Hi Igora
I sympathise with your dilema, in the midst of an appeal to ABP at the moment ourselves. From my experience of dealing with planning matters at county council level the odds are definately stacked in favour of the developer. It is up to you to keep yourself appraised of changes to the planning application. If the cc requests a change to the plans, the applicant can furnish this information without telling you ... it is at the disgretion of the cc whether they consider this significant enough to inform third party submissions or not.
My advice to you would be to know what you want. How does the proposed building affect your property? Is it overlooking your property? Worst case senario, what would keep you happy (this could be a high boundary wall, the omission of a window etc)? Know this before you consider appealing to ABP, you may be able to negotiate with the developer in this instance.
If you do decide to go ahead, make sure you get your case filed in time. You have 4 weeks to have the appeal in the offices of ABP. Chances are the appeal will take 13-16 weeks. I wish you every success. You should consider hiring a planning consultant to assist with your appeal. You´ll find a list on:
[broken link removed] They charge about 800+euros ... including 210 to ABP ... but in my view well worth the money.
Good luck.