Dublin City Council is to investigate claims that housing units remain idle at Fr Scully House which was at the centre of a row over rent levels.
Last year the Department of the Environment had threatened to take legal action against the Catholic Housing Aid Society the owners of the complex for senior citizens.
The Department had provided the society with €17m in funding to build the facility for 99 residents.
Dublin City Council refused to pay the rents CHAS was trying to charge and most of the units remained empty for seven months.
In the end CHAS agreed to reduce rents from €580 a month to the social housing standard of €400.
However, Independent Councillor Christy Burke told a meeting of Dublin City Council that at least four double units remain empty because CHAS is looking for rents of €900 a month from private tenants.
Councillors agreed to pass a final part of the leasing agreement on condition that Assistant Chief Executive for Planning report back on these claims.
The final agreement concerns permission for CHAS to sublet three retail units built as part of the complex on Middle Gardiner St.
The society pays the city council a €33 a year in rent reduced from €220,000 a year.
A condition of the reduced rent is that the premises is used for senior citizen accommodation.
