One in ten residential units in Qatar are likely to be empty in 2010 as supply outweighs demand in the Gulf state, a new report has said.

The study by Engel & Volkers Commercial added that with a large number of residential projects scheduled to be completed within the next year, rents were also likely to take a tumble.

The rents of commercial buildings, meanwhile, would bottom out next year, according to the survey, The Peninsula reported on Sunday.