Homebuyers are at risk of losing deposits worth tens of thousand of euro.
It's due to an unexpected clause in the Central Bank new loan measures.
According to the Irish Independent, the new rules mean a property valuation needed to get a mortgage must not be more than two months old.
However most home deals take at least three months to complete, forcing buyers to pay for a second valuation.
And if the value of the property falls during that time, the banks can't pay out the full cost of the loan.
The anomaly has gone under the radar since the regulations were introduced in February.
It comes as house prices being to fall in some part of Dublin, the first signs of which are in Lucan.
