Core Insights - The sale of a luxury home in Longueville, Sydney, by former investment banker Bruce MacDiarmid and his wife Elizabeth for AUD 25 million sets a new record for the area [1][3] - The buyer, Sandy Chen Yi Fei, is the sister of Owen Chen, a fund manager and lender, and this transaction surpasses her previous record purchase of AUD 23.5 million in 2023 [1][3] - The Chen family now owns nearly 10 properties in Longueville and Northwood, with a total investment exceeding AUD 110 million [1] Property Details - The MacDiarmid couple purchased the five-bedroom residence in March 2009 for AUD 4 million [3] - The property is located on Molesworth Lane and was sold through McGrath real estate, with no comments from the agent [3] Market Trends - The MacDiarmid couple plans to relocate to Darling Point in Sydney's eastern suburbs, with assistance from real estate agent Sam Green [5] - Another luxury property in Longueville is expected to hit the market soon, potentially breaking the record again, featuring over 47,000 square feet, nine bedrooms, and various amenities [5] - The North Shore area, particularly Longueville, is anticipated to experience significant growth due to its proximity to the city and strong market performance in the past quarter [7]