Today is regarded by many as one of the unluckiest days of the year - and it seems the superstition is taking its toll on the property market.
New research from Daft.ie shows that property sales drop by as much as 10% when the 13th falls on Friday - usually the busiest day of the week for transactions.
For the more market-savvy among us however, Ireland's rampant triskaidekaphobia - fear of the number 13 - could lead to some serious savings.
The research shows that door number 13 is typically €4,335 cheaper than the average property – currently at €241,000
Trinity economist Ronan Lyons – who authored the report – said nearly one-in-five of us would baulk at the prospect of living at number 13.
“We often think of housing markets as being simply about cold laws of supply and demand,” he said.
“But while these are the top-level forces at work, there are lots of quirks of human behaviour that affect any individual property or transaction.