The ACT Government has expressed concern that Mr Fluffy homeowners have been approached by a firm offering property valuations.
Mr Fluffy homeowners themselves have questioned whether the list of Mr Fluffy addresses has been accessed by a commercial party after receiving direct mail offers this week from Northbourne Valuers.
The company is offering to assess the "fair market value" of Mr Fluffy homes for $330.
The Government's Asbestos Response Taskforce has expressed concern and wrote to homeowners on Tuesday night warning them that such a valuation may not even be accepted by the government if a decision were made to buy back and demolish properties.
"The Taskforce has been made aware of a suspected targeted mail out to homeowners of affected properties from a valuation firm. This mail out is in no way endorsed by the Taskforce or ACT Government," the Taskforce said.
"The Taskforce has not publicly released a list of affected properties and we are disappointed that this mail out has created distress for some families."
On the Friends of Fluffy Owners and Residents' Action Group Facebook page, several residents who received the letter expressed concern that their privacy had been breached and they were being targeted in a predatory manner.
Others suggested it was important for homeowners to have a valuation as a baseline prior to any decision ACT Government and Commonwealth decision on a potential buy-back and demolition scheme.
Some valuation companies have knocked back Mr Fluffy homes based on safety concerns.
Northbourne Valuer Tigran Amiyants said he offered professional valuations for Mr Fluffy homes but denied he had access to a list of affected homes.
Instead, he said his mailout had been "a random sample" of 3000 ACT households which included "some Mr Fluffy homes referred from clients and friends".
The Fluffy Owners and Residents' Action Group convener Brianna Heseltine said there was a high degree of emotional strain among group members who were awaiting a decision from the ACT and Commonwealth Governments.
She said they did not want their personal details in the public domain and did not want to be targeted by unsolicited commercial operations which would profit from the Mr Fluffy situation.
The group has vehemently opposed any moves which may allow the list of affected homes to become publicly available – a sentiment agreed to by the Taskforce.
The Taskforce, in an earlier email advisory to residents said "No list of properties has been released publicly or to the media by the Taskforce. The Taskforce and the ACT Government continue to respect residents' requests for privacy. That is why we are introducing measures such as tagging of properties – to inform those who need to know without the need to issue a list."
It acknowledged there were rumours that a list had been circulating in pockets of the community but had no evidence of who was circulating it or who was receiving it if that were indeed the case.