Film director Neil Jordan is taking a planning row against his neighbour to An Bord Pleanala (ABP), for what is likely to be a final decision on the matter.
Mr Jordan and his wife, Brenda Rawn, have lodged an application with the planning board against retention permission granted to his neighbour, Robin Power, for a bathing shelter.
The focus of the ongoing dispute is an 11sqm bathing changing area, built without planning permission, on "millionaires' row" at Sorrento Terrace, in Dalkey.
Dun Laoghaire-Rathdown County Council has granted retention permission for the structure to Mr Power on two occasions, but Mr Jordan and Ms Rawn have repeatedly challenged this, including at the High Court.
Save for any further legal action, ABP is now likely to have the final say.
The film director and his wife paid the €220 fee to lodge the planning appeal, with a letter dated August 9.
In total, the appeal file was 166-pages long and was complied by Reid Associates, a development planning consultancy firm, on behalf of the couple.
An issue raised by Mr Jordan and Ms Rawn was the appointment of the same council planners to look at the retention application, after the council agreed to quash its original permission.
This decision to re-examine the file came when a judicial review was taken by Mr Jordan and Ms Rawn at the High Court.
In their appeal to ABP, the couple argued that because it was the same conservation officer who considered the file following that case, the review was not objective.
Ian Lumley of An Taisce has also previously raised concerns about the retention permission granted, and claimed the development was injurious to the architectural composition and design of Sorrento Terrace.
A decision date for the case by ABP has been set for December 12 this year.