181 William Street is an architecturally significant 27 storey building. Like 550 Bourke Street, the site's second building. 181 William Street is an A-grade building with premium services designed in accordance with high ESD standards. Many of the environmentally sustainable features are a first in Victoria for a building of this type and include an energy efficient facade, 'destination' lifts, a percentage of 'small car' car parks and a black water treatment plant.
181 William Street a 54,000 sqm office building, has been designed to be a prominent corner building, distinguished by the curtain wall facade of the tower which has a striking russet colour pallet and geometric spandrel glass pattern.
The two buildings (181 William and 550 Bourke) are separated by the revitalised Goldsbrough Lane, one of the development's multiple laneways, which leads into an open 'plaza', creating a retail environment that embodies the best of Melbourne's heritage and character.
Goldsbrough Lane accommodates and services the needs of some 5,000 employees who occupy the two buildings, city workers in the surrounding office and court buildings, and visitors to the precinct.