension will cost, the best way is to get a quote.

With any home extension or building project, we take the time to understand your needs. From design, to permits, to building, we will be with you every step of the way. For a no-obligation appraisal, contact our friendly team

Why Do A Home Extension & What Are The Benefits?

Capital Building, a Melbourne home extension builder, we have many years of experience in designing and building aesthetically beautiful and efficiently functioning homes for our clients.  Whilst we adhere to our own strict Design Principle guidelines, our goal is to meet the needs of the homeowner. We ensure your building or home extension is in harmony with the rest of your home, is energy efficient and is built with only the best and most appropriate materials.

Building Extension Ideas

  • We can help with many different types of house extensions:

    • Single storey building extensions – kitchen/meals area, living rooms, extra bedrooms.
    • Second storey extension – a new living area, bedrooms, a study.
    • Addition of a sunroom, conservatory or pool house.
    • Over-structure extensions – an office, bedroom or extra room over a garage.

Capital Building takes a holistic approach to all its home renovation projects, from initial design, the renovation build and finally the hand-over of the home improvement. 

Benefits Of Home Extensions

There are many reasons why people choose to do home extensions:

  • Extra living space providing greater comfort especially for growing families
  • Additional room or rooms such as a pool room, study or library or an extension to a current room, for example, a kitchen
  • Less time and inconvenience than constructing a new home
  • Increasing the value of your home

Extension Specialists

Capital Building is a registered Master Builder and an experienced building designer.  We can advise you on which type of home extension is most suitable for your requirements.  We can help with the ideas on best room locations and orientations, what are common room sizes, what materials to use, details of structural specifications, financial implications and regulatory requirements and limitations.  We can minimise the complexity of the often complicated business of extending your residence.

Home Extension Costs

The cost of a home extension is dependent on what you are having done.  A double storey extension involving six rooms will cost significantly more than the addition of a small bedroom.  If you can be open about your budget, then we can give you the best advice.  If we know your budget, we can advise you early on as to whether your dream home extension can be met or whether it needs amending.

If you have any worries that by revealing your budget, you may not get the best deal, as a registered Master Builder, we will give you a competitive price that is commensurate with the high quality we deliver.  It is understood, and expected, that you will talk to a number of builders before making your decision. So let us help you figure out what your next step should be in building your dream building extension in Melbourne.  You can call us, request a call back or request a quote.

Weatherboard Extension Builds

Weatherboard extensions have always been a staple in Melbourne’s architectural scene. This trend is not just because of the city’s love for blending heritage with modernity but also for the style, flexibility, and cost effectiveness these extensions offer. Whether it’s a 20th century heritage home, or a contemporary abode, weatherboards fit seamlessly. Their ease of Installation and flexibility make them highly regarded among designers, builders, and owners alike. So, if you’re considering a home makeover, the blend of old and new that a weatherboard extension offers might be the refreshing touch your home needs.

Our Credentials

Building an extension or renovating is one of the biggest purchases in our lifetime. Therefore, it is essential that before going ahead with a project you can trust the building company that you choose.

Capital Building has an impressive list of credentials which means that should you choose it, you will be using a trusted, experienced, honest and safe building operator.

Registered Building Practitioner

Peter Harnischmacher and Travis Vinton, are ‘Registered Building Practitioners’ with the Victorian Building Authority.

Master Builder

Travis is currently a Master Builder member of  Master Builders Australia.

Green Living Master Builder

Capital Building is registered as a Green Living Master Builder Master Builders Association.

Victoria Building Authority

You can check Capital Building’s registration credentials by contacting the Victorian Building Authority. (Tip: search for ‘harnischmacher’ or 'vinton' under the Practitioner Name field)

Public Liability Insurance

Capital Building has Public Liability Insurance up to $5 million. For information about Public Liability Insurance see: Public Liability Insurance

Contract Works Insurance

Capital Building has Contract Works Insurance. For information about Contract Works Insurance see: CoverForce

