The tower contains 83,000 square metres (890,000 sq ft) of rentable space. The floor-to-ceiling height is unusually large for a skyscraper at 2.77 metres (9 ft 1 in). The 30 metres (98 ft) lifts can reach speeds of 7 metres per second (23 ft/s). There are 414 underground car park spaces. The building contains double glazed windows with surface coated tempered glass to increase thermal efficiency. The CRA Building was demolished for the construction of this building.
The owners of 101 Collins have had a long term policy of buying up surrounding properties in order to protect their views, especially to the south, with an unintended consequence being that older buildings in Flinders Lane now house hip restaurants and bars.