A family has been forced to flee their Canberra home after potentially deadly asbestos fibres were found in children's clothes and toys.

The house in the unnamed Canberra suburb had previously been cleaned of Mr Fluffy asbestos fibres and then twice declared safe by two independent assessors.

But fibres were recently found in a wardrobe and Work Safe ACT shut down the home with a prohibition notice.

A company called Mr Fluffy, operating in Canberra between 1968 and 1978, installed the loose fill asbestos in hundreds of homes.

Work Safety Commissioner Mark McCabe says sometimes removal notices can be misleading.

"Unfortunately people have just looked at the title of those sheets which say "clearance certificate" and they've made an assumption about that," he said.

Mr McCabe says the family had to leave the house quickly, with very few possessions.

"They were able to take some clothes from the house," he said.

"The prohibition notice said that the residents have to leave the house until the house can be cleaned and no work can be done on the house removing the fibres except with WorkSafe permission.

"It appears the asbestos has come down from the ceiling through a gap at the back of the wardrobe."

Mr McCabe says the family did all the right checks, and he has referred the two assessors to the ACT Planning and Land Authority for investigation.

"They will need to investigate whether there is an issue there," he said.

"I've got some concerns from what I've seen, but only a full investigation can determine what really were the circumstances in which those reports were done, if they were inadequate, and if so, why?"

Environment Minister Simon Corbell says the Constructions Occupations Registrar is investigating the issue.

"We'll need to ascertain what nature of inspection was requested by the home owner on two previous occasions," he said.

Mr Corbell has also defended the general quality of assessors.

"The Government keeps this issue under constant review," he said.

"The ACT has one of the highest levels of asbestos awareness training and accreditation of any jurisdiction in Australia.

"We are continually reviewing that given the particular circumstances we face in relation to the loose fill, Mr Fluffy, asbestos homes."

But Mr Corbell says the Government is preparing to announce some changes.

"The Government will consider further options in the coming weeks to further strengthen and improve the level of information available to householders as well as options to potentially assist householders with managing some of these issues," he said.

Mr McCabe says assessment problems are rare.

The home is one of around 12 homes, out of more than 1,000 homes cleaned of Mr Fluffy asbestos, where fibres have since been found.

Earlier this week Canberra resident Brianna Heseltine founded an action group for Mr Fluffy home owners in order to lobby for Government help.

"Already I've spoken to and had emails from more than 100 families," she said.

Ms Heseltine has appealed to the ACT Government to provide short term accommodation assistance to affected families.

"When you're in that period of crisis, I think if the Government could come up with some sort of fund to provide immediate assistance to people, it would be of great help," she said.

"I can say that in my own experience, it did indeed feel like a crisis when I was asked to leave my home."