An inspector from the board had previously recommended it should be rejected.
Bartra Property was given permission this week for a mixed scheme of three, three- storey houses, two apartments and a café along with other buildings at Bulloch Harbour in Dalkey, despite huge opposition from local residents and public representatives.
The planning board’s inspector’s report considered the scale of the project to be insufficient and would materially contravene zoning and negatively impact on the special character and amenities of the harbour area.
Local TD Richard Boyd Barrett, described the decision by An bord Pleanala as bizarre and reckless and said it overrules both the initial Dun Laoghaire Rathdown County Council refusal and its own the expert advice.
He says it also ignores the local community who want to protect the historic public harbour and will be raising the issue with the Housing Minister Eoghan Murphy.