Donald Sinclair
Business Broker

Donald Sinclair is a Brisbane-based Business Broker specialising in trade services, construction supply, plumbing, bathroom retail, cabinet making, and owner-operated businesses across South East Queensland.

With more than 23 years’ experience owning and operating a successful plumbing fixtures and bathroom supply business in Brisbane, Donald brings genuine hands-on business ownership experience to every sale. Having built, systemised, and successfully sold his own business, he understands the challenges and opportunities business owners face when preparing for sale.

Donald works closely with owners of trade and operational businesses to help maximise value, improve buyer appeal, and achieve smooth business transitions. His experience includes plumbing businesses, bathroom and kitchen suppliers, cabinet making and joinery businesses, trade suppliers, service businesses, home improvement companies, and small to medium-sized owner-operated businesses.

A key strength Donald brings is his operational and systems knowledge. As a certified Systemologist, he helps business owners identify operational risks, reduce owner reliance, strengthen systems, and improve business transferability before going to market. His practical approach helps increase buyer confidence and positions businesses more effectively for sale.

Donald understands that buyers are looking beyond revenue — they want stability, systems, opportunity, and a business that can operate successfully into the future. His operational background allows him to identify areas that may impact valuation, due diligence, or the overall sale process early on.

Before joining LINK Business Brokers, Donald built strong relationships throughout Brisbane’s building and renovation industries, working closely with builders, cabinet makers, plumbers, architects, and trade professionals for more than two decades. His extensive industry network and local market knowledge provide valuable insight for both buyers and sellers.

Known for his approachable nature and clear communication style, Donald works closely with vendors, buyers, accountants, solicitors, and financiers to help transactions progress smoothly from appraisal through to settlement.

Donald is passionate about helping business owners realise the value they have built through years of hard work and guiding them through one of the most important financial decisions they will make.