High-quality home extensions and renovations

Barnett Building specialise in high quality home extensions and renovations. As second-generation builders, we've grown up in the industry and bring over 25 years of hands-on experience in residential construction.

We focus on extensions, additions and renovations across Sydney’s North Shore and Northern suburbs, prioritising craftmanship and client satisfaction over high-volume work. We work with a trusted team of skilled tradespeople and suppliers who have partnered with us for many years, ensuring consistently high standards and reliable results. 

Our service is tailored to each client's needs. You may come to us with architectural plans ready to proceed, or if you're still in the early stages, we can help develop your ideas, offer practical advice, and guide you through the process from concept to construction. 

Your home is your castle. We treat it with the care and respect it deserves.