The Labour Party is "actively considering" asking the Dáil's Members' Interests Committee to examine the actions of former Minister of State Damien English.
The party believes the issue has slipped off the political agenda as a result of the Paschal Donohoe controversy.
One party TD said tonight that the social media post which Mr English published to announce his resignation "just doesn't cut it".
They added that planning issues affect thousands of people up and down the country and upholding the rules in this area is essential.
The Members' Interests Committee can investigate alleged contraventions of the Ethics Acts.
The Meath West TD resigned from his role as a Minister of State at the Department of Enterprise earlier this month after it was revealed he gave incorrect information on a planning application 14 years ago.
Mr English said that once he reviewed the application it became clear to him that he had failed to tell Meath County Council he already owned a home.
This was significant because people seeking to build a home in the county had, under planning laws, to demonstrate that they needed a house.
The story was first exposed by The Ditch website.