From your father's point of view, he is disposing of an asset and thus would have a CGT liability. However, if he meets the conditions
1) market value of land must not exceed € 254,000
2) child must use land to construct his/her principal private residence
then the transfer is exempted from CGT
From your point of view, you may have a Capital Acquisition Tax (CAT) liability as you will be in receipt of a gift. The liability will depend on the cumulative gifts/inheritences from your parents since 1st Dec 1999 - the threshold is around € 480,000.
If you dispose of the land without building on it or do not occupy the house for a period of 3 years, then you will be liable for CGT charge which would have arisen on the transfer from your father.