100 Mount Street is a Premium-grade office tower in the heart of North Sydney, delivering a workplace experience defined by architectural excellence, connectivity and amenity. Designed by Architectus in association with SOM (Chicago) and completed in 2019, the 35-level tower comprises approximately 42,000 square metres of premium office accommodation, surrounded by an evolving mix of retail, dining and lifestyle amenity and moments from the Sydney CBD. Defined by its distinctive cross-braced façade and elegant glass-enclosed form, 100 Mount Street has become a prominent addition to the North Sydney skyline, capturing expansive views across Sydney Harbour and the CBD. The building has been thoughtfully designed to support contemporary ways of working, with expansive and efficient floorplates, light-filled interiors and high-performance building systems that enhance occupant comfort, transparency and natural light throughout the tower.

At ground level, the building integrates a welcoming commercial lobby, café and retail offering with landscaped public spaces and pedestrian connections, creating an activated arrival experience and strong connection to the surrounding precinct. Positioned at the intersection of Mount, Walker and Spring Streets, 100 Mount Street benefits from exceptional connectivity, with direct access to rail, metro, bus and ferry networks and seamless access to both North Sydney and the Sydney CBD. An exemplar of sustainable workplace design, 100 Mount Street has achieved 5 Star Green Star certification together with WELL Core and Shell Gold Pre-certification, reflecting its focus on environmental performance, occupant wellbeing and long- term workplace quality.