To reverse the way a door opens, we cut door hinge mortises on the opposite side of the door jamb and also cut/reverse the striker plate hole. … We filled in the holes with bondo wood filler and also painted. We asked that the customer supplied the matching paint to paint over the bondo. This before and after pic shows after the door was reversed, but before and after filling in the filling in the hinge mortises.
$400-500 labor, depending on few options.