If you made a submission to the council on a planning application & dont like the decision, you can appeal it to an Bord Pleanala.
The important thing to remember is that planning permissions must conform with the local authorities Development Plan. If the proposed development is in accordance with the Development Plan, then it is more than likely going to get permission, regardless of who submits the application and there is very little you can do about it.
If it does not conform with the Development Plan, it should be turned down by the council. However, if the council do not reject it, an appeal to an Bord Pleanala will almost certainly succeed.