A third Sydney apartment block is under scrutiny after it was revealed some of its residents were evacuated from apartments considered "unsafe and unfit for occupation".
About 30 units at 19 Gadigal Avenue in Zetland, in Sydney's inner south, were evacuated by the building owners in late 2018, according to City of Sydney.
Council staff who inspected the building in February found part of the building vacant with extensive and severe water damage.
"The water protection system in the building has failed which has led to a lot of water getting into the building and caused structural damage, particularly damage to walls that separate the different apartments," City of Sydney's executive development manager Andrew Thomas told reporters on Wednesday.