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GJK Building Group is owned and managed by registered builder, Gavin Kahn. Based in Melbourne, GJK Building Group specialises in high quality residential projects, including new homes, extensions and renovations, two storey extensions, as well as small projects, such as pergolas, alfresco/entertaining areas, decks, garages and carports.


Gavin is an accredited Green Living Builder. He can help you design an energy-efficient and sustainable low impact home providing you with maximum living comfort, while creating a low impact on our environment. His design scope spans classic, traditional and contemporary designs, which are individually modified to suit clients’ needs.


A distinct advantage of working with GJK Building Group is that you will be dealing with Gavin directly, he will be on site and committed to all projects, ensuring excellent communication and quality craftsmanship in every aspect of your building project. He will ensure that the smallest details are attended to resulting in a beautiful, timeless and functional home.