Hi Jack the Lad,
To start the ball rolling you must submit a Planning Observation with five weeks from the date of lodgement.
A simple letter with the basic information contained in your Original Post [OP] above will suffice as the letter text will suffice.
This should be addressed to the Principal Officer of the Planning Department (insert name and address of the local authority).
It should state the Planning Register Reference of the proposed development, a brief description, its address and the name of the applicant and.or agent.
Don't forget to enclose the required fee of €20!
Take a deep breath, and relax, because you now have a bit of time.
This Observation will allow you to make a planning appeal within four weeks from the Date of the Decision.
You must be sure to retain the Letter of Acknowledgment the Council will send out in response to your initial Observation.
This Letter must be submitted in the original to An Bórd Pleanála in support of your Appeal - without it you cannot lodge an appeal.
In relation to the rest of your queries, you should appoint a professional without delay.
From what you have said you will need either a competent architect well-versed in planning law or a planning consultant.
This person could write the initial Observation referred to at the start of this reply, and then proceed to draft and submit your planning appeal.
This person could also advise you on the personnel you would need to assemble to comment comprehensively on the environmental impact of the scheme.
Given the scale and complexity of the issues, you may need an environmental specialist and a roads traffic consultant with a National reputation.
A firm like
Malone O'Regan consulting engineers carries both specialists in-house (no direct connection - worked with them on several housing estates all around the country)
If your appeal succeeds the other side may take a Judicial Review, and your professional may represent you at the review.
If your appeal fails to stop the development you may be the one taking the judicial review.
If matters proceed to Judicial Review you will need sound legal advice.
This suggests a solicitor and you should seek a Counsel's Opinion.
Should all this fail and planning be Granted, all is not lost.
"Coming to the nuisance" is no defence in law, and you and your near neighbours may have a good case for preventing the development going ahead.
Please follow up with any further queries you might have in this regard.
ONQ.
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All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.