A 55-storey skyscraper and a hotel have been added to growing list of Melbourne buildings installed with flammable cladding.

Late on Friday afternoon the state's building regulator announced another seven buildings with non-compliant cladding were recently identified as part of their ongoing building audit.

The MY80 tower on the corner of Elizabeth and A’Beckett streets has been installed with non-compliant cladding. Credit:James Boddington

That process was launched after a near-catastrophic fire at the Lacrosse Building in Docklands was found to have been fuelled by combustible material on the tower's facade.

The audit has already netted other 15 buildings with non-compliant cladding, including the Royal Women's Hospital, which has been placed on a heightened fire response due to fears its cladding could fuel an unusually ferocious blaze.