These are the Melbourne buildings that experts say are "too dangerous" to occupy.

In some instances the problems are so severe residents have been forced to abandon their homes, in others hundreds of people continue to live in apartments that have serious health and fire concerns.

An infestation of black mould in one of the apartments.

While questions remain about the safety of the Lacrosse building in Docklands, where there was a serious fire in 2014, it has been revealed that mould, fungus and building collapse has left a six-year-old apartment complex in the south-eastern suburbs virtually uninhabitable.

About half the residents of the building have already moved out after units were declared uninhabitable because of mould growth, including fungus "mushrooms" sprouting from the carpet.