Buying a house with planning permission discrepancies

Im buying a house with cash savings. The surveyors report says there are some minor discrepancies between the planning permission and the actual structure. The discrepancies are:

1)The permission was granted for a house 50' from the road, whereas the actual structure is 52' from the road.
2)There is a small flat roofed extension to the property containing a utility room. This was not part of the original planning permission.

Should I go ahead and purchase such property?

Is the extension visable from the front of the house / greater than 40Sm

No, its at the back and much smaller than 40sqm

probably no planning required for the extension. surveyor would be able to confirm

Re the distance from the road - could measurement be taken from centre of the road i wonder

Thanks for that info, Windup. I think the distance from road shouldnt be an insurmountable hurdle.

regarding the extension...

http://www.irishstatutebook.ie/2001/en/si/0600.html#sched2