The Ombudsman for Children has called for an increase in support for children experiencing homelessness.
Dr Niall Muldoon is before the Oireachtas Committee on Housing, Planning, and Local Government.
According to the latest figures, almost 4,000 children are living in emergency accommodation.
In his opening statement, Dr Muldoon called for an increase in child support workers and family support services for families experiencing homelessness.
Yesterday, homeless charity Focus Ireland, told an Oireachtas committee that 91% of the children on its case load are waiting for a child support worker.
Dr Muldoon told the committee that there is no clear policy objective for the use of homeless hubs.
He discussed findings in a report, published in April, which outlined issues raised by children living in hubs.
The Ombudsman said that existing legislation needs to be amended to make children experiencing homelessness visible.
He also said a system for an independent inspection of homelessness services must be put in place.