ddmani;
No issue , just means Banks valuer says you got house at a better price than he values it at. That is nice to know.
Banks made an Art Form of (permitting) over valuation in the fluffy times but I doubt if they are up to it again.
You mention premium? If that is insurance premium , remember insurance is on replacement/ build cost not market value.
eg; If you built a house in Dublin 4 for 200,000 and it was then worth 600,000 , the insurance company would probably only pay out 200,000 on a claim.