In October 2019, Brookfield announced that a $400 million renovation would commence in late 2020 after the remaining tenants' leases expired. The building would be renamed 660 Fifth Avenue. Kohn Pedersen Fox planned to remove many of the building's interior columns, add double-high ceilings, add four exterior terraces, and replace the building's aluminum cladding with floor-to-ceiling windows.
In October 2019, Brookfield announced plans for a $400 million renovation scheduled to start in late 2020. The building would be renamed 660 Fifth Avenue as part of the overhaul. Kohn Pedersen Fox aimed to strip away interior columns, install high ceilings, add outdoor decks, and replace aluminum siding with large windows.