Our Reviews

Craig C. ★★★★★ Travis, Kyle and the rest of the Capital Building Team demonstrated professionalism, honesty, punctuality, great communication and experience throughout every stage of our build. They were a pleasure to deal with and I would highly recommend.Response from the ownerHi Craig, Fantastic to hear from you! We are glad to hear everything is going well & you had a great experience with us. Thanks again, CBC Team suzanne L. ★★★★★ Our project with Capital Building was a demolition of the rear of the house, for a new two-story extension, followed by a reconfiguration and renovation of the existing part of the house. This project lasted almost 12 months and transformed our small and outdated house into a modern, spacious, and well-functioning home.Dean was our building designer, who played a pivotal role in the early stage. Although we had a rough idea of what we wanted to do in the beginning, Dean helped us to test our ideas to the practicality and guided us to alternatives that would work better and more economical to achieve. I see his advice extremely valuable because of not only his knowledge and expertise, but also his easy access to his building team for technical opinions.Dealing with Pierce was smooth and easy. He took care of the contract, responded to all our queries clearly and promptly, and made amendments to our satisfaction before contract signing.Next up is the building process. We were glad that we did not experience anything like a quiet and empty building site. We always had trades working consistently. The build quality was satisfactory. Even though I didn’t have a lot experience in building as this was my first major project, I did find their choice of building materials and selection of trades were in good quality.Travis was the director of the company but amazingly he was all over the details. We had many unexpected challenges throughout the build, however, he showed us a lot of passion and his can-do attitude was the most impressive. He made it happen to build a S-shaped handrail for our staircase while the stair company did not even want to touch it. He was a very good communicator and a great listener. I appreciated that he always put himself in our shoes in solving problems. Tom was our site supervisor. He too was a good communicator to keep us informed about the progress, to share his knowledge and to hear our concerns. Overall, I found Travis and Tom were very professional, responsive, and easy to talk to.There are a few other people I would like to mention: Carole, who helped selecting colours and bathrooms. We were so happy with the beautiful results; Tiffanie, who was over almost everything else on managing meetings, documentations, liaising with the team for any inquiries, and following up anything outstanding; and individual trades, from carpenters and tilers to plumbers and cleaners, who showed their care and respect.Conclusion: Capital Building is a mature and professional team that has great skills and customer services. I feel the people there being honest and considerate. I would highly recommend them and would certainly consider them again in the future.Response from the ownerHi Suzanne, thank you so much for taking the time to write such a nice and detailed review. You were a pleasure to work with and we really hope you are enjoying your new space. All the best, CBC Team. michael B. ★★★★★ I recently had capital building do a second story extension , I had no idea what i was getting myself into, my first point of contact was with Pierce, he assured me not worry the whole process was a breeze with Tom,Laura and Tiffany.and Travis and the crew Dylan,Jarrod and the rest of the boys did an exceptional job, it was all done and completed way ahead of schulude.The professionalism and workmanship was above and beyond ! I highly recommend Capital building,Response from the ownerThank you so much for your kind words, Michael. You were an absolute pleasure to work with and we are so happy you enjoyed your experience with us. We wish you all the very best and hope you enjoy your new space.Thanks again, CBC Team js_loader
A home extension involves adding additional space to your existing home, expanding its size and accommodating your changing needs without the need for moving.

Capital Building offer a variety of home extension options, including rear extensions, side extensions, loft conversions, basement conversions, and multi-story extensions, depending on your specific requirements and property layout.

The need for planning permission depends on factors such as the size and location of the property and the proposal, along with property covenants and overlays.. Our team will assess your project and advise you on the necessary permits and planning regulations.

The duration of a home extension project varies depending on its size and complexity. Typically, the planning and design phase takes 3-4 months, excluding town planning approval if that’s required. Depending on the scope of the project, construction might take 6 months for a smaller and simpler build and up to 9 months or more, for larger and more complex builds.

Yes, Capital Building offer design and build services to plan and visualise your home extension. Our team of designers can provide free, no obligation concept designs and budgets, which can be formalised into professional drawings by Architectural Draftspeople.

To get started, you can contact us to schedule an initial consultation. Our team will visit your property, assess your needs, discuss design ideas, provide an estimate, and guide you through the next steps.

Depending on the scope of the extension and the level of disruption, it may be possible to live in your home during the construction. However, there may be certain periods where temporary accommodation is recommended or required.

Typically, house extensions cost $3500-$4500 per square metre. This cost will change based on your build preferences. The most accurate way to find out how much your extension will cost is to get a free quote.

Google Rating
Based on 25 reviews