Property experts are warning plans to lure post-Brexit big business to Dublin will put a strain on the housing market.
Ireland's competing to bring the European Medicines Agency and its 900 staff here.
The government's promised to give the EMA a total of €78m over ten years if it sets up in Dublin when it leaves London in 2019.
Dublin's competing against 19 other cities including Amsterdam, Barcelona, Stockholm and Warsaw.
But Savilles Ireland is warning the influx of its 900 staff would put a massive strain on the housing market.
The auctioneer's director of research, Dr John McCartney, says we have a limited amount of properties, and believes the people would otherwise be buying in Dublin will be forced to look elsewhere.
"If you look on Daft.ie today, for example, there are currently less than 1100 properties available to rent in Dublin. If we just made the very crude assumption that (the EMA staff) all came over together at the same time, that would huge dent in the available stock."
The S and P ratings agency also predicts executives relocating to Dublin will drive up house prices even further.
Several huge firms like Bank of America and JP Morgan have confirmed they'll base themselves out of Dublin after Brexit.
Barclays is the latest to commit to Ireland. It's just signed a 20 year lease on a brand new office block on Molesworth Street.