Jul 13, 2026 – 10.40amA three-level Gold Coast waterfront mansion has hit the market in the gated community Sanctuary Cove with a price guide of $35 million, which would make it Queensland’s most expensive house if that is achieved.The luxe listing is the estate of the late owners, Wendy Zupp and her husband, Eric (John), the Queensland car dealer and property developer known for his “Big John” Zupp and “Any Old Iron” advertising.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles