The $795,000 Gold Coast apartment that Health Minister Sussan Ley bought on a taxpayer-funded trip was purchased from a large Liberal Party donor who knew her "in a professional capacity".

Ms Ley and her partner charged taxpayers $3949 for flights during the two-day trip to Queensland in May 2015 during which Ms Ley made an announcement about the Pharmaceutical Benefits Scheme in Brisbane.

Ms Ley claims that, in the same trip, she met health stakeholders on the Gold Coast but also made an unexpected purchase of an apartment on Main Beach Parade with a view of the ocean.

Property records show Sussan Penelope Ley bought the home from Martin Henry Corkery, a Queensland man who donated $50,000 to the Queensland Liberal National Party in 2011.