Use this site to find out what other houses in the area have sold for
This will show you what planning permission others around you have gotten or applied for. It is also a good site to check if developers have any plans in your area.
Check if it has flooded or if it is a potential area with flood risk.
seai.ie
You use verify the BER cert number that you have been provided for the property you are interested in.
Check if the property is freehold or leasehold.