There are 621 ghost estates across Ireland now, a legacy of those hopeful years. One in five Irish homes is unoccupied.
If the country immediately used them to house every person on the social housing list, there would still be hundreds of thousands left over.
"Everyone took the property drug at the same time", he says, "everyone was up at the same time, everyone was buzzing.
"Now we are all in the middle of this huge comedown. And people are looking around and saying - 'what happened? Was that us?' And then we look at our bank statements and we realise - 'yes, it was'".