Add Granny Flats

Add Granny Flats was first introduced to the market in 2015 when Add Business Group completed the acquisition of Concept Steel Construction (CSC), a company that has been building granny flats in Perth since 2001.

As part of the Add Business Group, Add Granny Flats has access to some of Perth’s finest tradesmen, all in-house, who are dedicated to ensuring we provide a superbly finished granny flat with a remarkable level of support throughout the entire granny flat design, planning, approval and build process.

When you build with Add Granny Flats, your build price is fixed, no “added costs”. Within the price, there are standard inclusions with options to upgrade if you like and you also have the option of using steel or timber frame for your project.

For the more energy and Eco conscious, we have Ecoedge Granny Flats. Eco Edge uses a unique method of construction using structural foam panels. These environmentally friendly and economically sustainable materials will reduce your carbon footprint and save you money on energy bills now, and for many years to come.

Building a granny flat is an exciting journey and we understand our clients need a builder who is honest and transparent throughout the entire process. Our team never rests on its laurels, we are always seeking to make the granny flat build experience better, providing our clients with a more enjoyable and positive building experience from start to finish.

Our growing success in this industry is testament that quality, style and value remains the number one priority for all our clients, no matter what their budget.

Why choose us?

If you would like to speak to one of our design consultants about your project, please give us a call on 9493 8200 or email us at