Our House Extension Process

Create Your Dream Home with Our Seamless House Extension Process

Create Your Dream Home with Our Seamless House Extension Process

For house extensions in Melbourne, you can’t go past Extensions Unlimited. We offer a streamlined and cost-effective end-to-end service, starting with your ideas and ending with a beautiful, seamless property renovation. We act as your guide throughout the house extension process, as how we do things is just as important to us as the end result. We’ve been conducting house extensions in Melbourne since 1994 and have become the top choice for renovations in the city’s suburbs. Continue reading to learn what our process involves.

Design Service

Design Service

The initial meeting with your professional home extension designer is at no charge. At this meeting you will have the opportunity to discuss your thoughts, ideas and requirements with our house extension expert.Drawing on their wealth of knowledge and experience with all types of home extensions they can make informed suggestions and give great advice and feedback regarding viability and indicative costs of the house extension being discussed before you consider moving forward with more formal designs and costings.

The creativity and attention to detail that our designers display in their work will have you delighted. All their ideas are based on what you want out of your house extension. We want to ensure that you love your new extension and get the most functionality as possible out of it. This means we might suggest a tweak here or there to maximise the features of your home, or to allow better movement and liveability throughout the space. But we will always listen to you fully before making our own comments.

Working Drawings

Working Drawings

Extensions Unlimited employs specialist registered practitioners to produce your plans. These working drawings are what the builder will use to accurately construct your extension. Again, in this case our end-to-end service saves you time and hassle as we already have trusted specialists at hand for this purpose.

Permits and Engineering

Permits and Engineering

At this planning stage, we organise compliance for all building regulations from your council. They will require building permits, as well as a host of reports including soil reports and bushfire reports, amongst others. We’ll get approval for your renovation by directly negotiating with the council on your behalf. We’ll also take care of any fees necessary to meet all council requirements. All this is fully covered in the fixed price for your renovation.



Our assurances have been put into place in alignment with our ethos of best building practice. When you work with Extensions Unlimited, you know that only HIC6 Master Builder Home Improvement contracts are used. You can rest assured that your project will have a single fixed price and a clear start and completion date. You will be protected by all the necessary insurance, and in addition, you will be issued with a warranty insurance certificate on completion of the project.



Extensions Unlimited provides a three stage contract approach to give you peace of mind.

Stage 1 is the Design Development stage which is designed to develop your design, specifications and costing.

Stage 2 is the Preliminary Works Agreement to establish all the requirement needed, by law, prior to contract which include such things as soil reports,engineering,energy report & council/planing feedback.

Stage 3 is the final contract, which you sign if you decide that you are happy to continue after the Preliminary Works have been carried out.



You will be excited to see your new house extension gradually come to life in the construction stage. We pride ourselves on providing our clients with excellent service and high-quality house extensions in Melbourne. We have proven house extension process that we have developed since 1994. By doing things according to best practices in every possible way, we ensure that we are proud of our work, and so are our clients!

To achieve this outcome, we ensure all our tradespeople are fully trained and have completed an occupational health and safety course. All our constructions are regularly inspected by independent surveyors who issue reports during the progress of the works, as well as a final certificate upon completion.

All our electricians and plumbers are fully certified and licensed to ensure the highest calibre work. Our company project managers are qualified professionals who are always available for you if you have questions. Any required scaffolding will be erected by qualified riggers to ensure safety for you and your family. Company tarpaulins are also used to protect your home and the new addition.


We would like to express our gratitude to you & your team for your recently completed Project of a second storey addition to our existing weatherboard home. From our first meeting with the Designer, we were confident in his enthusiasm for the business & his passion to design an extension...

Steve & Sophie – Ringwood Nth

It was a great experience and was handled with great care. It could have been a stressful time with a toddler, newborn, two dogs & a home extension. But it was really good & we really love our new space and home.

Ryan & Lisa – Viewbank

We purchased in an area we loved & that was a major factor in making the decision to extend...we loved the idea of being able to create something that suited our needs.

Alex & Sam – Knoxfield

Right from the first phone call we found the whole team at Extensions Unlimited to be very attentive and professional. The Design Consultant listened to our requests, and came up with a design that suited our needs and existing construction. Once the work commenced, we had fairly tight deadlines due...

Brenda – Glen Waverley

Our initial contact with the company was great. The Design Consultant met us for our first appointment and listened to our ideas and came up with a design which was exactly what we were looking for. The process was very easy and construction started after only a few months of...

Michael & Natalie – Nunawading

Very happy with our upstairs extension. The company stood out from the very beginning in terms of customer service as well as promptness and clarity of communication.Our project was finished on time and within budget. Have to especially acknowledge our Project Manager and our Designer. Our Designer was very patient...

Harish – Essendon

We opted for Extensions Unlimited purely based on our experience with our Designer. We were impressed by his professionalism & conscientiousness in finding the best design for our needs. Moreover, we felt he was someone we could trust. In fact, all Extensions Unlimited staff members were professional & friendly, so...

Stephen & Kim – Glen Waverley

Excellent Project Management! Communication was always clear, precise, timely & trustworthy. The whole extension / renovation process was well handled and we enjoyed the journey.

Huei & Chin-Wei – Mount Waverley


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