Three near-new houses in Hobart's northern suburbs will be demolished, after an investigation deemed they were not built to code and were unsafe to live in.
In 2021, 22 properties at the McGill Rise housing development in Claremont were evacuated after an audit of construction work and independent engineering advice found the homes were 'uninhabitable'.
ABC News spoke to a McGill Rise resident at the time, who said she'd had water damage and fungus growing inside her property.
Two years later, three properties have been served with demolition notices.
Glenorchy City Council Mayor Bec Thomas said the council has tried to engage with the owners to have rectification works carried out, but that had not occurred.
"Council now has no option but to have the buildings demolished to prevent them collapsing and potentially injuring someone or damaging other property," she said.
The three properties have not been lived in since 2021.
Mayor Thomas said investigations into the houses had found they were constructed on unusable platforms, making them structurally unsound.
"Unfortunately, the private building surveyor used by the developer signed off on the construction and those certificates were provided to council. However, the fact is that the platform the houses were built on should not have been certified."
Mayor Thomas said her and her council's sympathies were with the residents.
"The owners, previous tenants who had to be evacuated, nearby residents - it is a situation that could have been avoided had the proper private building surveyor checks occurred in the first place."
A spokesperson for Tasmania's Consumer, Building and Occupational Services said while the McGill Rise situation was ultimately the responsibility of the Glenorchy Council, the state government had introduced protections for consumers in recent years to avoid scenarios like that happening in future.
"This includes progressing the Residential Building (Miscellaneous Consumer Protection Amendments) Bill 2022 through the parliament.
"The Bill focuses on addressing defective work, increasing accountability of statutory office holders such as the Glenorchy City Council as permit authority, and providing for timely and cheaper resolution of residential building disputes when they arise by providing jurisdiction for such disputes to the recently established Tasmanian Civil and Administrative Tribunal."
"The Bill also provides the Tasmanian Government with additional powers to order a council as permit authority to take certain action to protect public health or safety, if the council has failed to do so."
A spokesperson for CBOS also said that disciplinary proceedings against the building service providers who worked on the site were also underway.
"In circumstances with severely non-compliant work, as identified at the McGill Rise subdivision, the first priority for regulatory bodies under the Tasmanian building regulatory framework is to ensure safety of life for owners, occupants and users of adjacent land."
"Given this matter is ongoing, it is not appropriate to comment further."
Mayor Thomas said five other properties on the site had been deemed unsafe, but they did not pose the same risk as the three scheduled for demolition.
The owners have 90 days to comply with the demolition order.