
In a landmark move reshaping Sydney’s North Shore, private equity real estate firm Conquest has acquired the Quadrangle Shopping Centre in Castlecrag for $68.8 million, announcing today a visionary $250 million redevelopment that will see the site reborn as Queensbridge, a vibrant lifestyle and retail precinct.
Queensbridge, will reimagine the tired village into a modern retail dining and lifestyle hub, paired with a collection of luxury residences above to be called,100 Edinburgh.
The project is one of the most intriguing urban renewal stories in recent memory, not just for its scale, but for the legacy it builds upon.
The site was owned by the founder of Greencliff, Dr Stanley Quek, a medical doctor turned property developer and philanthropist, widely respected for his deep-rooted connection to Castlecrag and commitment to architectural integrity. Dr Quek’s decision to sell the Quadrangle Shopping Centre wasn’t just transactional, it was personal.
Greencliff acquired the 5,200 sqm Castlecrag site in 2016. Following extensive community consultation, development approval was granted in December last year. The approved redevelopment will replace the existing shopping centre with a new supermarket, premium retail offerings, and a collection of high-end apartments. This redevelopment will bring much-needed renewal to the area while maintaining the village character Castlecrag is known for.
“By Wednesday we were introduced to the deal to buy the site, on Thursday it passed our investment committee and by Friday, we shook hands with Dr Quek and secured it unconditionally,” said Michael Akkawi, CEO of Conquest.
“For Conquest this acquisition is a generational investment that will redefine Sydney’s north shore for decades to come with a promise to uphold and enhance what Dr Quek envisioned for this land,” added Akkawi.
Set in one of Sydney’s most architecturally significant suburbs Castlecrag is known for its deep respect for nature and community. Conquest’s plans aim to preserve that spirit while ushering in a new era of design and sophistication for future living.
The mixed-use redevelopment will be a contemporary retail and dining destination attracting premium food and beverage operators, wellness brands, and boutique retail. “100 Edinburgh” will comprise architecturally opulent residences that promise “glamour, greenery, and grace.”
Construction is expected to commence in the coming weeks with an on-site experience centre opening soon to the public.
In a property market increasingly driven by short-term wins and rapid turnovers, Conquest’s bold move in Castlecrag stands out for its long-game philosophy a rare blend of patience, place-making, and vision.

