Yup Ribena, Gargamel was the baddie in the Smurfs!!!
LOL, I did a Double take too.
Anyhow, there is nothing to stop you objecting to the permission application whether or not you're living there yet or not. If this new house is as important to you as i think it is, I would recommend you contact a good town planner (note town planner, not architect or engineer), I know that Michael O'Neill of O'Neill Town Planning in Howth is very good, and employ there services. If you make a good coherent objection to the planning permission application, there is nothing to say that you can't persuade them to move the development further away from your property if it is granted, or the style of the development moderated.
This might not be a bad thing, it's a pity that you are finding out at the last minute like this. But you possibly could negotiate some extra land with the developers for your own property in trade for the nuisance of the building. Be sure that you ask the council to restrict the building hours of the development. THIS IS SO IMPORTANT - you would not believe this. We bought in a new estate and there were no building restrictions and we had to put up with completely unreasonable working hours like St Stephen's Day and Sundays - incredible when they started at 8am in the morning.
Thank goodness you found out when you did. Our solicitor advised us when we bought our house to double check the planning in the area and all planning permissions to check and see what the land would be like for the next few years. Fortunately the green belt to the rear of our house will stay!
HTH