One charity working with Ukrainian refugees claims the State is 'sitting on' several thousand units of pledged accommodation.
It comes as over 200 people fleeing the invasion are staying in an old terminal building at Dublin Airport.
It is expected 3,100 refugees will be placed in vacant homes, while a military camp in Gormanston, Co Meath will open to new arrivals from next week.
Tom McEnaney is founder of IODP - an Irish organisation brining Ukrainians to Ireland.
He told The Hard Shoulder people who arrived here on Wednesday had nowhere to go.
"Yesterday... we had two groups, one from each region, arrive in.
"[They were] on two different flights, each with 26 seats on each flight - so 56 people in total.
"They arrived and they were told 'Sorry Ireland is full, Citywest is full' and you need to sleep here on the floor of the offices in the old terminal.
"They were given minimal water, no food and no sleeping bags, no mats."
But he says it's not down to a shortage of accomodation.
"It's not a shortage of accommodation, it's an administrative problem.
"It's a logistical problem - the State has been sitting on several thousand units of pledged accommodation.
"Irish people who want to help, who are desperate to help, who have space in their homes and who have invited Ukrainians in.
"And yet, bar a tiny, tiny handful of that pledged accommodation... almost none of it has been taken up.
"The Government, the department has been sitting on this list since March."
Mr McEnaney says his organisation reached out to officials six weeks ago to offer to help supply accommodation.
"We didn't even get a response", he adds.
And he believes the main reason for the shortage is down to "pure incompetence".
"I wish there were a more complicated explanation for it.
"But I just don't think that the Government, and the agents of the Government, are capable of - what to some would be - a minor logistical challenge of placing Ukrainian refugees in accommodation with Irish people".