It is claimed that individuals were given housing by being wrongly described as a medical priority in cases during 2007.
City Manager John Tierney said if any member of staff is found to have acted inappropriately then they will be disciplined.
He said an initial investigation was delayed because of a grievance procedure and has become 'complicated and delayed by circumstances which it would be inappropriate to outline here'.
Mr Tierney said that an internal audit found six cases of misallocation were identified but only one was a misallocation as the other five would have been housed anyway based on their circumstances.
Another six cases were investigated but no one had actually been housed in these instances.
The Cty Mnager also said if any member of the public had acted unlawfully this will also be pursued.
Meanwhile, Dublin's historic Chapelizod has been declared an Architectural Conservation Area following agreement from city councillors this evening.
The order means that any new development will have to be sympathetic to the character of the area.
A similar order was also made in respect of Fitzwilliam Square.
Councillors also voted to make St Luke's Hospital in Rathgar a listed building, against the advice of city management.
Earlier, three Dublin City Council swimming pools were spared from imminent closure.
An official report found that the pools at Sean McDermot Street, Crumlin and Coolock might have to be closed because they will lose €1.1m this year.
They are also in poor condition with no money for refurbishment.
This evening's meeting of Dublin City councillors heard that the pools will not be closing in January while alternative funding is sought to keep them open for group hire.
