Extensions and Renovations

Services in Brisbane & Gold Coast

Unsure where to start with your home extension design, home renovation design or new home design?

Renovating or extending your home is one of the most important investments for you as a homeowner. It’s a chance to prepare your home to match your changed circumstances whether it is upgrading or downsizing. That’s why it’s so important to get prepared, collect ideas and talk to an expert.

Our dedicated and experienced team of building designers offer their expertise and creative skills to turn your home improvement dreams into reality.

Koscad offers the following benefits for your next Renovation project:

  • Design and plans for all types of renovations and additions to you home or office including 

- Decks or Patios

- Carports

- House additions

- Raised and build in under

- Office and commercial renovations 


  • Expert advise on council regulations, building methods, design solutions
  • Ensuring your existing building is fully utilized and the additions you propose are optimized and integrate with the existing structure

You can check a sample council drawing of an Extension project here

Get prepared

Be inspired

Book a consultation


KosCAD Co.

47. Reuben St. Cornubia 4130

07 3806 0800


Kelie Savage Camp Hill
We are very happy with the work Otto has done for us in the design for townhouses. He is very easy to deal with, open to our suggestions and very happy to listen to our requests and explain why he...

Planning your new home`s building design, renovating or extending your house is not just challenging, but also brings up a lot of questions about regulations, permits, town planning. Have a browse through our topics or type your question topic in the Search box and see what you find. If you can`t find the answer for you question, click on the orange button.

Questions & answers

What are the advantages and disadvantages of steel and timber frame?

There are many misconceptions about choosing steel or timber structure, such as steel structures are noisier than timber. However, with the refinement of the newer steel structures, there is a less noticeable difference.

Advantages of building with timber.

Slightly less expensive then steel frame Easier to work with Easier to fix errors on site Can be treated for termites. Timber has better a thermal transfer rate when comparing a house using similar building insulation (timber frame will keep your home cooler) Easy to install hooks and brackets off walls in the future

Advantages of building with Steel.

Termite resistance (keep in mind that using steel structure does not protect 100% of your home. Proper termite protection system should still be used to protect other items in your home (timber flooring, cabinetry, etc.) More accurate

It is also important to note that timber is a more environmentally friendly solution as the...

Read all topics