The terms of reference of a report into allegations of conflicts of interest by the deputy chairman of An Bord Pleanála, Paul Hyde, show the probe will examine whether Mr Hyde disclosed all "assets" and "business activities" to the planning board.
Minister for Housing Darragh O'Brien published the terms of reference of the report which will be conducted by Senior Counsel Remy Farrell.
It specifies an number of planning issues: a proposed strategic housing development in the Distillery Quarter in Blackpool, Cork; a proposed development in Gilford Park, Sandymount, Dublin and proposed development in Terryland, Carrigtwohill, Cork.
The report will examine whether Mr Hyde "correctly disclosed to the board all relevant interests (including pecuniary and beneficial interests)".
It will also probe whether he had interests in any applications or planning appeals which came before An Bord Pleanála.
The terms of reference say that the report will examine whether Mr Hyde "kept the chairperson of the board promptly and fully informed of his conduct of the business of the board and of all the circumstances material to or likely to be material to the business of the board."
It will investigate whether he complied with the code of practice for the governance of State Bodies and An Bord Pleanála's code of conduct for members and employees.