John Duncan

We help business owners prepare for their next chapter: retirement.

Our team specialises in helping business owners prepare for and navigate the transition into retirement or their next chapter through the successful sale of their business and freehold, with 100% confidentiality. For most, this is a once-in-a-lifetime event, and it’s far more than a transaction – it’s about preserving your legacy, securing your financial future, and making sure the business you have built continues to thrive for your employees, clients and community.

Our dedicated team has sold over $15,000,000+ in business and freehold in 2025, with continued referral work from our client’s trust and results.

What do I bring to the table?

With over a decade of experience in commercial and real estate valuations across South-East Queensland and the tech capital of the world – San Francisco, I understand real estate and transactional value with multiple notable individual deals valued in excess of $150 million USD and an individual 70+ commercial property real estate portfolio valued in excess of $450 million USD in 30 days.

With this experience, I understand the depths and necessity of cash flows and real estate components that are involved in business and real estate transactions. Most importantly, I understand the requirement of respect, integrity, honesty and providing a professional, prudent and efficient service when dealing with people’s largest assets that ultimately affect their own and family’s livelihoods.

Our team will help you prepare for and navigate the transition into retirement or your next chapter through the successful sale of your business and freehold.

For a free consultation and appraisal – please contact me directly – 0400 388 587 – john@gsbb.com.au