Two more families are becoming homeless every day because of the Government's failure to agree measures to ease the rental crisis, according to Focus Ireland.
The group has repeated its calls for immediate measures to offer "rent certainty" for tenants.
They are also asking the Government to increase rent supplement payments, which the Government previously ruled out, because it might increase rent for everyone else.
Head of advocacy Mike Allen said there is nothing to back up that claim.
He said: "There's absolutely not a shred of evidence for that assertion, and on the basis of that evidenceless assertion they have driven hundreds of families and individuals into homelessness.
"If there ever was a case for it, it's gone now the rents are so far above the rent supplement levels.
"If they introduce the rent certainty, even the pretence of an argument they have got would be gone."