The construction of apartments for 320 student beds at The Lough was approved in August, despite fierce local opposition.
However, the developer is now looking to increase the size of the project even further, to 418 student beds — an increase of 98.
Pre-consultation has taken place between the developer, Lyonshall (Bandon Road) Ltd, and An Bord Pleanála regarding the expansion.
The move has angered the local community and Lord Mayor Mick Finn, who lives close to the site, said he would continue to fight against the proposal.
Mr Finn said he would be making a submission in opposition, as he did with the original application.
The apartments are located near the junction of Glasheen Road and Bandon Road, and the apartments would be partially visible from the nearby Lough amenity walk.
An Bord Pleanála gave the initial go-ahead to Lyonshall, after considering the report of its own planning inspector.
Residents had argued that projected 2019 demand for student accommodation, as set out in last year’s national strategy on the topic, had already been met, but the inspector said there was still a projected shortfall of 2,000 beds for students in Cork by 2024.
“We all recognise that our third-level colleges are growing and more student accommodation is needed, but it needs to be developed in a more integrated way with existing communities,” Mr Finn said.
The residential nature of the area was a strong factor in many objections, with the Lord Mayor among those who cited the four-storey height of the project as one of their concerns.