There have been around 20,000 offers of accommodation for refugees coming to Ireland from Ukraine.
However it has since been revealed that about less than half of those are likely to be deemed as unsuitable accommodation.
Liam O'Dwyer from the Irish Red Cross told Lunchtime Live there are several reasons for this.
"The word 'unsuitable' is probably not the right word, because I don't think that's the meaning of it.
"When people make a pledge - we would have experienced this before when we began the pledges database for the Syrian refugees... what happens is people immediately say 'Yeah, this is something we'd really like to do'.
"And when we get to call people... what happens then is that people have had time to reflect themselves.
"And they say 'Actually we've thought about it now, and no we're not going to go ahead'.
"And then others, just the phone isn't answered - and we can't move ahead unless there is an actual response from the person.
"We also need further details because many people, when they go on to the pledge database, they don't give the full details".
Vacant properties 'a category unto themselves'
Liam says inspections of the properties on offer can also throw up hurdles.
"They're simply looking for accommodation that's adequate, really.
"The areas they're looking at would be health and safety in particular.
"And then there's issues like houses that - the electricity - nobody's been in for a long time, so there's quite a bit of work to be done to get the house back in order [sic]".
And he says it really is a mix of issues.
"It is a mix of properties and a mix of issues that the reviewer can identify.
"Or sometimes we identify these on the phone, and we're able on the phone to say 'OK, we can see this isn't going to work'.
"Standalone vacant properties are a category unto themselves, and they often will need a bit of work.
"And that's fine, we can cope with quite a bit of that - but when it comes to the shared pledge that's different.
"You're going into somebody's home, a home is being shared with people.
"The telephone call there is regarding the people going into the home - if children are going to go into the home then Garda vetting is an issue."