Super plan for former Age site

Industry Superannuation Property Trust has submitted plans for Melbourne's biggest residential development six skyscrapers between 39 and 63 storeys rising between 142 metres and 222 metres in height.

The project, on The Age's former site in Spencer Street, is opposite another enormous urban renewal precinct, the 2600-apartment Upper West Side complex in Lonsdale Street.

Of the six proposed, the tower on the corner of Spencer and Lonsdale will be the largest.

Existing buildings that cover two-thirds of a city block between Little Lonsdale and Lonsdale streets will be demolished.

The size of the master plans lodged two days before Christmas mean they will need to be signed off by Planning Minister Matthew Guy rather than Melbourne City Council.

The trust's objective was to rejuvenate the "West End" by opening up "six development parcels" on the 1.7-hectare site, planning documents said.

"In terms of CBD redevelopment, the scale of the site is immense," they said.

As a result the super fund will consider parcelling up portions for others to develop.