You need planning permission to put vehicular access in where it previously didnt exist. If the other houses on your street have it, then you shouldnt have any problems obtaining it. You will also need permission to alter the footpath - angling it so that a car can drive over it into your driveway. Some Councils e.g. Dublin City, will insist that they do the work and that you recoup them the cost - this is for H&S reasons as the council can be sued if the footpath is done badly and people trip etc.