The hospital is already set to be the most expensive health infrastructure project in the history of the State, which is being managed by Kill-based contractor BAM.
More than 6 million euro was spent in legal fees by the board of the new National Children's Hospital last year.
That's an increase of 4 million euro on the previous year, according to the Irish Times.
The hospital is already set to be the most expensive health infrastructure project in the history of the State, which is being managed by Kill-based contractor BAM.
It's due to open next July but concerns have been cast over that date.

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