Its sounds like you've been issued with a Decision to Grant Permission.
The Appeal period starts on the Date of Decision and runs for four weeks (28 days) not a calender month.
Ist Parties [you] and 3rd parties can lodge and appeal within this period on payment of the appropriate fee.
To be able to Appeal 3rd parties must lodge an Observation during the 1st five weeks of planning application but there are some exceptions.
You can inform yourself about the Appeal process, dates for lodgement, who can appeal, appeal fees, previous decisions and other matters
here.
If there is an appeal, a new process commences whereby the planning application gets looked at
de novo by An Bórd Pleanála.
The initial review is by one of the Inspectors, who submits the Inspector's Report to the Bord Members for review.
The Members then decide whether or not to grant permission for
- all of the proposed development
- part of the proposed development
- add conditions varying it or limiting it
- or they may decide not to grant it at all
An appeal may be lodged on the last day of the four week period.
This period can be affected by public holidays and the Christmas period.
It may take a week or so for the Appeal to be processed and the local authority notified.
For this reason, the Local Autghority normally waits a week to allow for such notifications.
The signing of Appeal notifications or Grants of Permission may occur on the Friday following.
Because of this, the Grant of Permission seldom issues within five weeks and normally issues around six weeks after the Date of Decision if there is no Appeal.
Therefore you would be well advised not to inform anyone that you have received permission until you have the original Grant of Permission document in your hand.
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.