Consumers in Victoria have launched an unprecedented action against the state’s building regulator, whom they accuse of failing to protect home owners from poor building work, media reports.

The Age has reported that 36 victims of a poorly constructed townhouse development in Melbourne’s outer eastern suburb of Diamond Creek are launching legal action over a saga involving dozens of townhouses in the Rangeview Estate, whereby residents have experienced problems such as mould, inadequate fire separation, defects in roofing…